New USGS Circular - Factors Affecting Public-Supply-Well Vulnerability to Contamination

New USGS findings on factors affecting public-supply-well vulnerability to contamination
The U.S. Geological Survey’s National Water–Quality Assessment (NAWQA) Program has released new information from a 10 year study of factors affecting public-supply-well vulnerability to contamination.
The report describes why it is important to understand the sources of recharge water for a well, the geochemical conditions encountered by water drawn into a well, the mixture of waters of different ages that simultaneously enter a well, and if direct pathways exists in an aquifer that allow water and contaminants to rapidly move toward a well. The USGS tracked the movement of contaminants in public-supply wells in Modesto, Calif., Woodbury, Conn., near Tampa, Fla., York, Nebr., near Carson City and Sparks, Nev., Glassboro, N. J., Albuquerque, N. Mex., Dayton, Ohio, San Antonio, Tex., and Salt Lake City, Utah.
Learn more about public-supply well vulnerability from USGS fact sheets and video podcast on our website:
Circular 1385 PDF