Question

The presence of Coliform bacteria is an indicator of water pollution. Explain?

Answer 1

Coliform bacteria:

Coliform bacteria are defined as rod-shaped gram-negative nonendospore forming bacteria that ferment lactose with the production of acid and gas at 35–37°C.

Coliform bacteria in river water:

1. Coliform bacteria present in the river water show that the water is contaminated and indicates water is disease-causing bacteria.
2. It indicates that the water is contaminated with fecal matter which has other more harmful disease-causing microorganisms.