Social & Preventive Medicine General 4c37b8f5 According to the WHO, what is the minimum bacteriological standard for drinking water - A All the samples should not contain coliform organisms B 3 consecutive samples of water should not contain any coil forms C 3 coliforms in a 100 ml water D I coliform in a 100 ml water High-Yield Explanation Ans. is 'a' i.e., All the samples should not contain coliform organisms