Skip to main content
PLOS One logoLink to PLOS One
. 2023 Feb 10;18(2):e0278181. doi: 10.1371/journal.pone.0278181

Knowledge, attitudes and practices on household solid waste management and associated factors in Gelemso town, Ethiopia

Hailu Eshete 1, Asnake Desalegn 2, Fitsum Tigu 2,*
Editor: Alison Parker3
PMCID: PMC9916587  PMID: 36763645

Abstract

Improper solid waste management in urban and semi-urban cities of developing countries is the source of environmental pollution and public health concern. This study aimed to assess the households’ knowledge, attitudes and practices of solid waste management and associated factors in Gelemso town. A community-based cross-sectional study design was used to assess the households’ KAP of SWM in Gelemso town. A systematic random sampling technique was used to recruit 390 households from Gelemso town and data was collected using a structured questionnaire. Data analysis was carried out using SPSS version 22.0 software. Bivariate and multivariate analyses were used to predict the improper SWM practices. From 390 households included in the study, 61.3% of them were females. Generally, most households had correct knowledge and positive attitudes towards SWM but poor practice was observed in the study area. About 96% of the households considered solid waste as a source of environmental pollution and close to 92% of them replied that solid waste can be used for compost preparation. Majority (87.4%) of the households “strongly agreed” about the potential risk associated with improper solid waste disposal and nearly 80% of them also “strongly agreed” that proper SWM is crucial to create a healthy environment in the community. Nearly 80% had practiced improper SWM. Logistic regression analyses indicated that lack of experience in sorting solid waste, ways of removal, knowledge about reduce, reuse and recycle, absence of adequate solid waste landfills, and lack of door-to-door waste collections services were identified as the major contributing factors for the improper SWM practice in Gelemso town. In conclusion, the majority of the households had practiced improper SWM, such as disposing of solid waste in the backyard, along the roadsides, in gully and burned. These malpractices can significantly affect the environment and public health of the residents.

1. Introduction

Solid waste is defined as unwanted and sometimes hazardous materials with low liquid content generated from municipality, industry and commerce as well as agriculture and other related sectors [1]. However, in many unindustrialized countries including Ethiopia, the main sources of solid wastes are generated from households and agriculture [2]. Solid waste management (SWM) is a complex activity that involves the collection, transportation, processing and disposal of solid wastes in a way that is best addressed for human welfare [3]. Failure of proper SWM in the urban and semi-urban areas result in proliferation of solid waste associated diseases [4] and provide suitable breeding sites for vectors like mosquitoes, flies and rodents which in turn are responsible for public health problems [5].

Proper solid waste disposal is a big challenge for most developing countries including Ethiopia. Studies indicated that, households’ perception, awareness, knowledge, attitudes, and behavior towards solid waste had significant impact on SWM [6, 7]. In addition, the disproportionate generation of solid waste and SWM systems of the municipalities become problematic for many countries [8]. Moreover, such issues are associated with various factors including lack of adequate infrastructures, lack of legal enforcement on environmental issues, irregular and unplanned dumping of solid wastes, population increase, urbanization due to rural-urban migration, insufficient capital to run SWM process and absence of new technology for waste disposal [9].

In Ethiopia over 67.4% of generated solid waste is dominated by organic biodegradable materials which can be recycled [2], however, only 5% is recycled in non-standard ways [4]. The majority of the solid waste generated by the municipality are either illegally disposed of without pre-treatment or traditionally burned in the open air [2]. Hence proper SWM requires the commitment by the municipality and ensuring active involvement of the community. Not only providing solid waste infrastructure, but also in depth understanding of the community’s perception, knowledge and behavior are quite important [10]. A study reported that, there was a gap between public perception and awareness, as it identified in the study [11]. Moreover, poor awareness and delay of collection fees payment to the micro and small enterprises (MSEs) [12, 13] and irregular solid waste collection and exclusion of poor residences in the solid waste collection systems are other factors that hindered the process of proper SWM [2]. Besides knowledge and awareness, attitude is an important element that shapes the society to understand their surroundings, keep the environment healthy and practice a proper SWM.

Various studies have been conducted in Ethiopia on assessment of factors influencing these behaviors including knowledge, attitudes and practices (KAP); however no study has been conducted in Gelemso town regarding the household KAP towards SWM. The town has limited SWM facility, most of the time the solid waste is indiscriminately disposed along roadsides and into open areas and hence the current status of the solid waste problem in the town has reached a critical stage. Thus, the aim of this cross-sectional study was to assess the households’ KAP towards SWM and the factors associated with improper SWM in the town. The findings of the current study may help the local government to fill the gap on SWM. It could also serve as baseline information for future study.

2. Methods

2.1. Description of the study area

Gelemso is one of the administrative towns in West Hararghe zone of Oromia National Regional State and the origin of Khat. It is located 376 km away from Addis Ababa, the capital city of Ethiopia and 70 km from Chiro, zonal capital city. It has a total area of 46,000 hectare and administratively divided into two Kebeles (lowest administrative units in Ethiopia). The town is largely characterized by highland climate conditions. According to the Gelemso municipal office report (2017), the total population of Gelemso is 43,837 (23,735 males and 20,102 females). The major economic activities of the town are trade (mainly of Khat), urban agriculture, micro and small-scale enterprises and other informal businesses. The town also consists of a zonal hospital, four health clinics, technical and vocational institutes, preparatory and high schools, four elementary schools and three kindergartens with several government and private sectors.

The city municipality of Gelemso has waste management section, which is responsible for waste management system of the city government. Under which one Micro and Small Enterprise (MSE), comprising of 10 members, one waste collection service vehicle and two shared containers are allocated for this purpose. The municipality has no official damping site in or around the city. Previously the collected wastes were damped to an open-pit (created during rock extraction) near the city. Recently, the collected wastes are damped to an open area in the boarder of the city. The MSE members are responsible for picking waste from home-to-home, and shared container and roadsides to the final damping site, however, the MSE collect wastes only from registered and households who are willing to pay monthly service charges. The municipality has partial subsidy to MSE. Thus, open waste damping systems are commonly practiced by the city dwellers.

2.2. Study design and sample size determination

A community-based cross-sectional study design was used to assess the households’ KAP on SWM in the Gelemso town from March to June 2020. Sample size was determined by assuming that half of the respondents had knowledge on SWM with estimated prevalence rate of 50% (p = 0.5) at 95% confidence level (Zα/2 = 1.96) and 5% of marginal error (d = 0.05) [14]. Based on the formula, 422 participants were involved including the 10% non-response rate. The researcher obtained total list of names and number of households (5144) from Gelemso municipality office. Since sample size to study population is greater than 0.05, the correction formula of (n/1+n/N) was used to determine the final sample size, 396 (422/1+422/5144) plus 1.5% non-response rate. Next to this, the value of k was calculated by 5144/396 = 13 which is approximately 13. Finally, a systematic random sampling technique was used to select households from the two Kebeles. Then the first household was located by lottery method and the next household was selected by every 13th (kth) from the total lists of the households. Furthermore, two Kebele leaders, two municipality officials and six members from MSE were purposely included in the study.

2.3. Operational definition

Improper solid waste management: is defined as a kind of illegal solid waste management practice in which the unsorted solid wastes and/or the generated household solid wastes were damping at legally unauthorized place; Landfill: is a facility designed by the municipality for the solid wastes disposal.

2.4. Data collection

2.4.1. KAP survey

Participatory mixed approaches (both qualitative and quantitative procedures) were used to collect data from the households. Quantitative data were collected through interview using a structured pretested questionnaire. The questionnaire consists of both open and closed ended questions about socio-demographics, households’ knowledge, attitudes and practices towards SWM. The questionnaire was adopted from different guidelines and published articles with some modification [8, 15, 16]. First, the questionnaire was prepared in English and translated to Afan Oromo (local language). Field observation was conducted in order to understand the actual households’ practice towards SWM such as open dumping sites in river sides, valley, road, and waste collection and transportation systems as well as waste disposal facilities in the town. Photographs showing the solid waste management practices and disposal sites in the community were taken by the principal investigator during the field visit.

