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Naturally Occurring Arsenic in Southeast Michigan Ground Water


USGS Hydrologists at work collecting geologic materials for arsenic analysis, Huron County, Michigan

 

USGS Hydrologists at work collecting geologic materials for arsenic analysis, Huron County, Michigan

 

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 there are several counties in the southeastern part of the State where concentrations of arsenic in ground water may exceed the recently revised U.S. Environmental Protection Agency (USEPA) maximum contaminant level (MCL) of 10 micrograms per liter [ug/L; also expressed as 0.010 milligrams per liter (mg/L)]. This MCL was established in January 2001.

 

EPA Arsenic in Drinking Water Basic Information

 

This study identified some geologic and hydrologic factors that affect the distribution, concentration, and toxicity of arsenic in ground water from eight counties in southeastern Michigan. A companion study in Oakland County has produced fact sheets showing the distribution of arsenic, nitrate, and chloride in ground water in Oakland County.

Links to Other Resources:

Fact Sheets: Arsenic in Ground Water in:

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Fact Sheet: Arsenic, Nitrate and Chloride in Ground Water

References:

Haack, S.K. and S. L. Treccani, 2000. Arsenic concentration and selected geochemical characteristics for ground water and aquifer materials in southeastern Michigan. U.S. Geological Survey, Water Resources Investigations Report 00-4171, 39 pages.

Kim, Myoung-Jin, Jerome Nriagu, and Sheridan Haack, 2000. Carbonate ions and arsenic dissolution by groundwater. Environmental Science and Technology vol 34, pages 3094-3100.

Welch, A. H., Westjohn, D. B., Helsel, D. R., and Wanty, R. B., 2000, Arsenic in Ground Water of the United States: Occurence and Geochemistry. Vol. 38, No. 4 - Ground Water July-August 2000, 589-604 p.

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