Skip to Main Content

We surveyed 123 households and collected 47 domestic greywater samples in Traditional Authority (TA) Timbiri and Sub-Traditional Authority (STA) Nyaluwanga, which are located in the Nkhata Bay District of northern Malawi (Table 1). Focus group discussions were convened with members of the local Water Users’ Association (WUA), who are responsible for managing water access in the study area. Respondent households were in proximity to the Chikwina-Mpamba gravity-fed water distribution system, which covers an area of approximately 57 km2 and whose ongoing development has been supported by the non-governmental organization World Vision Malawi (WVM). Approximately 1,400 households are served by the gravity-fed scheme. Geographic boundaries were determined by which of the system's six storage tanks supplied the tap nearest the respondent's household. The number of respondents interviewed from each geographic area was proportional to the total number of taps supplied by each tank. Greywater samples were collected at the conclusion of 47 (one sample per household) of the 123 household interviews, generated from a variety of domestic sources that respondents had on hand at the time of the interview. After collecting each greywater sample, survey teams additionally collected a sample directly from the water source where the greywater originated.

Table 1

Total number of water samples and households surveyed for each tank's geographical region

Tank no.No. greywater samplesNo. water point samplesNo. households surveyedTotal no. taps suppliedTank capacity (m3)
7 (15%) 7 (15%) 19 (15%) 24 (9%) 150a 
9 (19%) 9 (19%) 25 (20%) 60 (22%) 50a 
9 (19%) 9 (19%) 15 (12%) 29 (11%) 50a 
5 (11%) 5 (11%) 19 (15%) 15 (6%) 50a 
15 (32%) 15 (32%) 39 (32%) 132 (49%) 90a 
2 (4%) 2 (4%) 6 (5%) 10 (4%) 25 
Total 47 47 123 270 415 
Tank no.No. greywater samplesNo. water point samplesNo. households surveyedTotal no. taps suppliedTank capacity (m3)
7 (15%) 7 (15%) 19 (15%) 24 (9%) 150a 
9 (19%) 9 (19%) 25 (20%) 60 (22%) 50a 
9 (19%) 9 (19%) 15 (12%) 29 (11%) 50a 
5 (11%) 5 (11%) 19 (15%) 15 (6%) 50a 
15 (32%) 15 (32%) 39 (32%) 132 (49%) 90a 
2 (4%) 2 (4%) 6 (5%) 10 (4%) 25 
Total 47 47 123 270 415 

aSource:World Vision Malawi (2015).

Close Modal

or Create an Account

Close Modal
Close Modal