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National Drinking Water Database

Copper in New Mexico

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 New Mexico

428 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
1Canjilon Water System
Canjilon, NM
4001 of 21679 ppb
(0 to 3358 ppb)
2Rodarte Mdwca
Penasco, NM
752 of 21336 ppb
(1230 to 1442 ppb)
3Canada DE Los Alamos Mdwca
Santa Fe, NM
704 of 51280.67 ppb
(0 to 2466.67 ppb)
4Placitas Mdwca
El Rito, NM
2521 of 1902 ppb
(902 ppb)
5Rutheron Mutual Water Association
Los Ojos, NM
711 of 2876.67 ppb
(0 to 1753.33 ppb)
6Delancy Street Foundation
San Juan Pueblo, NM
1193 of 3835.67 ppb
(487 to 1143 ppb)
7Cordova Mdwca
Cordova, NM
3254 of 4832.5 ppb
(130 to 1900 ppb)
8San Cristobal Mdwca
San Cristobal, NM
1391 of 1718 ppb
(718 ppb)
9Carisbrook, Inc
Raton, NM
456 of 6652.92 ppb
(180 to 1300 ppb)
10Madrid Village Water Co-Op
Madrid, NM
3003 of 3644.6 ppb
(193.81 to 1400 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 New Mexico

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

Violation TypeNumber of Violations
Failure to monitor regularly7
Over maximum contaminant level, Average1