Coliform bacteria

"A group of nonpathogenic organ- isms (Colon bacilli) usually found in the digestive tract of all warm-blooded animals and humans. The presence of coliform bacteria in water is an indicator of possible pollution by fecal material and the presence of patho- genic bacteria that can cause diseases such as intestinal infections, dysentery, hepatitis, typhoid fever and chol- era. Generally reported as colonies or colony forming units (cfu) per 100 milliliters (ml) of sample. (see fecal coliform)." (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 442-758