The Power of Information

National Drinking Water Database

City of Fresno Water Division Utilities - Fresno, CA

Serves 390,350 people


Aluminum is a metal released from metal refineries and mining operations.
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
2 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)
2 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
94 days
Tests ConductedNumber of individual tests done for this contaminant
479 tests

Testing Summary

Health Limit
Legal Limit

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
AluminumAluminum is a metal released from metal refineries and mining operations.17.96 ppb
940 ppb
200 ppb
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

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
Samples taken that dayNumber of Non-DetectsRange of Results
2008-11-210 ppb110 ppb
2008-11-070 ppb110 ppb
2008-11-040 ppb110 ppb
2008-10-010 ppb770 ppb
2008-08-280 ppb110 ppb
2008-08-220 ppb220 ppb
2008-08-200 ppb770 ppb
2008-08-150 ppb990 ppb
2008-08-140 ppb990 ppb
2008-08-120 ppb990 ppb
2008-08-110 ppb990 ppb
2008-08-070 ppb220 ppb
2008-08-050 ppb990 ppb
2008-08-040 ppb550 ppb
2008-08-010 ppb10100 ppb
2008-07-3145 ppb430 to 180 ppb
2008-07-30940 ppb10940 ppb
2008-07-290 ppb660 ppb
2008-07-280 ppb660 ppb
2008-07-250 ppb10100 ppb
2008-07-240 ppb10100 ppb
2008-07-230 ppb990 ppb
2008-07-220 ppb10100 ppb
2008-07-210 ppb10100 ppb
2008-07-180 ppb10100 ppb
2008-07-170 ppb550 ppb
2008-07-160 ppb10100 ppb
2008-07-150 ppb990 ppb
2008-07-140 ppb10100 ppb
2008-07-110 ppb10100 ppb
2008-07-100 ppb10100 ppb
2008-07-090 ppb10100 ppb
2008-07-080 ppb10100 ppb
2007-11-130 ppb110 ppb
2007-10-310 ppb110 ppb
2007-09-280 ppb110 ppb
2007-08-30110 ppb10110 ppb
2007-08-28440 ppb10440 ppb
2007-08-2070 ppb1070 ppb
2007-06-260 ppb220 ppb
2007-04-190 ppb110 ppb
2006-12-220 ppb220 ppb
2006-07-250 ppb110 ppb
2006-07-120 ppb330 ppb
2006-06-270 ppb220 ppb
2006-05-260 ppb110 ppb
2006-05-020 ppb110 ppb
2006-01-040 ppb550 ppb
2006-01-030 ppb110 ppb
2005-09-280 ppb110 ppb
2005-09-130 ppb110 ppb
2005-08-250 ppb110 ppb
2005-08-110 ppb110 ppb
2005-08-030 ppb220 ppb
2005-07-260 ppb110 ppb
2005-07-190 ppb110 ppb
2005-07-130 ppb110 ppb
2005-07-120 ppb110 ppb
2005-07-110 ppb220 ppb
2005-06-290 ppb330 ppb
2005-06-230 ppb10100 ppb
2005-06-220 ppb880 ppb
2005-05-250 ppb110 ppb
2005-05-180 ppb110 ppb
2005-05-130 ppb110 ppb
2005-05-120 ppb110 ppb
2005-05-110 ppb440 ppb
2005-05-100 ppb10100 ppb
2005-05-060 ppb330 ppb
2005-05-040 ppb550 ppb
2005-05-030 ppb660 ppb
2005-05-020 ppb110 ppb
2005-04-290 ppb440 ppb
2005-04-280 ppb440 ppb
2005-04-270 ppb330 ppb
2005-04-260 ppb660 ppb
2005-04-250 ppb220 ppb
2005-04-220 ppb770 ppb
2005-04-214.67 ppb15140 to 70 ppb
2005-04-190 ppb14140 ppb
2005-04-150 ppb880 ppb
2005-04-140 ppb15150 ppb
2005-04-120 ppb880 ppb
2005-04-083.13 ppb16150 to 50 ppb
2005-04-070 ppb15150 ppb
2005-04-0610 ppb15140 to 150 ppb
2005-04-0565.33 ppb15140 to 980 ppb
2005-03-160 ppb110 ppb
2004-10-260 ppb110 ppb
2004-09-140 ppb110 ppb
2004-07-200 ppb220 ppb
2004-05-180 ppb110 ppb
2004-05-070 ppb110 ppb
2004-04-200 ppb220 ppb