2.4.2. Key informant interview

A total of 10 key informants consisting of two Kebele leaders, two municipal office experts and six members of MSEs were interviewed for the validation of the interviewee responses in the town.

2.4.3. Focus group discussion

A group of 10–12 participants were drawn for focus group discussions (FGDs) among the elderly and local community representatives in Gelemso town to understand the KAP responses of the community towards SWM. A total of two focus group discussions were conducted in each Kebele during March and May 2020, respectively.

2.5. Data analysis

Completeness and consistency of the data were checked and double entered into SPSS version 22.0 software. Descriptive statistics were done to summarize the socio-demographics and KAP data. Bivariate analysis was used to determine the association between the dependent and independent variables. Logistic regression analysis was used to determine the best predictors of improper solid waste management practices.

2.6. Ethical statement

Ethical approval was obtained from Addis Ababa University, College of Natural and Computational Sciences, Institutional Review Board (CNCS-IRB) with reference number: IRB/040/2020. Before data collection, all study participants were informed about the purpose of the study and the rights to participate or decline to participate in the study. The respondents were also informed about the confidentiality of their information and assured that all the data will be used for research purposes. Additionally, before collecting the data through the interview, all participants signed a written consent form. The study included adult participants of age ≥ 18 years old.

3. Results

3.1. Socio-demographic characteristics

A total of 390 households (61.3% female and 38.7% male) were involved in the study with a response rate of 98.5%. Among which 66.9% lived in the city over 10 years. Close to 50% of the participants earned an average monthly income of 75 USD and over 60% of the participants were self-employed (Table 1).

Table 1. Socio-demographic characteristic of the respondents.

Variable Category Frequency (%)
Kebele 01 231 (59.2)
02 159 (40.8)
Sex Male 151 (38.7)
Female 239 (61.3)
Age (year) 18–30 87 (22.3)
31–45 180 (46.2)
46–60 103 (26.4)
> 60 20 (5.1)
Education level No education 45 (11.5)
Primary school 102 (26.2)
Secondary school 90 (23.1)
Diploma 86 (22.0)
Bachelor’ degree & above 67 (17.2)
Residence period (year) < 2 26 (6.7)
2–5 56 (14.4)
6–10 47 (12.1)
> 10 261 (66.9)
Family size 1–3 121 (31.0)
4–6 167 (42.8)
7–9 75 (19.2)
> 10 27 (6.9)
Monthly income (USD) < 35 67 (17.1)
35–115 186 (47.7)
> 115 137 (35.1)
Occupation Self-employed 235 (60.3)
Government employed 113 (29.0)
Company employed 32 (8.2)
Others 10 (2.6)

3.2. Households’ knowledge and attitudes towards SWM

About 96% of the households gave the correct response regarding solid waste as sources of pollutant for the environment and 88.2% of them were associated with diarrhea, typhoid, and cholera (Table 2). Similarly, 78.2% of the household knew the recyclable items from the solid waste and almost similar figure of household sorted and sold these items to recycling companies. Over 87% of the household claimed that burning solid wastes causes health risks to the community. Nearly 90% of the respondents also knew that improper solid waste can eventually lead to pollution of rivers, lakes and wells. Likewise, close to 92% of the household also believed that solid wastes can be used for compost preparation. A relatively less knowledge related response of (60.8%) was recorded on how the solid waste had been used for making wealth in a household.

Table 2. Households`response to knowledge questions on SWM.

Knowledge question Frequency (%)
Yes No
Is solid waste source of pollution for the environment? 373 (95.6) 17 (4.4)
Burning of solid wastes causes health risks (eg. bronchitis and asthma) 339 (86.9) 51 (13.1)
Waste papers, plastic bags, a piece of metal, wood and cloths are recyclable? 305 (78.2) 85 (21.8)
Do you consider solid waste as a wealth? 237 (60.8) 153 (39.2)
Can solid waste be sorted and sold for recycling companies. 310 (79.5) 80 (20.5)
Compost or organic fertilizer can be prepared from solid waste? 358 (91.8) 32 (8.2)
The amount of solid waste can be reduced by reusing at household level. 332 (85.1) 58 (14.9)
Illegal damping of solid waste causes diarrhea, typhoid, and cholera. 344 (88.2) 46 (11.8)
Sorting of solid waste at home level helps for SWM. 287 (73.6) 103 (26.4)
Improper dumping of solid wastes can eventually lead to pollution of rivers, lakes and wells. 350 (89.7) 40 (10.3)

The households’ attitudes towards the SWM among the Gelemso community were assessed and summarized in Table 3. The result indicated that the majority (87.4%) of the households “strongly agreed” that solid waste is one of the environmental problems of the city which required an immediate attention by the city government. Over 70% of them accepted the principle that solid waste can be reduced, reused and recycled. About 79% of households “strongly agreed” that proper SWM is important to create a healthy environment among the community. However, most households pointed out that the city government did not create enough awareness on SWM and control on illegal solid waste disposal in the city. Likewise, about 68% of the households “strongly agreed” that SWM was a burning issue in the town. Slightly over 62% and 28.5% of the households “strongly agreed” and “agreed” that proper solid waste collection and disposal was the responsibility of every household, respectively. Over half (54.4%) of the households “strongly agreed” and 29.2% of them “agreed” that selling plastic waste for recycling is the best way to manage solid wastes.

Table 3. Households`attitudes towards SWM.

Attitude question Frequency (%)
Strongly agree Agree Disagree Strongly disagree
Solid waste is anything without value 41 (10.5) 71 (18.2) 102 (26.2) 176 (45.1)
Solid waste is one of the environmental problems that need an immediate attention 341 (87.4) 24 (6.2) 19 (4.9) 6 (1.5)
Solid wastes can be reduced, reused and recycled (3Rs) 274 (70.3) 57 (14.6) 52 (13.3) 7 (1.8)
Every household should have responsibility for the proper collection and disposal of solid wastes 242 (62.1) 111 (28.5) 26 (6.7) 11 (2.8)
Proper solid waste disposal is the responsibility of everyone 210 (53.8) 136 (34.9) 33 (8.5) 11 (2.8)
Proper SWM is important for creating healthy environment 307 (78.7) 50 (12.8) 22 (5.6) 11 (2.8)
SWM is a burning issue in the town 266 (68.2) 74 (19.0) 26 (6.7) 24 (6.2)
The city government should conduct regular supervision and control on illegal dumping of solid waste in the town 21 (5.4) 44 (11.3) 226 (57.9) 99 (25.4)
Selling plastic waste for recycling is the best way to manage solid wastes 212 (54.4) 114 (29.2) 49 (12.6) 15 (3.8)

3.3. Solid waste removal methods

Slightly over 45% of the households separated their solid waste at household level before disposal. However, the majority (79.4%) of the households disposed of their solid waste illegally, either in the backyard with sacs (57.9%) or along the roadsides and in gully (21.5) (Table 4). More than half (57.4%) of the households had practiced 3Rs strategies (Fig 1) and the remaining households (42.6%) burned the solid waste in their compound as indicated in Table 4.

Table 4. Households’ practices on SWM.

