Fecal coliform

"A portion of the coliform bacte- ria group originating in the intestinal tract of warm- blooded animals that passes into the environment in feces. Fecal coliform often is used as an indicator of the bacteriological safety of a water supply. Generally reported as colonies or colony forming units (cfu) per 100 milliliters (ml) of sample. (see coliform bacteria)." (Virginia Polytechnic Institute and State University, n.y.) 

Sources

Virginia Polytechnic Institute and State University. "A Glossary  of Water-Related Terms", by Brian Benham. Publication 442-759