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National Drinking Water Database


Copper in Michigan


Copper is a naturally occuring metal and drinking water contaminant that enters tap water by corrosion of household plumbing systems and erosion of natural deposits. [read more]

The Most Polluted Communities in Michigan

170 water utilities reported detecting Copper in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Copper level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Mack. Co. Housing-Curtis
Curtis, MI
502 of 21037.5 ppb
(955 to 1120 ppb)
2City of Brighton
Brighton, MI
7,0002 of 21007.5 ppb
(950 to 1065 ppb)
3Eagle Harbor Township
Eagle Harbor, MI
802 of 21003.5 ppb
(365 to 1642 ppb)
4City of Mason
Mason, MI
6,8007 of 7890.32 ppb
(380 to 1495 ppb)
5Milford
Milford, MI
7,5202 of 2775 ppb
(560 to 990 ppb)
6City of Sandusky
Sandusky, MI
2,9163 of 3700.64 ppb
(393.75 to 1290 ppb)
7Sunny Acres Nursing Center
Bad Axe, MI
302 of 3646.67 ppb
(0 to 1052 ppb)
8The Shores ON Crooked Lake
Petoskey, MI
481 of 1634 ppb
(634 ppb)
9Crystal Falls Twp.-Townline
Crystal Falls, MI
3502 of 2631.25 ppb
(542.5 to 720 ppb)
10Hunters Glen
Southfield, MI
7002 of 2542.5 ppb
(15 to 1070 ppb)

Health Based Limits for Copper

StandardDescriptionLevel
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.300 ppb
National Secondary Drinking Water RegulationsA National Secondary Drinking Water Regulation is a non-enforceable guideline regarding contaminants that may cause cosmetic effects (such as taste, odor, or color). Some states choose to adopt them as enforceable standards. Source: U.S. Environmental Protection Agency. 1000 ppb
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.1300 ppb
EPA Human Health Water Quality CriteriaWater quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency.1300 ppb

Violation Summary for Copper in Michigan

There are no violations reported for this contaminant in Michigan