Fig. 2

Chlorine concentration found in stored drinking water in the study household before (visit # 1) and after intervention (visit # 2–4). Three study children were enrolled from HH1, and one each from the HH2 and HH3. In HH2, the chlorine concentration was 0 at the visit 1. Water samples from each household were collected from stored drinking water pot during each household visit, and the presence of free chlorine was tested in each water sample using a digital colorimeter [26] following manufacturer’s instruction (Hach, Loveland, CO, USA)