Practice question Frequency (%)
Do you separate solid wastes before disposal?
    Yes 178 (45.6)
    No 212 (54.4)
How do you get rid of solid wastes from home?
    Dumped in the backyard with sacs 226 (57.9)
    Dumped along roadsides or in gully 84 (21.5)
    Dumped in disposal site 31 (7.9)
    Buried in the soil 49 (12.6)
Do you practice reduce, reuse and recycle strategy for SW or not use 3R?
    Reduce by compost preparation (R-1) 43 (11.0)
    Reuse (R-2) 107 (27.4)
    Selling for recycling business (Korale and Lewache*) (3R) 74 (19.0)
    Burn (Not use 3R) 166 (42.6)
Are there adequate solid waste landfills or dumping sites in the town?
    Yes 42 (10.8)
    No 348 (89.2)
Do you have access to door-to-door waste collection service?
    Yes 117 (30.0)
    No 273 (70.0)
How do you transport solid waste to the nearby container?
    By household members 70 (17.9)
    By MSE with fair payment 70 (17.9)
    By private waste collectors 198 (50.8)
    Other means 52 (13.3)

* Korale: informal waste collectors mainly collect recyclable materials (plastics, glasses, corrugated iron sheets, tins and car batteries) from door-to-door, in the streets, scavengers on the dumpsite, wholesalers and waste resellers. * Lewache: informal waste exchangers, they collect certain waste (textiles and shoes etc…) from door to door in exchange with new plastic containers, sauce pans, spoons, and other household items. Both Korale and Lewache are selling their collected waste to middlemen, who in turn sell them to brokers of recycling companies.

Fig 1. Collection of solid wastes by Korale and Lewache for recycling (Source: Field observation by researcher).

Fig 1

Left to right: plastics, beverage cans, glass and bottles; metals, corrugated iron sheets; and textiles and shoes.

The majority (89.2%) of the households reported the absence of adequate solid waste landfills or damping sites in the city and thus had practiced an improper SWM (Table 4). As indicated in Fig 2, slightly over 82% of the households mentioned that the current status of solid waste has increased from time to time in terms of volume as well as compositions in the city. Besides the absence of solid waste landfills, 70% of the households have no access to door-to-door solid waste collection services as mentioned in Table 4 and over 60% of the interviewed households and key informants reported the poor solid waste collection and disposal service of the city government (Fig 3). Mainly solid waste is transported to the nearest container by private waste collectors, which account about 51%, and followed by household members and MSE.

Fig 2. Multiple responses of households showing the current status of solid waste volume and composition in Gelemso town.

Fig 2

Fig 3. Household responses towards city government solid waste collection and disposal services.

Fig 3

3.4. Factors affecting proper SWM in Gelemso town

In order to determine factors contributing to improper SWM, independent variables having p-value < 0.05 in bivariate analysis was used for fitting the logistic regression model. Table 5 indicated that those households who had no experience of sorting solid waste, lacking the right solid waste disposal method and fundamental principles of 3R were more likely to practice improper SWM than those who had the required experience, method and principles of SWM. Similarly, households who had no access to solid waste landfills, and door-to-door waste collection services were more likely to practice improper SWM than those who had the services with AOR = 0.084, 95% CI = 0.024–0.296, p < 0.001 and AOR = 0.105, 95% CI = 0.039–0.283, p < 0.001, respectively.

Table 5. Bivariate and multivariate analyses of factors associated with SWM practice in Gelemso town.

Variables SWM Practice OR (95% CI) P value
Category No % COR AOR 95% CI
Experience of sorting solid waste before disposal Yes 178 45.3 1 1
No 212 54.4 0.099 0.077 0.023 0.261 < 0.01
Methods for get rid of solid waste from home Yes 80 20.5 1 1
No 310 79.5 0.163 0.142 0.063 0.323 < 0.01
Knowledge about the 3R strategy Yes 224 57.4 1 1
No 166 42.6 0.126 0.217 0.061 0.775 0.019
Having adequate solid waste landfills/dumping sites Yes 42 10.8 1 1
No 348 89.2 0.161 0.084 0.024 0.296 < 0.001
Having access to door-to-door waste collection service Yes 117 30.0 1 1
No 273 70.0 0.146 0.105 0.039 0.283 < 0.001

4. Discussion

Various studies indicated that demographic characteristics of the household comprising sex, age, level of education, family size, income and occupation are important variables to understand the KAP of SWM [17, 18]. In this study, most of the household had 4–6 persons and earning less than 50 USD per month. In the study of Limon and Villarino, 2020 [16], which was conducted on KAP of food waste, family size and income of the household, were identified as the significant factors for the disposals of food waste. Most households had an age group of 31–45 years old, they had a family with 4 to 6 members and over 60% of them were women. This observation was in line with the studies conducted in elsewhere [16, 19]. The variations in the demographic characteristics of the households could be due to the socioeconomic and cultural differences among different settings.

The finding of this research indicated that households had a high level of knowledge on solid waste, and SWM as well as positive attitudes towards SWM. However, most of the households had practiced improper solid waste disposal. Likewise, Lema et al. [5] also reported that over 83% of the Asella town in Ethiopia had the same improper solid waste disposal system. This might be associated with the absence of landfill and door-to-door waste collection services in the two places. Logistic regression analysis showed that there are statistically significant differences among households who had access to solid waste landfills and door-to-door waste collection services than those who had no services (p < 0.05).

The present study showed that about 90% of the households correctly understood the adverse effects of improper solid waste disposal on the environment. Based on their understanding, solid wastes were the sources of contaminants for the environment which leads to pollution of rivers, lakes and wells; it can be the sources of various diseases such as bronchitis, asthma, diarrhea, typhoid, cholera and other vector borne illness to humans. A study in Swaziland indicated that people who are living very close to the damping site are victims of malaria, chest pains, cholera, and diarrhea [4].

On the other hand, the households’ awareness about the usefulness of the solid waste for making wealth via applying the 3Rs strategies (reduced, reused and recycled), and making compost as fertilizers were as high as 80%. This research finding is relatively comparable with the study reported in Zimbabwe [20], much higher than the research findings in Ethiopia [21] and other studies conducted elsewhere in the world [15, 22, 23]. Differences in the knowledge level of the respondents can be due to educational status, nature of solid waste, infrastructure conditions and the awareness levels across the studies.

In terms of attitudes toward SWM, higher levels of positive attitudes were observed among the Gelemso community. Accordingly, most of the households strongly agreed that solid waste is a source of contaminant for the environment that required immediate attention by the local government. Furthermore, the households had perceived a positive attitude to proper solid waste disposal; they also accepted the principles of 3R for the creation of a healthy environment for the society. This finding is in agreement with the previous studies conducted elsewhere [20, 22]. The positive attitude toward proper solid waste removal might be a good opportunity to avoid the adverse effects of solid waste in the environment and huge potential for the creation of jobs in the SWM systems such as micro-enterprise waste collection services, composting and other waste recycling activities.

Solid waste disposal is the major problem of most developing countries including Ethiopia. In this study, close to 80% of the households were disposed of their solid waste in illegal ways (backyard, along the roadsides, in gully and burned). Although the degree of which differs from place to place, improper solid waste disposal is a common challenge of most cities in Ethiopia [4, 8, 24, 25] and also other African countries [6, 2628]. The current study revealed that those households who had no experience of sorting solid waste, lacks the right ways of solid waste removal and those households who did not practice 3Rs strategies were identified as the major contributing factors for improper disposal of solid waste at Gelemso city. Furthermore, the high improper solid waste disposal practices in this particular study may be associated with the absence of adequate solid waste landfills, damping sites and lack of access to door-to-door solid waste collection services in the city as ascertained from the respondents and direct field observation. Logistic regression analysis also revealed a direct association between improper SWM and lack of access to solid waste landfills and/or door-to-door waste collection services.

Higher illegal solid waste disposal was reported in this study, 79.5%, compared to other studies conducted in Ethiopia such Addis Ababa, 25% [29], Adama, 38% [30], Gondar, 69.7% [24], Bahir Dar and Debre Berhan, nearly 75% [25, 31]. And also from other African countries like Accra, Ghana, 39% [32], Kampala, Uganda, 59% [33], Owerri, Nigeria, 66.3% [34], and Keko Machungwa, Tanzania, 71.5% [28]. Possibly these variations can be explained by differences in infrastructure, urbanization, community level of understanding and intervention measures among others.

