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National Drinking Water Database

Copper in Massachusetts

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 Massachusetts

27 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
1Middleborough Water Supply
Middleborough, MA
20,3862 of 2903.33 ppb
(436.67 to 1370 ppb)
2Seekonk Water District
Seekonk, MA
13,3001 of 1891 ppb
(891 ppb)
3Gosnold Water Dept
Gosnold, MA
6501 of 1887 ppb
(887 ppb)
4Dighton Water District
Dighton, MA
2,7493 of 3857.58 ppb
(580.25 to 1172.5 ppb)
5Wrentham Water Division
West Wrentham, MA
8,6521 of 1797.5 ppb
(797.5 ppb)
6Stoughton Water Division
Stoughton, MA
27,1491 of 1625 ppb
(625 ppb)
7Orleans Water Department
Orleans, MA
20,9371 of 1480 ppb
(480 ppb)
8North Attleboro Water Dept
North Attleborough, MA
26,0001 of 1447.5 ppb
(447.5 ppb)
9Easton Water Div
Easton, MA
22,9041 of 1390 ppb
(390 ppb)
10Oak Bluffs Water District
Oak Bluffs, MA
30,0001 of 1385 ppb
(385 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 Massachusetts

There are no violations reported for this contaminant in Massachusetts