The Power of Information

National Drinking Water Database


Artesian Water Company Utilities - Wilmington, DE


Serves 201,000 people

Aluminum

Aluminum is a metal released from metal refineries and mining operations.
 
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
60 days
Tests ConductedNumber of individual tests done for this contaminant
136 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
AluminumAluminum is a metal released from metal refineries and mining operations.5.83 ppb
121 ppb
No
200 ppb
No
200 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 Aluminum

Health Based Limits for Aluminum

StandardDescriptionLevel
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. 200 ppb
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.600 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2007-08-070 ppb110 ppb
2007-08-020 ppb330 ppb
2007-07-250 ppb110 ppb
2007-06-1371 ppb1071 ppb
2007-05-230 ppb660 ppb
2007-05-160 ppb110 ppb
2007-04-2551.75 ppb430 to 207 ppb
2007-03-200 ppb330 ppb
2007-02-220 ppb330 ppb
2007-02-210 ppb550 ppb
2007-01-090 ppb110 ppb
2007-01-030 ppb110 ppb
2006-01-300 ppb110 ppb
2006-01-280 ppb110 ppb
2006-01-260 ppb110 ppb
2006-01-250 ppb440 ppb
2006-01-240 ppb110 ppb
2006-01-220 ppb110 ppb
2006-01-210 ppb110 ppb
2006-01-180 ppb330 ppb
2006-01-140 ppb220 ppb
2006-01-120 ppb10100 ppb
2006-01-070 ppb440 ppb
2006-01-060 ppb110 ppb
2006-01-050 ppb770 ppb
2005-01-270 ppb110 ppb
2005-01-250 ppb220 ppb
2005-01-230 ppb330 ppb
2005-01-220 ppb110 ppb
2005-01-170 ppb440 ppb
2005-01-160 ppb220 ppb
2005-01-150 ppb220 ppb
2005-01-130 ppb110 ppb
2005-01-030 ppb110 ppb
2004-12-090 ppb110 ppb
2004-07-150 ppb110 ppb
2004-06-150 ppb220 ppb
2004-05-200 ppb220 ppb
2004-04-290 ppb110 ppb
2004-04-270 ppb110 ppb
2004-04-150 ppb110 ppb
2004-03-300 ppb110 ppb
2004-03-240 ppb220 ppb
2004-03-180 ppb220 ppb
2004-02-2526.5 ppb210 to 53 ppb
2004-02-190 ppb110 ppb
2004-02-030 ppb110 ppb
2004-01-300 ppb110 ppb
2004-01-290 ppb110 ppb
2004-01-280 ppb440 ppb
2004-01-270 ppb110 ppb
2004-01-2526.5 ppb210 to 53 ppb
2004-01-240 ppb220 ppb
2004-01-200 ppb660 ppb
2004-01-190 ppb220 ppb
2004-01-180 ppb220 ppb
2004-01-150 ppb440 ppb
2004-01-0953 ppb310 to 106 ppb
2004-01-05121 ppb10121 ppb
2004-01-030 ppb550 ppb