The Power of Information

National Drinking Water Database

NJ American Water Company Utilities - Newark, NJ

Serves 217,230 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
4 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
25 days
Tests ConductedNumber of individual tests done for this contaminant
52 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.209.45 ppb
565 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
2006-07-31506.67 ppb3070 to 730 ppb
2006-07-28183.33 ppb3090 to 280 ppb
2006-07-27220 ppb10220 ppb
2006-07-25110 ppb10110 ppb
2006-07-2078 ppb5030 to 130 ppb
2006-07-19322.5 ppb40110 to 730 ppb
2006-07-17175 ppb2050 to 300 ppb
2006-07-1350 ppb2050 ppb
2006-07-11330 ppb20190 to 470 ppb
2006-07-10190 ppb40130 to 260 ppb
2006-07-06250 ppb10250 ppb
2006-07-03250 ppb10250 ppb
2006-06-29565 ppb20390 to 740 ppb
2006-06-2870 ppb1070 ppb
2006-06-27193.33 ppb3060 to 390 ppb
2006-06-23205 ppb20100 to 310 ppb
2006-06-2290 ppb1090 ppb
2006-06-20170 ppb10170 ppb
2006-06-15110 ppb2050 to 170 ppb
2006-06-14210 ppb10210 ppb
2006-06-13215 ppb20140 to 290 ppb
2006-06-11210 ppb10210 ppb
2006-06-09247.5 ppb4060 to 700 ppb
2006-06-0895 ppb2090 to 100 ppb
2006-06-06190 ppb10190 ppb