Table 4 Bacteriological analysis of community water supply from untreated water sources with different risk categories in Dabat district, northwest Ethiopia, January to June 2016
Group | Number of E. coli (CFU/100 mL) in each risk category (n = 188) | p value | ||
|---|---|---|---|---|
0–10 (low risk) | 11–100 (medium risk) | > 100 (high risk) | ||
Control, n (%) | 16 (18.6) | 21 (24.4) | 49 (57.0) | 0.79 |
Intervention, n (%) | 23 (22.5) | 26 (25.5) | 53 (52.0) | |