The Power of Information

National Drinking Water Database

Harvel Utilities - Harvel, IL

Serves 213 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
28 days
Tests ConductedNumber of individual tests done for this contaminant
44 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.44.66 ppb
240 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
2008-09-2630.4 ppb540 to 152 ppb
2006-06-300 ppb110 ppb
2006-06-290 ppb110 ppb
2006-06-270 ppb110 ppb
2006-06-26150 ppb10150 ppb
2006-06-23150 ppb10150 ppb
2006-06-220 ppb110 ppb
2006-06-210 ppb220 ppb
2006-06-190 ppb220 ppb
2005-12-3150 ppb210 to 100 ppb
2005-12-300 ppb220 ppb
2005-12-290 ppb220 ppb
2005-12-28130 ppb10130 ppb
2005-12-270 ppb330 ppb
2005-08-220 ppb110 ppb
2005-08-03110 ppb10110 ppb
2005-08-010 ppb110 ppb
2005-07-23240 ppb10240 ppb
2005-07-200 ppb220 ppb
2005-07-1936.67 ppb320 to 110 ppb
2004-10-180 ppb110 ppb
2004-10-08140 ppb10140 ppb
2004-09-260 ppb110 ppb
2004-09-150 ppb110 ppb
2004-09-130 ppb110 ppb
2004-09-11170 ppb10170 ppb
2004-09-1043.33 ppb320 to 130 ppb
2004-08-310 ppb110 ppb