The Power of Information

National Drinking Water Database

San Gabriel Valley WC - Fontana Utilities - Los Angeles, CA

Serves 102,599 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
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
73 days
Tests ConductedNumber of individual tests done for this contaminant
185 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.5.92 ppb
110 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
2009-03-100 ppb550 ppb
2009-03-040 ppb330 ppb
2009-02-250 ppb110 ppb
2009-02-185.67 ppb640 to 19 ppb
2009-02-041.38 ppb540 to 6.9 ppb
2008-10-297.8 ppb107.8 ppb
2008-10-1511.57 ppb310 to 28 ppb
2008-07-086.77 ppb610 to 14 ppb
2008-06-1114.78 ppb410 to 45 ppb
2008-06-043.1 ppb210 to 6.2 ppb
2008-05-280 ppb330 ppb
2008-05-210 ppb330 ppb
2008-04-095.63 ppb310 to 9.3 ppb
2008-04-020 ppb110 ppb
2008-03-276.4 ppb106.4 ppb
2008-03-195.3 ppb410 to 7.9 ppb
2008-03-127 ppb640 to 24 ppb
2008-03-050 ppb220 ppb
2007-11-130 ppb110 ppb
2007-10-030 ppb330 ppb
2007-09-188.5 ppb206 to 11 ppb
2007-09-120 ppb330 ppb
2007-09-111.7 ppb430 to 6.8 ppb
2007-08-291.5 ppb750 to 5.3 ppb
2007-08-220 ppb330 ppb
2007-07-253.1 ppb210 to 6.2 ppb
2007-06-270 ppb220 ppb
2007-05-178.55 ppb206.1 to 11 ppb
2007-05-160 ppb110 ppb
2007-05-091.29 ppb760 to 9 ppb
2007-04-250 ppb220 ppb
2007-03-2811.5 ppb210 to 23 ppb
2007-03-216.7 ppb106.7 ppb
2007-03-140 ppb110 ppb
2006-12-070 ppb220 ppb
2006-11-274.33 ppb320 to 13 ppb
2006-09-2119.5 ppb210 to 39 ppb
2006-09-191.36 ppb540 to 6.8 ppb
2006-09-180 ppb770 ppb
2006-09-151.68 ppb430 to 6.7 ppb
2006-09-110 ppb110 ppb
2006-07-0519 ppb1019 ppb
2006-06-279.8 ppb109.8 ppb
2006-06-1419.5 ppb2013 to 26 ppb
2006-06-1211.17 ppb630 to 30 ppb
2006-06-0824.25 ppb410 to 41 ppb
2006-03-170 ppb220 ppb
2006-03-15110 ppb10110 ppb
2006-01-2614 ppb1014 ppb
2005-12-270 ppb110 ppb
2005-12-210 ppb220 ppb
2005-12-152.6 ppb320 to 7.8 ppb
2005-12-130 ppb110 ppb
2005-12-050 ppb220 ppb
2005-12-010 ppb330 ppb
2005-11-220 ppb110 ppb
2005-09-020 ppb110 ppb
2005-08-050 ppb110 ppb
2005-07-220 ppb330 ppb
2005-07-200 ppb110 ppb
2005-07-190 ppb220 ppb
2005-05-239.8 ppb109.8 ppb
2005-05-130 ppb110 ppb
2005-03-290 ppb220 ppb
2005-03-1812.05 ppb206.1 to 18 ppb
2005-03-1733.5 ppb2018 to 49 ppb
2004-12-089.4 ppb410 to 26 ppb
2004-08-250 ppb110 ppb
2004-07-156.85 ppb205.3 to 8.4 ppb
2004-06-230 ppb220 ppb
2004-04-290 ppb110 ppb
2004-02-255.2 ppb105.2 ppb
2004-01-260 ppb110 ppb