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National Drinking Water Database

Copper in Idaho

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 Idaho

12 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
1Tyhee and S and N Estates Water Assn
Pocatello, ID
3001 of 1540 ppb
(540 ppb)
2Mountain Springs Water Corp
Sandpoint, ID
1612 of 2345 ppb
(73 to 617 ppb)
3Jug Mountain Ranch Subdivision
401 of 1278.68 ppb
(278.68 ppb)
4Shilo Ranch Estates
Garden Valley, ID
212 of 2100 ppb
(90 to 110 ppb)
5City of Emida
St Maries, ID
851 of 193 ppb
(93 ppb)
6Goose Creek Trailer Court
New Meadows, ID
261 of 150 ppb
(50 ppb)
7Cottonwood Acres 3 & 5
Idaho Falls, ID
601 of 140 ppb
(40 ppb)
8Mountain View Estates
Pinehurst, ID
251 of 121 ppb
(21 ppb)
9Eagle Water Company Inc
Eagle, ID
9,0001 of 116.15 ppb
(16.15 ppb)
10Linda Vista Mobile Home Park
Eagle, ID
1251 of 215 ppb
(0 to 30 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 Idaho

There are no violations reported for this contaminant in Idaho