Coliform bacteria are:

Coliform bacteria are:

• A. Pathogens
• B. Indicators
• C. Nutrients
• D. Inhibitors

Answer: (B)

Coliform bacteria are used as indicators of fecal contamination and the effectiveness of wastewater treatment. They’re not considered pathogens themselves; their presence signals that fecal pollution, and potentially disease-causing organisms, could be present. They serve as a practical signal to check sanitary quality and whether disinfection and treatment processes are working properly. They are not nutrients nor inhibitors, so their role is about indicating contamination risk rather than feeding microbes or hindering reactions.

Coliform bacteria are used as indicators of fecal contamination and the effectiveness of wastewater treatment. They’re not considered pathogens themselves; their presence signals that fecal pollution, and potentially disease-causing organisms, could be present. They serve as a practical signal to check sanitary quality and whether disinfection and treatment processes are working properly. They are not nutrients nor inhibitors, so their role is about indicating contamination risk rather than feeding microbes or hindering reactions.