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National Drinking Water Database


Copper in North Carolina


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 North Carolina

1,652 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)
1Toxaway Point
Lake Toxaway, NC
796 of 62453.68 ppb
(1535.5 to 3430 ppb)
2Town of Ossipee
Elon College, NC
4405 of 91858.58 ppb
(0 to 6300 ppb)
3Cashiers Village
Cashiers, NC
898 of 121724.26 ppb
(0 to 6830 ppb)
4Lake Sheila Water System
Saluda, NC
985 of 51347.4 ppb
(74 to 3850 ppb)
5Northwest Water Supply Inc
Raeford, NC
1,4093 of 41302.48 ppb
(0 to 2482.33 ppb)
6Flat Mountain Estates
Highlands, NC
10914 of 161199.34 ppb
(0 to 3460 ppb)
7Rolling Acres S/D
Raleigh, NC
574 of 81111.25 ppb
(0 to 6530 ppb)
8Pines Rest Home
Louisburg, NC
256 of 61087.13 ppb
(287.2 to 2390 ppb)
9Houston House Rest Home
Union Mills, NC
408 of 81067.52 ppb
(72 to 1951 ppb)
10Jonas Ridge Rest Home
Jonas Ridge, NC
5411 of 121051.89 ppb
(0 to 4532.5 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 North Carolina

There are no violations reported for this contaminant in North Carolina