Besides inadequate door-to-door solid waste collection service, households’ experience of solid waste separation, reduction, reuse and recycling were unsatisfactory. As logistic regression analysis indicated households who had no experience in sorting solid waste at household level had practiced improper SWM than those who had the experience (AOR = 0.077, 95% CI = 0.023–0.261, p < 0.01). Similarly, there was statistically significant (p = 0.019) variation in SWM practice between households who applied the 3R strategy and those who did not. In the present study 55% of the households did not separate solid waste prior to land filling, which is much lower than the study conducted in Ghana, 82.7% [32], Uganda, 78.7% [33] and Iran, over 80% [22].

In Ethiopia, recycling of solid waste is mainly conducted by informal sectors and not well practiced by most regions. Various factors are associated with it such as inefficient organizational structure, absence of clear policy and regulation are among others [2]. In our study, very few households recycled their solid waste through Korale and Lewache [35, 36]. On the other hand, the majority of the solid waste that was generated in Gelemso town are biodegradable, only insignificant amounts of which are recycled through informal institutions [2]. Thus, launching of formal institutions to recycle and manage the solid wastes that are generated in every household is expected from the Gelemso municipality office.

5. Conclusion

The finding of this study indicated that the households’ knowledge and attitudes on solid waste and SWM is high but the level of practice is very poor. Most households disposed of their solid waste either in the backyard with sacs or along the roadsides, in gully and burned in open air. Lack of experience in sorting solid waste, removal methods, knowledge about 3R, absence of adequate solid waste landfills, and lack of door-to-door waste collections services were the major contributing factors for the improper SWM practice in Gelemso. This can significantly affect the environment and public health of residents. Therefore, proper SWM should be advocated by the local government, and other stakeholders to keep the environment healthy for the local people. Furthermore, the municipality of Gelemso town needs to improve the SWM systems of the town through construction of adequate solid waste landfills, shared containers and door-to-door solid waste collection services to the residents of Gelemso.

Supporting information

S1 File. Survey questionnaire (English version).

(DOCX)

S2 File

(PDF)

Acknowledgments

Authors gratefully acknowledge Addis Ababa University, School of Graduate Program for the provision of technical and administrative support to this project. Authors are also thankful to study participants, Gelemso Municipality Office, the elderly and local community representatives of Gelemso town for their valuable information and support.

Data Availability

All relevant data are within the paper and its Supporting Information files.

Funding Statement

HE is an MSc student of Addis Ababa University (AAU), College of Natural and Computational Sciences. He obtained student financial support for the completion of MSc thesis from Graduate Programs of AAU. The support is only for data collection and processing. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

References

  • 1.Nations U. Glossary of Environment Statistics, Studies in Methods. In: Analysis DoEaSIaP, editor. UN. Statistics Division, New York;1997.pp 83. [Google Scholar]
  • 2.Teshome FB. Municipal solid waste management in Ethiopia; the gaps and ways for improvement. J Mater Cycles Waste Manag. 2021;23:18–31. [Google Scholar]
  • 3.Schubeler P, Christen J, Wehrle K. Conceptual framework for municipal solid waste management in low-income countries. SKAT (Swiss Center for Development Cooperation) St. Gallen. August,1996. [Cited 2022 March 21]. Available from: https://documents1.worldbank.org/curated/en/829601468315304079/pdf/400960Municpal1te0framework01PUBLIC.pdf [Google Scholar]
  • 4.Mohammed A, Elias E. Domestic solid waste management and its environmental impacts in Addis Ababa city. JEWM. 2017; 4: 194–203. [Google Scholar]
  • 5.Abul S. Environmental and health impact of solid waste disposal at Mangwaneni dumpsite in Manzini: J. sustain. dev. Afr. 2010; 12: 64–78. [Google Scholar]
  • 6.Rousta K, Zisen L, Hellwig C. Household Waste Sorting Participation in Developing Countries-A Meta-Analysis. Recycling. 2020; 5: 1–26. [Google Scholar]
  • 7.Manun’Ebo MF, Ndombe DM. Household waste storage and waste disposal: factors associated to safe practices in Ndanu Locality in Kinshasa, Democratic Republic of the Congo.IJES. 2020; 9:7–12. [Google Scholar]
  • 8.Lema G, Mesfun MG, Eshete A, Abdeta G. Assessment of status of solid waste management in Asella town, Ethiopia. BMC public health. 2019;19: 1–7. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 9.Momodu NS, Dimuna KO, Dimuna JE. Mitigating the impact of solid wastes in urban centres in Nigeria. J Hum Ecol. 2011;34: 125–133. [Google Scholar]
  • 10.Babaei AA, Alavi N, Goudarzi G, Teymouri P, Ahmadi K, et al. Household recycling knowledge, attitudes and practices towards solid waste management. Resour. Conserv. Recycl. 2020; 102: 94–100. [Google Scholar]
  • 11.Masud MM, Akhtar R, Afroz R, Al-Amin AQ, Kari FB. Pro-environmental behavior and public understanding of climate change. Mitig. Adapt. Strateg. Glob. Chang. 2015; 20: 591–600. [Google Scholar]
  • 12.Kassim SM, Ali M. Solid waste collection by the private sector: Households’ perspective-Findings from a study in Dar es Salaam city, Tanzania. Habitat Int. 2006; 30: 769–780. [Google Scholar]
  • 13.Kassim S, Ali M. Private solid waste collection services, Dar es Salaam, Tanzania. 29th International Conference: Towards the millennium development goals, Loughborough University. 2003 Jan 01[Cited 2022 Feb 16]. Avaialble from: https://repository.lboro.ac.uk/articles/conference_contribution/Private_solid_waste_collection_services_Dar_es_Salaam_Tanzania/9596303
  • 14.Charan J, Biswas T. How to calculate sample size for different study designs in medical research? Indian J Psychol Med. 2013; 35: 121–6. doi: 10.4103/0253-7176.116232 [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 15.Laor P, Suma Y, Keawdounglek V, Hongtong A, Apidechkul T, et al. Knowledge, attitude and practice of municipal solid waste management among highland residents in Northern Thailand. J Health Res. 2018;32: 123–131. [Google Scholar]
  • 16.Limon M, Villarino C. Knowledge, attitudes and practices on household food waste: Bases for formulation of a recycling system. Glob J Environ Sci Manag. 2020; 6: 323–340. [Google Scholar]
  • 17.Castagna A, Casagranda M, Zeni A, Girelli E, Rada EC, et al. 3R’S from citizens point of view and their proposal from a case-study. U.P.B. Sci. Bull. 2013; 75: 253–264. [Google Scholar]
  • 18.Chu Z, Wang W, Wang B, Zhuang J. Research on factors influencing municipal household solid waste separate collection: Bayesian belief networks. Sustain. 2016; 8: 152. [Google Scholar]
  • 19.Barloa EP, Lapie LP, de la Cruz CPP. Knowledge, attitudes, and practices on solid waste management among undergraduate students in a Philippine State University. Journal of Environment and Earth Science. 2016; 6: 146–153. [Google Scholar]
  • 20.Zambezi FM, Muisa-Zikali N, Utete B. Effectiveness of community participation as anti-litter monitors in solid waste management in metropolitan areas in a developing country. Environ Dev Sustain. 2021; 23: 747–764. [Google Scholar]
  • 21.Gebremedhin F, Debere MK, Kumie A, Tirfe ZM, Alamdo AG. Assessment of knowledge, attitude and practices among solid waste collectors in Lideta Sub-city on prevention of occupational health hazards, Addis Ababa, Ethiopia. J Public Health. 2016; 4: 49–56. [Google Scholar]
  • 22.Almasi A, Mohammadi M, Azizi A, Berizi Z, Shamsi K, et al. Assessing the knowledge, attitude and practice of the kermanshahi women towards reducing, recycling and reusing of municipal solid waste. Resour Conserv Recycl. 2019; 141: 329–338. [Google Scholar]
  • 23.Shahzadi A, Hussain M, Afzal M, Gilani SA. Determination the level of knowledge, attitude, and practices regarding household waste disposal among people in rural community of Lahore. Int J of soc sci manag. 2018; 5: 219–224. [Google Scholar]
  • 24.Gedefaw M. Assessing the current status of solid waste management of Gondar town, Ethiopia. Int J Sci Technol Res. 2015; 4: 28–36. [Google Scholar]
  • 25.Tyagi V, Fantaw S, Sharma H. Municipal solid waste management in Debre Berhan City of Ethiopia. J Environ Earth Sci. 2014; 4: 98–103. [Google Scholar]
  • 26.Bundhoo ZM. Solid waste management in least developed countries: current status and challenges faced. J. Mater Cycles Waste Manag. 2018; 20: 1867–1877. [Google Scholar]
  • 27.Oteng-Ababio M, Arguello JEM, Gabbay O. Solid waste management in African cities: Sorting the facts from the fads in Accra, Ghana. Habitat Int. 2013; 39: 96–104. [Google Scholar]
  • 28.Kasala SE. Critical analysis of the challenges of solid waste management initiatives in Keko Machungwa informal settlement, Dar Es Salaam. J Environ Prot Sci. 2014; 5: 1064. [Google Scholar]
  • 29.Regassa N, Sundaraa RD, Seboka BB. Challenges and opportunities in municipal solid waste management: The case of Addis Ababa city, central Ethiopia. J Hum Ecol. 2011; 33: 179–190. [Google Scholar]
  • 30.Hailemariam M, Ajeme A. Solid waste management in Adama, Ethiopia: Aspects and challenges. International Journal of Environmental, Chemical, Ecological, Geological and Geophysical Engineering. 2014; 8: 670–676. [Google Scholar]
  • 31.Kassie KE. The problem of solid waste management and people awareness on appropriate solid waste disposal in Bahir Dar City: Amhara region, Ethiopia. ISABB J Health Environ sci. 2016; 3: 1–8. [Google Scholar]
  • 32.Adogu POU, Uwakwe KA, Egenti NB, Okwuoha A, Nkwocha IB. Assessment of waste management practices among residents of Owerri Municipal Imo State Nigeria. J Environ Prot. 2015; 6: 446–456. [Google Scholar]
  • 33.Ssemugabo C, Wafula ST, Lubega GB, Ndejjo R, Osuret J, et al. Status of Household Solid Waste Management and Associated Factors in a Slum Community in Kampala, Uganda. J Environ Public Health. 2020. Mayy 6. ID 6807630. doi: 10.1155/2020/6807630 [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 34.Adogu POU, Uwakwe KA, Egenti NB, Okwuoha A, Nkwocha IB. Assessment of waste management practices among residents of Owerri Municipal Imo State Nigeria. J. Environ. Prot. 2015; 6: 446. [Google Scholar]
  • 35.Pierrat A, Guitton S, Ayerbe D. «Clean and green Addis Ababa». A new environmental Policy for Addis Ababa. Annales d’Ethiopie. 2012; 27: 331–333. [Google Scholar]
  • 36.Lohri CR, Camenzind EJ, Zurbrügg C. Financial sustainability in municipal solid waste management–Costs and revenues in Bahir Dar, Ethiopia. Waste manag. 2014; 34: 542–552. doi: 10.1016/j.wasman.2013.10.014 [DOI] [PubMed] [Google Scholar]

