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National Drinking Water Database

Copper in North Dakota

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 Dakota

321 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
1City of Hazen
Hazen, ND
2,45763 of 632142.94 ppb
(190 to 5840 ppb)
2City of Glenburn
Glenburn, ND
37418 of 181452.58 ppb
(20 to 2247.5 ppb)
3City of Cathay
Cathay, ND
5611 of 111144.83 ppb
(190 to 3200 ppb)
4City of Dazey
Dazey, ND
914 of 41123.75 ppb
(965 to 1360 ppb)
5City of Velva
Velva, ND
1,0494 of 41043.67 ppb
(573 to 1720 ppb)
6City of Kulm
Kulm, ND
4224 of 41032 ppb
(560 to 1310 ppb)
7City of Fessenden
Fessenden, ND
6251 of 11014 ppb
(1014 ppb)
8City of Abercrombie
Abercrombie, ND
2962 of 2963 ppb
(510 to 1416 ppb)
9City of Kenmare
Kenmare, ND
1,08129 of 30950.03 ppb
(0 to 2025 ppb)
10City of Sherwood
Sherwood, ND
2552 of 2911 ppb
(706 to 1116 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 North Dakota

There are no violations reported for this contaminant in North Dakota