Center for Watershed Protection. 2016. Safe Waters, Healthy Waters: A Guide for Citizen Groups on Bacteria Monitoring in Local Waterways. CWP, Ellicott City,  MD. 53 pages

The guide provides step-by-step instructions to create a customized bacteria monitoring program, methods to investigate potential pollutant sources, and resources for putting collected data to use. It focuses especially on human sewage sources and monitoring techniques that are simple, reliable and low-cost.