Decision Letter 0

Saqib Bashir

4 Apr 2022

PONE-D-22-02551Assessment of household experience of solid waste management in Gelemso town, EthiopiaPLOS ONE

Dear Dr. Yifat,

Thank you for submitting your manuscript to PLOS ONE. After careful consideration, we feel that it has merit but does not fully meet PLOS ONE’s publication criteria as it currently stands. Therefore, we invite you to submit a revised version of the manuscript that addresses the points raised during the review process.

Please submit your revised manuscript by May 19 2022 11:59PM. If you will need more time than this to complete your revisions, please reply to this message or contact the journal office at plosone@plos.org. When you're ready to submit your revision, log on to https://www.editorialmanager.com/pone/ and select the 'Submissions Needing Revision' folder to locate your manuscript file.

Please include the following items when submitting your revised manuscript:

  • A rebuttal letter that responds to each point raised by the academic editor and reviewer(s). You should upload this letter as a separate file labeled 'Response to Reviewers'.

  • A marked-up copy of your manuscript that highlights changes made to the original version. You should upload this as a separate file labeled 'Revised Manuscript with Track Changes'.

  • An unmarked version of your revised paper without tracked changes. You should upload this as a separate file labeled 'Manuscript'.

If you would like to make changes to your financial disclosure, please include your updated statement in your cover letter. Guidelines for resubmitting your figure files are available below the reviewer comments at the end of this letter.

If applicable, we recommend that you deposit your laboratory protocols in protocols.io to enhance the reproducibility of your results. Protocols.io assigns your protocol its own identifier (DOI) so that it can be cited independently in the future. For instructions see: https://journals.plos.org/plosone/s/submission-guidelines#loc-laboratory-protocols. Additionally, PLOS ONE offers an option for publishing peer-reviewed Lab Protocol articles, which describe protocols hosted on protocols.io. Read more information on sharing protocols at https://plos.org/protocols?utm_medium=editorial-email&utm_source=authorletters&utm_campaign=protocols.

We look forward to receiving your revised manuscript.

Kind regards,

Saqib Bashir

Academic Editor

PLOS ONE

Journal Requirements:

When submitting your revision, we need you to address these additional requirements.

1. Please ensure that your manuscript meets PLOS ONE's style requirements, including those for file naming. The PLOS ONE style templates can be found at

https://journals.plos.org/plosone/s/file?id=wjVg/PLOSOne_formatting_sample_main_body.pdf and

https://journals.plos.org/plosone/s/file?id=ba62/PLOSOne_formatting_sample_title_authors_affiliations.pdf

2. Please provide additional details regarding participant consent. In the ethics statement in the Methods and online submission information, please ensure that you have specified what type you obtained (for instance, written or verbal, and if verbal, how it was documented and witnessed). If your study included minors, state whether you obtained consent from parents or guardians. If the need for consent was waived by the ethics committee, please include this information.

Once you have amended this/these statement(s) in the Methods section of the manuscript, please add the same text to the “Ethics Statement” field of the submission form (via “Edit Submission”).

For additional information about PLOS ONE ethical requirements for human subjects research, please refer to http://journals.plos.org/plosone/s/submission-guidelines#loc-human-subjects-research.

3. We note that the grant information you provided in the ‘Funding Information’ and ‘Financial Disclosure’ sections do not match.

When you resubmit, please ensure that you provide the correct grant numbers for the awards you received for your study in the ‘Funding Information’ section.

4. We note that you have indicated that data from this study are available upon request. PLOS only allows data to be available upon request if there are legal or ethical restrictions on sharing data publicly. For more information on unacceptable data access restrictions, please see http://journals.plos.org/plosone/s/data-availability#loc-unacceptable-data-access-restrictions.

In your revised cover letter, please address the following prompts:

a) If there are ethical or legal restrictions on sharing a de-identified data set, please explain them in detail (e.g., data contain potentially sensitive information, data are owned by a third-party organization, etc.) and who has imposed them (e.g., an ethics committee). Please also provide contact information for a data access committee, ethics committee, or other institutional body to which data requests may be sent.

b) If there are no restrictions, please upload the minimal anonymized data set necessary to replicate your study findings as either Supporting Information files or to a stable, public repository and provide us with the relevant URLs, DOIs, or accession numbers. For a list of acceptable repositories, please see http://journals.plos.org/plosone/s/data-availability#loc-recommended-repositories.

