Table 2. Variables to be extracted from the articles for full-text screening.

	Variable	Details
1	Authors	Authors of the article
2	Publication type	Thesis, article
3	Title of the article	Full title
4	Year of publication	Year the article was published or written
5	Geographical scope of the study	City/cities the study was conducted
6	Study type
7	Duration of the study (if applicable)
8	Rate of urbanisation	Metric, population of the city
9	Water demand/supply	Main water source, main water distributor, water demand
10	Indicators of water supply	Frequency of water supply, water rationing, cost, coverage, quality
11	Water-borne diseases/symptoms/etiological agents	Diarrhoea, cholera, typhoid, amoebiasis, dysentery, gastroenteritis, cryptosporidium, cyclosporiasis, giardiasis, rotavirus
12	Cases of water-borne disease/symptoms/etiological agents	Lab-confirmed/self-reported/clinically diagnosed
13	Water insufficiency	Metric, proportion of urban population with sufficient water supply, proportion of urban population with insufficient water supply
14	Use of the WHO water insufficiency classification of less that 50 litres per person per day	Yes/No
15	Proportion of population with water borne diseases	Metric
16	Area proposed for future research