Pitt, R., Lalor, M., Field, R., Adrian, D., Barbe, D. 1993. Investigation of Inappropriate Pollutant Entries into Storm Drainage Systems: A User’s Guide. U.S. EPA, Washington, DC. Pages 1-99

pollutant, urban, Stormwater Utility, dry-weather flow

The User’s Guide is the result of a series of EPA sponsored research projects to develop a procedure to investigate non-stormwater entries into storm drainage systems. A number of past projects have found that dry-weather flows discharging from storm drainage systems can contribute significant pollutant loadings to receiving waters. These dry-weather flows may originate from many sources, to include sanitary wastewater or industrial and commercial pollutant entries, failing septic tank systems, and vehicle maintenance activities. The User’s Guide contains information to allow the design and conduct of local investigations to identify the types and to estimate the magnitudes of these non-stormwater entries.