We will update your Data Availability statement on your behalf to reflect the information you provide.

[Note: HTML markup is below. Please do not edit.]

Reviewers' comments:

Reviewer's Responses to Questions

Comments to the Author

1. Is the manuscript technically sound, and do the data support the conclusions?

The manuscript must describe a technically sound piece of scientific research with data that supports the conclusions. Experiments must have been conducted rigorously, with appropriate controls, replication, and sample sizes. The conclusions must be drawn appropriately based on the data presented.

Reviewer #1: Partly

**********

2. Has the statistical analysis been performed appropriately and rigorously?

Reviewer #1: Yes

**********

3. Have the authors made all data underlying the findings in their manuscript fully available?

The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception (please refer to the Data Availability Statement in the manuscript PDF file). The data should be provided as part of the manuscript or its supporting information, or deposited to a public repository. For example, in addition to summary statistics, the data points behind means, medians and variance measures should be available. If there are restrictions on publicly sharing data—e.g. participant privacy or use of data from a third party—those must be specified.

Reviewer #1: Yes

**********

4. Is the manuscript presented in an intelligible fashion and written in standard English?

PLOS ONE does not copyedit accepted manuscripts, so the language in submitted articles must be clear, correct, and unambiguous. Any typographical or grammatical errors should be corrected at revision, so please note any specific errors here.

Reviewer #1: Yes

**********

5. Review Comments to the Author

Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters)

Reviewer #1: Title does not look meaningful and attractive. It may be changed and result oriented.

Write up is very poor (view comment in attachment). Material and method section should be improved accordingly. Results do not support the title. Interpretation of results is not clear. Discussion section must be re-written before re-submission.

Conclusion section must be linked with the quantified results. General statements commonly mislead the readers.

Over all, manuscript is properly managed. English language may be improved. There are lot of language and grammar mistakes.

**********

6. PLOS authors have the option to publish the peer review history of their article (what does this mean?). If published, this will include your full peer review and any attached files.

If you choose “no”, your identity will remain anonymous but your review may still be made public.

Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy.

Reviewer #1: No

[NOTE: If reviewer comments were submitted as an attachment file, they will be attached to this email and accessible via the submission site. Please log into your account, locate the manuscript record, and check for the action link "View Attachments". If this link does not appear, there are no attachment files.]

While revising your submission, please upload your figure files to the Preflight Analysis and Conversion Engine (PACE) digital diagnostic tool, https://pacev2.apexcovantage.com/. PACE helps ensure that figures meet PLOS requirements. To use PACE, you must first register as a user. Registration is free. Then, login and navigate to the UPLOAD tab, where you will find detailed instructions on how to use the tool. If you encounter any issues or have any questions when using PACE, please email PLOS at figures@plos.org. Please note that Supporting Information files do not need this step.

PLoS One. 2023 Feb 10;18(2):e0278181. doi: 10.1371/journal.pone.0278181.r002

Author response to Decision Letter 0


18 May 2022

06 May 2022

We gratefully acknowledged the academic editor and reviewer for their valuable comments to our manuscript. The following are point-by-point responses to the academic editor and reviewer comments for the manuscript number: PONE-D-22-02551.

Reviewer #1:

Q#1: Title does not look meaningful and attractive. It may be changed and result oriented.

Answer: Modified as ‘Knowledge, attitude and practice on household solid waste management in Gelemso town, Ethiopia’.

Q#2: Write up is very poor (view comment in attachment).

Answer: We thank the reviewer for valuable comments. We have made significant improvement on the write up of the manuscript according to the comments. The revised parts are indicated in the track change form.

NB: We confirm that there is no attached documents/comments with the editorial manager website/by email. Thus, we have done the correction by ourselves.

Q#3: Material and method section should be improved accordingly.

Answer: Again we appreciate the reviewer for valuable points. We had addressed the issue properly and indicated in track change form.

Q#4: Results do not support the title. Interpretation of results is not clear.

Answer: The authors also acknowledged the reviewer for critical observation. Following the comments, we have corrected the points which are not clear for the readers, some points lacking the right interpretations are corrected. By now you will find it clear and legible. Again the corrections are indicated in revised manuscript with track change.

Q#5: Discussion section must be re-written before re-submission.

Answer: We found points which are really required clarification, thus we have done the revisions properly. Plus to this, we made a general revision to the discussion section and all the mistakes and unclear parts are significantly improved and the changes are indicated by track change form.

Q6#. Conclusion section must be linked with the quantified results. General statements commonly mislead the readers.

Answer: Thank you very much for the comment raised by the reviewer. We have carefully corrected. The corrected points are indicated in the marked version with track change.

Q7#. English language may be improved. There are lot of language and grammar mistakes.

Answer: Thank you very much for the comment raised by the reviewer. We have thoroughly corrected the English issues of the manuscript and significantly improved the manuscript content accordingly. The corrected points are indicated in the marked version with track change.

Attachment

Submitted filename: Response to reviewers.doc

Decision Letter 1

Alison Parker

7 Oct 2022

PONE-D-22-02551R1Knowledge, attitude and practice on household solid waste management in Gelemso town, EthiopiaPLOS ONE

Dear Dr. Yifat,

Thank you for submitting your manuscript to PLOS ONE. After careful consideration, we feel that it has merit but does not fully meet PLOS ONE’s publication criteria as it currently stands. Therefore, we invite you to submit a revised version of the manuscript that addresses the points raised during the review process. As explained previously, since the transfer in editorship this has been sent to a new reviewer, who has provided detailed comments for improvement.   I appreciate this is frustrating, but I am going to ask you to address their comments as well.

Please submit your revised manuscript by Nov 21 2022 11:59PM. If you will need more time than this to complete your revisions, please reply to this message or contact the journal office at plosone@plos.org. When you're ready to submit your revision, log on to https://www.editorialmanager.com/pone/ and select the 'Submissions Needing Revision' folder to locate your manuscript file.

Please include the following items when submitting your revised manuscript:

  • A rebuttal letter that responds to each point raised by the academic editor and reviewer(s). You should upload this letter as a separate file labeled 'Response to Reviewers'.

  • A marked-up copy of your manuscript that highlights changes made to the original version. You should upload this as a separate file labeled 'Revised Manuscript with Track Changes'.

  • An unmarked version of your revised paper without tracked changes. You should upload this as a separate file labeled 'Manuscript'.

If you would like to make changes to your financial disclosure, please include your updated statement in your cover letter. Guidelines for resubmitting your figure files are available below the reviewer comments at the end of this letter.

If applicable, we recommend that you deposit your laboratory protocols in protocols.io to enhance the reproducibility of your results. Protocols.io assigns your protocol its own identifier (DOI) so that it can be cited independently in the future. For instructions see: https://journals.plos.org/plosone/s/submission-guidelines#loc-laboratory-protocols. Additionally, PLOS ONE offers an option for publishing peer-reviewed Lab Protocol articles, which describe protocols hosted on protocols.io. Read more information on sharing protocols at https://plos.org/protocols?utm_medium=editorial-email&utm_source=authorletters&utm_campaign=protocols.

We look forward to receiving your revised manuscript.

Kind regards,

Alison Parker

Academic Editor

PLOS ONE

[Note: HTML markup is below. Please do not edit.]

Reviewers' comments:

Reviewer's Responses to Questions

Comments to the Author

1. If the authors have adequately addressed your comments raised in a previous round of review and you feel that this manuscript is now acceptable for publication, you may indicate that here to bypass the “Comments to the Author” section, enter your conflict of interest statement in the “Confidential to Editor” section, and submit your "Accept" recommendation.

