The Power of Information

National Drinking Water Database

Kaukauna Utilities Utilities - Appleton, WI

Serves 13,430 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)
1 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
19 days
Tests ConductedNumber of individual tests done for this contaminant
31 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.234.86 ppb
1019 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
2006-12-25111 ppb10111 ppb
2006-12-23640 ppb10640 ppb
2006-12-2151 ppb2041 to 61 ppb
2006-12-20307 ppb2019 to 595 ppb
2006-12-18139.5 ppb20124 to 155 ppb
2006-11-0285 ppb1085 ppb
2006-11-01161 ppb2077 to 245 ppb
2006-10-31165 ppb40129 to 199 ppb
2006-06-05145 ppb10145 ppb
2006-05-2330 ppb1030 ppb
2006-05-19214.5 ppb20192 to 237 ppb
2006-03-1088 ppb1088 ppb
2006-03-091019 ppb101019 ppb
2006-03-0761 ppb1061 ppb
2006-03-0162 ppb1062 ppb
2006-02-28251 ppb20112 to 390 ppb
2006-02-27578 ppb20524 to 632 ppb
2006-02-26167 ppb10167 ppb
2006-02-24187.33 ppb30145 to 236 ppb