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Arsenic in ground water in Lapeer County, Michigan

May 1, 2001

Previous studies of ground-water resources in Michigan by the Michigan Department of Community Health (MDCH), the Michigan Department of Environmental Quality (MDEQ), and the U.S. Geological Survey (USGS) indicate that in several counties in the southeastern part of the State the concentrations of arsenic in ground water may exceed the U.S. Environmental Protection Agency (USEPA) maximum contaminant level (MCL) of 50 micrograms per liter [μg/I.]. This MCL was established in 1986. The Safe Drinking Water Act, as amended in 1996, requires USEPA to revise this standard in 2000. In June 2000, the USEPA proposed a revised MCL of 5 μg/L.

In 1996, the USGS, in cooperation with the MDEQ and the Health Departments of Genesee, Huron, Lapeer, Livingston, Oakland, Sanilac, Shiawassee, Tuscola and Washtenaw counties, began a study of the factors controlling arsenic occurrence and concentrations in ground water in southeastern Michigan. This study is one of four USGS Drinking Water Initiative projects throughout the United States.

Citation Information

Publication Year 2000
Title Arsenic in ground water in Lapeer County, Michigan
DOI 10.3133/fs12900
Authors Sheridan K. Haack, Cynthia M. Rachol
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Fact Sheet
Series Number 129-00
Index ID fs12900
Record Source USGS Publications Warehouse
USGS Organization U.S. Geological Survey