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National Drinking Water Database

Copper in Illinois

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 Illinois

1,449 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
1Forest Lake Addition
Libertyville, IL
2042 of 21800 ppb
(200 to 3400 ppb)
2Timber Brook Estates
Geneseo, IL
1205 of 51753.53 ppb
(1193.16 to 2300 ppb)
Windsor, IL
1,2007 of 71544.41 ppb
(170 to 3930 ppb)
Bethany, IL
1,3209 of 91175.13 ppb
(807.9 to 1477 ppb)
5Lynwood 3rd Addition
Geneseo, IL
903 of 41162.56 ppb
(0 to 2785.25 ppb)
Camargo, IL
6004 of 41116.5 ppb
(743 to 1598 ppb)
Atlanta, IL
1,64923 of 241039.43 ppb
(0 to 3800 ppb)
Ashkum, IL
72413 of 131027.29 ppb
(428.89 to 1893.75 ppb)
Riverton, IL
4,1015 of 51018.25 ppb
(180 to 1986.67 ppb)
Cooksville, IL
2131 of 11012 ppb
(1012 ppb)

Health Based Limits for Copper

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 Illinois

There are no violations reported for this contaminant in Illinois