Managing Urban Watershed Pathogen Contamination

Perdek, J.M., Arnone, R.D., Stinson, M.K., Tucillo, M.E.

This document is written as a resource for state and local watershed managers who have the responsibility of managing pathogen contamination in urban watersheds. In addition it can be an information source for members of the public interested in watershed mitigation efforts aimed at reducing microbial contamination. It is written to support specific steps of the total maximum daily load (TMDL) process for meeting water quality standards in urban watersheds. The information provided can also support watershed evaluations conducted when disease outbreaks occur in the absence of standards violations. The document discusses the regulation of waterborne pathogens (Chapter 1), detection methods (Chapter 2), and combined sewer overflow control technologies and stormwater best management practices (Chapter 3). The table below identifies the steps of the TMDL process supported by each of the chapters. The intent is to supplement the information included in the EPA document Protocol for Developing Pathogen TMDLs, Office of Water, January 2001, EPA 841-R-00-002 guidance. This document was developed using information collected through extensive literature reviews by researchers in the Urban Watershed Management Branch (UWMB) of EPA’s National Risk Management Research Laboratory. The final document will be an official EPA report available through the UWMB Internet site http://www.epa.gov/ednnrmrl/.