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National Drinking Water Database

Copper in Kentucky

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 Kentucky

375 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
1Sedalia Water District
Sedalia, KY
4656 of 6888.67 ppb
(90 to 4140 ppb)
2Dry Ridge Water Works Commission
Dry Ridge, KY
2,6303 of 3686.63 ppb
(161 to 1490 ppb)
3Doe Valley Utilities Inc
Brandenburg, KY
2,3433 of 3518.37 ppb
(334 to 717.6 ppb)
4West Laurel Water Assoc Inc
London, KY
15,66534 of 35489.33 ppb
(0 to 2080 ppb)
5East Laurel Water District
London, KY
16,3388 of 8450.53 ppb
(76.52 to 1350 ppb)
6Rockcastle Co Water Assoc
Mt Vernon, KY
1,8904 of 5377.67 ppb
(0 to 1550 ppb)
7Sharpsburg Water District
Sharpsburg, KY
5,0094 of 4285.82 ppb
(66.67 to 710 ppb)
8Harrison Co Water Assoc
Cynthiana, KY
17,6654 of 4282.92 ppb
(10 to 1020 ppb)
9East Pendleton Water District
Falmouth, KY
5,2578 of 8280 ppb
(173.33 to 410 ppb)
10Pendleton Co Water District #1/South
Falmouth, KY
4,1256 of 6278.02 ppb
(60 to 538.33 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 Kentucky

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in Kentucky since 2004

Violation TypeNumber of Violations
Failure to monitor regularly6