Coliform Bacteria are microorganisms that are present in soil, sewage, surface water and very shallow groundwater. Most coliform bacteria are harmless, but the presence of coliform bacteria in drinking water indicates a possible contamination problem in the drinking water system. Contamination of the well or distribution system (plumbing into the home) may provide an opportunity for harmful bacteria to enter the drinking water creating a potential health hazard.
Total coliforms include bacteria that are found in the soil, in water that has been influenced by surface water, and in human or animal waste.
Measure Description:
- Total Coliform Tests is the number of tests for Total Coliforms conducted on private water wells.
- Positive Total Coliform Tests is the number of positive tests for Total Coliforms conducted on private water wells.
- Percent Positive Total Coliform Tests is the number of tests for Total Coliforms conducted on private water wells that were positive.