What is coliform bacteria considered?

Coliform bacteria are considered indicator organisms because their presence in water typically signifies that the water may be contaminated with pathogens that can cause disease. They are commonly used in water quality testing because they are easy to detect and their abundance is higher in environments likely to contain fecal contamination. The presence of coliforms serves to alert water quality managers to possible contamination issues and the potential presence of harmful microorganisms. Monitoring for coliform bacteria is an essential aspect of ensuring the safety of drinking water supplies and helps guide necessary treatment or protective measures to safeguard public health.