The Power of Information

National Drinking Water Database

Rancho California Water District Utilities - Riverside, CA

Serves 103,414 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
60 days
Tests ConductedNumber of individual tests done for this contaminant
72 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.38.35 ppb
1200 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
2009-03-090 ppb110 ppb
2009-03-040 ppb220 ppb
2009-03-030 ppb110 ppb
2009-02-110 ppb110 ppb
2008-12-030 ppb110 ppb
2008-10-2883 ppb1083 ppb
2008-09-250 ppb110 ppb
2008-08-110 ppb220 ppb
2008-07-080 ppb110 ppb
2008-06-110 ppb110 ppb
2008-06-100 ppb110 ppb
2008-06-050 ppb110 ppb
2008-04-150 ppb110 ppb
2008-04-080 ppb440 ppb
2008-03-040 ppb110 ppb
2008-01-070 ppb110 ppb
2007-08-140 ppb110 ppb
2007-07-030 ppb110 ppb
2007-05-030 ppb110 ppb
2007-05-020 ppb220 ppb
2007-03-070 ppb110 ppb
2007-01-190 ppb110 ppb
2006-12-070 ppb220 ppb
2006-10-120 ppb110 ppb
2006-09-070 ppb110 ppb
2006-09-060 ppb110 ppb
2006-08-070 ppb110 ppb
2006-07-120 ppb110 ppb
2006-06-080 ppb220 ppb
2006-05-120 ppb110 ppb
2006-04-040 ppb110 ppb
2006-03-140 ppb110 ppb
2006-03-090 ppb110 ppb
2006-03-080 ppb110 ppb
2006-03-070 ppb110 ppb
2006-02-140 ppb110 ppb
2005-12-060 ppb110 ppb
2005-11-030 ppb110 ppb
2005-10-180 ppb220 ppb
2005-10-110 ppb110 ppb
2005-10-0582 ppb1082 ppb
2005-08-0954 ppb1054 ppb
2005-07-060 ppb110 ppb
2005-06-220 ppb110 ppb
2005-06-150 ppb110 ppb
2005-06-140 ppb110 ppb
2005-04-140 ppb330 ppb
2005-04-050 ppb110 ppb
2005-03-090 ppb110 ppb
2005-03-020 ppb110 ppb
2005-01-240 ppb110 ppb
2004-11-23620 ppb10620 ppb
2004-09-090 ppb110 ppb
2004-08-111200 ppb101200 ppb
2004-07-070 ppb110 ppb
2004-05-13112 ppb2094 to 130 ppb
2004-05-120 ppb110 ppb
2004-05-110 ppb110 ppb
2004-03-120 ppb110 ppb
2004-01-13150 ppb10150 ppb