<prompt> Potable water is defined as :-Zero coliforms per 100 mlOne coliform per 100 ml10 coliforms per 100 ml100 coliforms per 100 ml  <response>: - Drinking water, also known as potable water, is water that is safe to drink or to use for food preparation. - Potable water is defined as: zero coliforms in any amount of drinking water. - Bacteriological indicators of water quality in India: Coliforms -Overall best indicator. Fecal streptococci - Indicate recent contamination of drinking water. Clostridium perfirenges - Indicate remote contamination of drinking water. 