Fig. 2

Camp-wise contamination scenario of faecal coliforms and E. coli in source and household (POU) water samples. a Bar diagram showing percent contamination of faecal coliforms before and after decontaminating the mouth of the tubewell and POU water. b Contamination scenario of E. coli before and after decontaminating the mouth of the tubewell and POU water. 15 out of 21 camps’ data are shown in the bar diagrams