Reviewer #1: All comments have been addressed

Reviewer #2: (No Response)

**********

2. Is the manuscript technically sound, and do the data support the conclusions?

The manuscript must describe a technically sound piece of scientific research with data that supports the conclusions. Experiments must have been conducted rigorously, with appropriate controls, replication, and sample sizes. The conclusions must be drawn appropriately based on the data presented.

Reviewer #1: Yes

Reviewer #2: Partly

**********

3. Has the statistical analysis been performed appropriately and rigorously?

Reviewer #1: Yes

Reviewer #2: I Don't Know

**********

4. Have the authors made all data underlying the findings in their manuscript fully available?

The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception (please refer to the Data Availability Statement in the manuscript PDF file). The data should be provided as part of the manuscript or its supporting information, or deposited to a public repository. For example, in addition to summary statistics, the data points behind means, medians and variance measures should be available. If there are restrictions on publicly sharing data—e.g. participant privacy or use of data from a third party—those must be specified.

Reviewer #1: Yes

Reviewer #2: No

**********

5. Is the manuscript presented in an intelligible fashion and written in standard English?

PLOS ONE does not copyedit accepted manuscripts, so the language in submitted articles must be clear, correct, and unambiguous. Any typographical or grammatical errors should be corrected at revision, so please note any specific errors here.

Reviewer #1: Yes

Reviewer #2: Yes

**********

6. Review Comments to the Author

Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters)

Reviewer #1: Authors have addressed all the comments accordingly in the revised manuscript. Authors have addressed all the comments accordingly in the revised manuscript.

Reviewer #2: Dear authors,

This is my first revision of your article in which I ask for major revisions. Here are my comments:

1. Introduction

General comment:

I found the Introduction incomplete and not well structured. You fail to introduce the knowledge gap your article is coming to fill. When you focalize on Gelemso, the paragraph is disconnected from the first part. Moreover, you point to institutions as the main source of SW, but then you focus your research on households. Also, you do not include Khat consumption questions in your survey (or at least this is not presented in the Results analysis).

You said, “Although there are limited SWM facilities in the town, most of the time the solid waste have been indiscriminately disposed along roadsides and into open areas and hence the current status of the SWM problem in the town has reached a critical stage.” But both facts may be correlated (as your results show, by the way).

And then you state: “This shows that the people's overall understanding about solid waste and SWM practices in the town are not well established.” However, this is a hypothesis and not a statement.

You should restructure the Introduction to better explain why the information you present in the article is important and what knowledge gap are you filling.

Specific comments:

Two first phrases of the 2nd paragraph should be unified.

2. Methods

Specific comments:

In section 2.1, a description of the waste management system of Gelemso is needed. What kind of facilities people have access to, to dispose waste? Waste pickers are active in Gelemso? Have the Municipality a public waste collection service? Of what kind? How many containers are available? Who pick up waste from containers and where it is waste finally disposed? All these questions are crucial to understand the answers to the survey questions.

In section 2.2, You should explain from which list you made the systematic random sampling. Do you have a list of all the households? Selected households they all accepted to participate in the study? A satellite image of the town with the identification of the selected households would be a plus.

In 2.3, the structure of the paragraph describing definitions should be reformulated because it is not understandable.

You skip from 2.4 to 2.7

3. Results (General comment: all the data should be available)

Section 3.1: information presented in this section is not used in the Discussion section. Either you use it in section 4, or you remove it from section 3.

Section 3.2: You say, “About 96% of the households gave the correct response regarding solid waste as the major pollutant of the environment”. Why can you affirm that SW is the main environmental pollution source?

Many questions are not well formulated:

Does solid waste pollute the environment? --> It depends on how it is managed

Do you know solid waste is being a wealth? --> You give the answer in the question. "Do you consider..." "Do you think" "Do you perceive..."

The amount of solid waste can be reduced by reusing at household level? --> It is an obvious question

Sorting of solid waste at home level helps for SWM? --> It depends on how the system is structured and you did not gave the reader any elements to know that.

Section 3.3: You give % of waste composition. But waste characterization studies have specific methodologies, and it seems you do not follow any of them. You should remove Figure 1 and all mentions of % of types of waste from your manuscript.

You say, “However, the majority (79.5%) of the households disposed of their solid waste illegally, either in the backyard with sacs or along the roadsides and in gully (Table 4).” But may be they expected a municipal kerbside collection. That’s why the Solid Waste Management system description is so important.

You say: “The majority (89.2%) of the households reported the absence of adequate solid waste landfills or damping sites in the city and thus had practiced an improper SWM (Table 4)”. � It seems the problem is not people are not well informed but the absence of infrastructure!

3.4 In the questions you included: “How do you get rid of solid wastes from home”. Do you considered the possibility of people giving different destinations to recycling waste and non-recycling waste?

4. Discussion

First paragraph can be part of the Introduction.

After reading the discussion, it is still not clear why improper disposal is occurring in Gelemso.

5. Conclusion

Should be modified accordingly.

**********

7. PLOS authors have the option to publish the peer review history of their article (what does this mean?). If published, this will include your full peer review and any attached files.

If you choose “no”, your identity will remain anonymous but your review may still be made public.

Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy.

Reviewer #1: Yes: Shahbaz Khan

Reviewer #2: No

**********

[NOTE: If reviewer comments were submitted as an attachment file, they will be attached to this email and accessible via the submission site. Please log into your account, locate the manuscript record, and check for the action link "View Attachments". If this link does not appear, there are no attachment files.]

While revising your submission, please upload your figure files to the Preflight Analysis and Conversion Engine (PACE) digital diagnostic tool, https://pacev2.apexcovantage.com/. PACE helps ensure that figures meet PLOS requirements. To use PACE, you must first register as a user. Registration is free. Then, login and navigate to the UPLOAD tab, where you will find detailed instructions on how to use the tool. If you encounter any issues or have any questions when using PACE, please email PLOS at figures@plos.org. Please note that Supporting Information files do not need this step.

PLoS One. 2023 Feb 10;18(2):e0278181. doi: 10.1371/journal.pone.0278181.r004

Author response to Decision Letter 1


27 Oct 2022

Date: 25 October 2022

We are very much grateful to the academic editor who managed this manuscript again and also for the reviewers for their valuable comments to our manuscript. The following are point-by-point responses to reviewer comments for the manuscript number: PONE-D-22-02551R1.

Reviewer #2:

First of all, I would like to thank the second reviewer, who reviewed this manuscript and provided us the most valuable comments and suggestions. We received all the comments positively and frankly specking the manuscript is now well enriched.

Q#1: Introduction

General comment:

I found the Introduction incomplete and not well structured. You fail to introduce the knowledge gap your article is coming to fill.

Answer: The whole introduction section is now modified according to the comments.

When you focalize on Gelemso, the paragraph is disconnected from the first part. Moreover, you point to institutions as the main source of SW, but then you focus your research on households. Also, you do not include Khat consumption questions in your survey (or at least this is not presented in the Results analysis).

Answer: The specific paragraph as well as the focus area of the research has been modified following the comments.

You said, “Although there are limited SWM facilities in the town, most of the time the solid waste have been indiscriminately disposed along roadsides and into open areas and hence the current status of the SWM problem in the town has reached a critical stage.” But both facts may be correlated (as your results show, by the way). And then you state: “This shows that the people's overall understanding about solid waste and SWM practices in the town are not well established.” However, this is a hypothesis and not a statement.

Answer: We accept the comments and modified the sentence accordingly.

Specific comments:

Two first phrases of the 2nd paragraph should be unified.

Answer: The comment is corrected

Q#2: Methods

Specific comments:

In section 2.1, a description of the waste management system of Gelemso is needed. What kind of facilities people have access to, to dispose waste? Waste pickers are active in Gelemso? Have the Municipality a public waste collection service? Of what kind? How many containers are available? Who pick up waste from containers and where it is waste finally disposed?

