fecal indicator organisms

Fecal indicator organisms are bacteria or other microorganisms used to assess the quality of water, particularly to detect the presence of fecal contamination. They are not harmful themselves but signal that potentially harmful pathogens from human or animal waste may be present. Common examples include E. coli and fecal coliform bacteria. Testing for these indicators helps ensure water safety for drinking, recreational activities, and environmental health by identifying contamination that requires attention or treatment.