Bacteriological and protozoal study on domestic water supply in Karachi.

Four hundred and fifty eight water samples collected from domestic tanks and taps and community taps were analysed for bacterial contamination. Faecal pollution was more in domestic tanks and taps in Mehmoodabad, Korangi and least in water collected from community taps of Liaquatabad, Korangi and Mehmoodabad. Bacteria isolated were mostly E. coli, Enterobacter sp, Klebsiella sp. and A. faecalis, while other organisms (except Pseudomonas) were found in lower numbers. Salmonella para typhi and para typhi B, Shigella dysenteriae and Aeremonas sp. were found in Clifton area. Parasite (Fluke) was isolated from one water sample only.