The EPA Maximum Contaminant Level (MCL) for coliform bacteria in drinking water is zero (or no) total coliform per 100 ml of water
Both fecal coliform and E
This may reduce the oxygen level enough to kill fish and other aquatic life
) Examples of Water Quality Indicators: Total Coliforms
What level of E
The plate with the count between 20 and 80 colonies is selected for reporting the results, and the count is converted to colonies per 100 mL
This is recommended when you have a new storage tank or have work done on the well, or you find out the storage tank is contaminated with coliform bacteria