Occurrence of selected radionuclides in ground water used for drinking water in the United States

http://water.usgs.gov/pubs/wri/wri004273/

Results (*.pdf) of a 1998 targeted reconnaissance survey on the sources of radium, polonium, and lead radionuclides, data collection and laboratory methods, existing occurrences in drinking water, risk assessments, and compliance monitoring.

by Focazio, Michael J.; Szabo, Zoltan; Kraemer, Thomas F.; Mullin, Ann H.; Barringer, Thomas H.; and dePaul, Vincent T.

U.S. Geological Survey Water Resources Investigations Report 00-4273