The Power of Information

National Drinking Water Database

Passaic Valley Water Commission Utilities - Paterson, NJ

Serves 314,900 people


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.
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
0 days
Test Days Exceeding Legal LimitsNumber of days in which the samples taken in that day exceed the Maximum Contaminant Level (Depending on the contaminant and its MCL, that may or may not trigger an MCL violation. Some MCLs are based on averages spanning several months to a year)
0 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
40 days
Tests ConductedNumber of individual tests done for this contaminant
419 tests

Testing Summary

Health Limit
Legal Limit

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
CopperCopper is a naturally occuring metal and drinking water contaminant that enters tap water by corrosion of household plumbing systems and erosion of natural deposits.47.1 ppb
221 ppb
300 ppb
1000 ppb
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Health Based and Legal Limits for Copper

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

Testing Results

Testing DateAverage
Samples taken that dayNumber of Non-DetectsRange of Results
2006-09-2830 ppb2020 to 40 ppb
2006-09-2653.33 ppb6030 to 120 ppb
2006-09-256 ppb530 to 20 ppb
2006-09-2420 ppb1020 ppb
2006-09-2330 ppb1030 ppb
2006-09-2210 ppb210 to 20 ppb
2006-09-2118.89 ppb960 to 130 ppb
2006-09-1915 ppb420 to 30 ppb
2006-09-1544.29 ppb3520 to 130 ppb
2006-09-1460 ppb1060 ppb
2006-09-0840.91 ppb3330 to 130 ppb
2006-09-0725 ppb410 to 50 ppb
2006-03-3050.7 ppb1050.7 ppb
2006-03-28110.05 ppb2053.1 to 167 ppb
2006-03-27145 ppb10145 ppb
2006-03-2511.1 ppb1011.1 ppb
2006-03-2456.43 ppb6106.4 to 205 ppb
2006-03-2338.58 ppb4018.2 to 75.2 ppb
2006-03-20127 ppb10127 ppb
2006-03-1754.67 ppb3006.2 to 117 ppb
2006-03-1635.3 ppb308.2 to 59 ppb
2006-02-070 ppb110 ppb
2005-09-2125.7 ppb1025.7 ppb
2005-09-1657.79 ppb4508.4 to 245 ppb
2005-09-14221 ppb10221 ppb
2005-09-0956.68 ppb6009.3 to 333 ppb
2005-09-0863 ppb1063 ppb
2005-05-090 ppb110 ppb
2004-09-3048 ppb2044 to 52 ppb
2004-09-2714 ppb1014 ppb
2004-09-24108 ppb2098 to 118 ppb
2004-09-2372 ppb1072 ppb
2004-09-2239.5 ppb2026 to 53 ppb
2004-09-210 ppb110 ppb
2004-09-1729.78 ppb910 to 46 ppb
2004-09-1644.24 ppb2540 to 187 ppb
2004-09-1538.75 ppb8017 to 81 ppb
2004-09-1456.1 ppb4240 to 195 ppb
2004-09-1327.25 ppb810 to 39 ppb
2004-05-050 ppb110 ppb