How long may coliform bacteria survive on soil surfaces?

Coliform bacteria are a type of bacteria commonly used as an indicator of sanitary quality of food and water. They can survive in soil and on surfaces for varying lengths of time depending on several environmental factors, including moisture, temperature, and the presence of organic matter.

Research indicates that coliform bacteria can survive in soil for extended periods, with some studies showing survival times ranging from several days to several weeks. Specifically, coliforms can remain viable in soil for up to 38 days, particularly under favorable conditions that support their resilience.

This understanding is crucial for environmental health specialists as the presence of coliform bacteria in soil can indicate potential contamination of water sources, which can pose health risks to the community. The survival time reinforces the importance of monitoring soil and water quality to ensure public health safety.