Table 2.

Issues explored through quantitative and qualitative data collection tools with the study households of East Arichpur, Bangladesh from June 2014 to December 2015.

Topic	Specific questions/issues explored
	Baseline data collection
	Demographic information
	Name of the para, How long have you been living here, how many rooms do you have, what materials are used to construct the wall and the roof, each of the household member's age, sex, education, occupation, relationship with household head and questions related to households wealth index and income per month
	Water sources and usage
Water source	Water source/s was/were used in last one year (tap/pipe/hand pump/river/well/pond/rainwater), if ground water, was it government or private (pump/well/ tubewell), presence of storage (roof tank/ground tank), flow of water for 24 hours continuous or interrupted, source shared with other household/s or not, is there any waiting time for water collection. Usage of water by each specific source (cooking, drinking, bathing, washing and cleaning).
Storage of drinking water in household	Is the drinking water treated, if yes how often, type of treatment (boiling, filter, chlorine, alum), water stored container used at household in last one month, Type of containers used (bucket/clay pot, plastic drum), size of the containers (in liter), handling of water (pour water, running from tap, dipped in container), cleaning information of container (how often, using which cleaning agent).
	Cooking sites
	How many households shared the same stove and cooking site
	Sanitation and diarrhea last one year
Defecation practices	Disposal of feces of young child <2 years, defecation practices of children 2–5 years, number of latrines household has access to, how many households share the latrine, probing of defecation when the latrine is occupied, is there any broken latrine.
Diarrhea in last one year	Is there any household member hospitalized in the last 1 year for diarrhea, Has anyone died from diarrhea, age of family member at death
	Spot observation (household and compound premises)
	Is there any feces visible in latrine or in the yard, Is there any stagnant water inside compound (common yard shared by multiple households), any handwashing facility in latrine, presence of soap or detergent in handwashing facility, is household floor clean (no presence of human/bird/animal feces or waste), is the compound floor clean.
Kitchen utensils	Plate, glass, mug and other utensils appear clean or not, is there any presence of fly in household cooking area
Cleanliness of household members	Hands of the present adult and children under five are clean or not (visible dirt, black fingernails), Does the person's cloth appear clean or not (visible fresh dirt, food, grime), is there any animal present in the compound (list of animals), do animals roam freely in household or compound
	Photo and global positioning system (GPS)
Visual documentation	Photo of room of the household, floor, latrine, water sources, each of the water storage containers of the household and cooking site, garbage and defecation points. GPS coordinates of all the study households.
	Six weekly visit
Household member	Change of any household member since last visit (age and sex of new member). Record if someone permanently left household since last visit.
Water use	Same source using since last visit, type of source and storage since last visit, is there more or less water available in the source since last visit, using more or less water daily compared to last visit. Change of container since last visit, if yes type and size of new container/s (in liter).
Last 24 hours	Flow of water in collection point within last 24 hours (24 hours available, less than 24 hours [include specific time/hour]), water collection point within last 24 hours, Was the drinking water clear or cloudy/colored/dirty, Was the water had good smell or bad smell, taste was better or not good, treatment of water last 24 hours.
Food intake since yesterday	List of foods have been eating by household member/s since yesterday (including fish, meet, rice, rice soaked in water, curry, lentil, raw vegetable, fruit, betel leaf and nut), time of eating (at breakfast, lunch, dinner), How many time food was cooked yesterday, If there is any food left today from yesterday to eat.
	Diarrhea
	Is there anyone in the household had diarrhea since last 2 days, if yes did they call to the 'Choleraphone' center, if not why not.
Photos	Collect picture of the new container/s
	Spot observation (household and compound premises)
	(Same as baseline)
	Water quantification of last 24 hours (using 'tally sheet')
Use of 'tally sheet'	How many containers were used from last 24 hours, number of time filled the container/s from last 24 hours, was there any new container filled with water which is not recorded in '24 hours tally sheet' given to you, if yes record the type and size of container and number of times this new container/s was filled.
Activities done without container	What are the activities you/anyone of the household performed without using water from container in last 24 hours, how many times were the following activities done without using any container since last 24 hours (washing hands, bathing, cleaning dishes, washing cloth).
	Household questionnaire for diarrhea affected person
Demography	Age and sex of the patient, ID of the patient including household ID.
Diarrhea	How many times the person defecated loose stool in last 24 hours, how many days ago loose stool started, from what time of the day loose stool started, was the loose stool colorless or of any color, was it watery, did it contain blood/mucous, any symptoms of fever/vomiting/tiredness/fainting/cramping, did the patient visit a community clinic/hospital/pharmacy, was any diagnosis done, if yes what was the result, what type of medicine was taken during illness, did the patient stop going to work/school due to illness, if yes for how many days.
Water use	Did the patient use different water source since our last visit, if yes identify the place (identify source type), why did you change water source, what purpose you used the water source for.
Food habit	What type of food the patient ate before loose stool started (list from six-weekly questionnaire), did the patient eat any food where water was added.
Rectal swab	Was any rectal swab taken from patient
	Qualitative exploration
	Day long observation
Water measurement	Volume and frequency of water use for personal activity: hand, face, leg rinsing/washing, bathing, ablution, water use after urination and defecation Volume and frequency of water use for domestic activity: washing cooking utensils, cleaning kitchen, cleaning household premises, mopping house, cleaning toilet and bathroom. The team also recorded the changes in frequency, sources and quantity based on different months, and the reason behind such changes.
	In-depth and follow-up interview
Individual water use practices	Drinking, bathing, washing hand, face and legs, washing genital and anus after urination and defecation and reported quantity of water use in each of the household and personal activities.
Changes of water use	The changes in frequency, sources and quantity based on different season, and the reason behind such changes as well as practices of water use during extreme weather events; e.g., extreme heat, heavy and continuous rainfall, extreme cold or cold waves were recorded.
Perception and reason for water stress	What the informants perceived about water stress (i.e., water quantity and quality), reason for water stress, seasons of water stress, what were the coping strategies during water stress and what were the alternative sources of water during water stress (if any).
Water usage for domestic purpose	The team explored household activities that required water; cooking, washing vegetable, cleaning utensil, cleaning kitchen, cleaning leaving room and courtyard, cleaning toilet, and washing clothes only with the female members.