Project Number:
DNR-091
Other Project Number:
WR91R020
Funding Year:
1991
Contract Period:
07/01/1991 - 09/30/1992
Funding Source:
DNR
Investigator(s) and affiliations:
M. G. Mudrey, Wisconsin Geological and Natural History Survey;
K. R. Bradbury, Wisconsin Geological and Natural History Survey
K. R. Bradbury, Wisconsin Geological and Natural History Survey
Abstract:
Introduction: Knowledge of the distribution of radionuclides such as radon and radium in Wisconsin groundwater is well developed only in the north-central part of Wisconsin (Fitzgerald, 1990) where naturally occurring radioactive constituents are present in groundwater at levels which exceed maximum contaminant levels specified or proposed by the Federal Safe Drinking Water Act. Eighty to ninety percent of well sampled by Fitzgerald (1990) exceed the proposed standards of 300 pCi/L of radon in drinking water in northcentral Wisconsin. High levels of radium are documented in public water supplies in eastern Wisconsin (Hahn, 1990).