Answer: A paragraph explaining the whole waste management system of the Gelemso municipality including kind of facilities, waste pickers, waste collectors, the presence and number of shared container, damping sites and how the collected wastes are finally damped to the damping site are included in the “Method section” under sub section 2.1.

In section 2.2, You should explain from which list you made the systematic random sampling. Do you have a list of all the households? Selected households they all accepted to participate in the study?

Answer: The whole lists of the households were obtained from municipality office, and the section was made from the lists. The numbers of actual household who completed the questionnaire from the total sample size (396) were 390 (98.5% response rate). The following comments are now included and corrected in the revised manuscript.

A satellite image of the town with the identification of the selected households would be a plus.

Answer: We have included map of study area in supplementary file.

In 2.3, the structure of the paragraph describing definitions should be reformulated because it is not understandable.

Answer: Corrected as you suggested

You skip from 2.4 to 2.7

Answer: Corrected as you suggested

Q#3: Results (General comment: all the data should be available)

Section 3.1: information presented in this section is not used in the Discussion section. Either you use it in section 4, or you remove it from section 3.

Answer: Now included in the discussion part.

Section 3.2: You say, “About 96% of the households gave the correct response regarding solid waste as the major pollutant of the environment”. Why can you affirm that SW is the main environmental pollution source?

Answer: Now modified in the revised version.

Many questions are not well formulated:

Does solid waste pollute the environment? --> It depends on how it is managed

Do you know solid waste is being a wealth? --> You give the answer in the question. "Do you consider..." "Do you think" "Do you perceive..."

The amount of solid waste can be reduced by reusing at household level? --> It is an obvious question

Sorting of solid waste at home level helps for SWM? --> It depends on how the system is structured and you did not gave the reader any elements to know that.

Answer: Some of the questions including the mentioned questions were modified in revised version.

Section 3.3: You give % of waste composition. But waste characterization studies have specific methodologies, and it seems you do not follow any of them. You should remove Figure 1 and all mentions of % of types of waste from your manuscript.

Answer: All types of waste composition results were removed from the manuscript.

You say, “However, the majority (79.5%) of the households disposed of their solid waste illegally, either in the backyard with sacs or along the roadsides and in gully (Table 4).” But maybe they expected a municipal kerbside collection. That’s why the Solid Waste Management system description is so important.

You say: “The majority (89.2%) of the households reported the absence of adequate solid waste landfills or damping sites in the city and thus had practiced an improper SWM (Table 4)”. It seems the problem is not people are not well informed but the absence of infrastructure!

Answer: Descriptions of the solid waste management system in Gelemso town were described briefly in the revised manuscript. I hope the question is now understandable for the readers.

3.4 In the questions you included: “How do you get rid of solid wastes from home”. Do you consider the possibility of people giving different destinations to recycling waste and non-recycling waste?

Answer: Yes.

Q#4: Discussion

First paragraph can be part of the Introduction.

Answer: The paragraph was deleted from the discussion part according to the suggestion.

After reading the discussion, it is still not clear why improper disposal is occurring in Gelemso.

Answer: Now the discussion part is modified to why improper sold waste disposal is occurred in the study site.

Q#5: Conclusion: Should be modified accordingly.

Answer: The conclusion part has modified according to the comment in the revised manuscript.

Attachment

Submitted filename: Response to reviewers.doc

Decision Letter 2

Alison Parker

14 Nov 2022

Knowledge, attitudes and practices on household solid waste management and associated factors in Gelemso town, Ethiopia

PONE-D-22-02551R2

Dear Dr. Yifat,

We’re pleased to inform you that your manuscript has been judged scientifically suitable for publication and will be formally accepted for publication once it meets all outstanding technical requirements.

Within one week, you’ll receive an e-mail detailing the required amendments. When these have been addressed, you’ll receive a formal acceptance letter and your manuscript will be scheduled for publication.

An invoice for payment will follow shortly after the formal acceptance. To ensure an efficient process, please log into Editorial Manager at http://www.editorialmanager.com/pone/, click the 'Update My Information' link at the top of the page, and double check that your user information is up-to-date. If you have any billing related questions, please contact our Author Billing department directly at authorbilling@plos.org.

If your institution or institutions have a press office, please notify them about your upcoming paper to help maximize its impact. If they’ll be preparing press materials, please inform our press team as soon as possible -- no later than 48 hours after receiving the formal acceptance. Your manuscript will remain under strict press embargo until 2 pm Eastern Time on the date of publication. For more information, please contact onepress@plos.org.

Kind regards,

Alison Parker

Academic Editor

PLOS ONE

Additional Editor Comments (optional):

Reviewers' comments:

Reviewer's Responses to Questions

Comments to the Author

1. If the authors have adequately addressed your comments raised in a previous round of review and you feel that this manuscript is now acceptable for publication, you may indicate that here to bypass the “Comments to the Author” section, enter your conflict of interest statement in the “Confidential to Editor” section, and submit your "Accept" recommendation.

Reviewer #2: All comments have been addressed

**********

2. Is the manuscript technically sound, and do the data support the conclusions?

The manuscript must describe a technically sound piece of scientific research with data that supports the conclusions. Experiments must have been conducted rigorously, with appropriate controls, replication, and sample sizes. The conclusions must be drawn appropriately based on the data presented.

Reviewer #2: Yes

**********

3. Has the statistical analysis been performed appropriately and rigorously?

Reviewer #2: Yes

**********

4. Have the authors made all data underlying the findings in their manuscript fully available?

The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception (please refer to the Data Availability Statement in the manuscript PDF file). The data should be provided as part of the manuscript or its supporting information, or deposited to a public repository. For example, in addition to summary statistics, the data points behind means, medians and variance measures should be available. If there are restrictions on publicly sharing data—e.g. participant privacy or use of data from a third party—those must be specified.

Reviewer #2: Yes

**********

5. Is the manuscript presented in an intelligible fashion and written in standard English?

PLOS ONE does not copyedit accepted manuscripts, so the language in submitted articles must be clear, correct, and unambiguous. Any typographical or grammatical errors should be corrected at revision, so please note any specific errors here.

Reviewer #2: Yes

**********

6. Review Comments to the Author

Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters)

Reviewer #2: Congratulations for your job improving the article. You addressed all the comments and now the article is much better.

**********

7. PLOS authors have the option to publish the peer review history of their article (what does this mean?). If published, this will include your full peer review and any attached files.

If you choose “no”, your identity will remain anonymous but your review may still be made public.

Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy.

Reviewer #2: No

**********

Acceptance letter

Alison Parker

13 Jan 2023

PONE-D-22-02551R2

Knowledge, attitudes and practices on household solid waste management and associated factors in Gelemso town, Ethiopia

Dear Dr. Tigu:

I'm pleased to inform you that your manuscript has been deemed suitable for publication in PLOS ONE. Congratulations! Your manuscript is now with our production department.

If your institution or institutions have a press office, please let them know about your upcoming paper now to help maximize its impact. If they'll be preparing press materials, please inform our press team within the next 48 hours. Your manuscript will remain under strict press embargo until 2 pm Eastern Time on the date of publication. For more information please contact onepress@plos.org.

If we can help with anything else, please email us at plosone@plos.org.

Thank you for submitting your work to PLOS ONE and supporting open access.

Kind regards,

PLOS ONE Editorial Office Staff

on behalf of

Dr. Alison Parker

Academic Editor

PLOS ONE

Associated Data

    This section collects any data citations, data availability statements, or supplementary materials included in this article.

    Supplementary Materials

    S1 File. Survey questionnaire (English version).

    (DOCX)

    S2 File

    (PDF)

    Attachment

    Submitted filename: Response to reviewers.doc

    Attachment

    Submitted filename: Response to reviewers.doc

    Data Availability Statement

    All relevant data are within the paper and its Supporting Information files.


    Articles from PLOS ONE are provided here courtesy of PLOS

    RESOURCES