The Power of Information

National Drinking Water Database

Redlands City Mud-Water Div Utilities - San Bernardino, CA

Serves 69,300 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
5 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)
5 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
95 days
Tests ConductedNumber of individual tests done for this contaminant
137 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.109.73 ppb
2500 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
2008-12-160 ppb330 ppb
2008-12-1158 ppb1058 ppb
2008-12-100 ppb110 ppb
2008-12-0989 ppb1089 ppb
2008-12-080 ppb110 ppb
2008-12-040 ppb110 ppb
2008-12-030 ppb110 ppb
2008-11-1960 ppb210 to 120 ppb
2008-11-180 ppb110 ppb
2008-11-170 ppb110 ppb
2008-11-130 ppb220 ppb
2008-11-030 ppb110 ppb
2008-10-300 ppb220 ppb
2008-10-290 ppb220 ppb
2008-10-280 ppb110 ppb
2008-03-310 ppb110 ppb
2008-03-2561 ppb1061 ppb
2007-06-260 ppb110 ppb
2005-11-2855 ppb1055 ppb
2005-11-2174 ppb1074 ppb
2005-11-1727.5 ppb210 to 55 ppb
2005-11-1624.33 ppb320 to 73 ppb
2005-11-15566.67 ppb320 to 1700 ppb
2005-11-140 ppb220 ppb
2005-11-110 ppb220 ppb
2005-11-1045.33 ppb310 to 70 ppb
2005-11-090 ppb330 ppb
2005-11-080 ppb330 ppb
2005-08-3190 ppb1090 ppb
2005-02-020 ppb220 ppb
2005-01-240 ppb330 ppb
2004-09-200 ppb330 ppb
2004-07-21100 ppb10100 ppb
2004-07-19110 ppb10110 ppb
2004-07-14100 ppb10100 ppb
2004-07-12110 ppb10110 ppb
2004-07-07120 ppb10120 ppb
2004-07-06120 ppb10120 ppb
2004-06-30120 ppb10120 ppb
2004-06-28190 ppb10190 ppb
2004-06-23130 ppb10130 ppb
2004-06-21120 ppb10120 ppb
2004-06-170 ppb110 ppb
2004-06-16140 ppb10140 ppb
2004-06-14160 ppb10160 ppb
2004-06-10120 ppb10120 ppb
2004-06-07110 ppb10110 ppb
2004-06-0266 ppb1066 ppb
2004-06-01100 ppb10100 ppb
2004-05-26110 ppb10110 ppb
2004-05-2498 ppb1098 ppb
2004-05-1982 ppb1082 ppb
2004-05-1788 ppb1088 ppb
2004-05-1285 ppb1085 ppb
2004-05-1096 ppb1096 ppb
2004-05-06120 ppb10120 ppb
2004-05-03130 ppb10130 ppb
2004-04-28110 ppb10110 ppb
2004-04-26110 ppb10110 ppb
2004-04-2173 ppb1073 ppb
2004-04-1979 ppb1079 ppb
2004-04-1479 ppb1079 ppb
2004-04-1275 ppb210 to 150 ppb
2004-04-0786 ppb1086 ppb
2004-04-05110 ppb10110 ppb
2004-03-3145 ppb210 to 90 ppb
2004-03-2943 ppb210 to 86 ppb
2004-03-250 ppb110 ppb
2004-03-2443.33 ppb320 to 130 ppb
2004-03-22150 ppb10150 ppb
2004-03-17130 ppb10130 ppb
2004-03-1550 ppb210 to 100 ppb
2004-03-10180 ppb10180 ppb
2004-03-08710 ppb10710 ppb
2004-03-010 ppb110 ppb
2004-02-2565 ppb1065 ppb
2004-02-242500 ppb102500 ppb
2004-02-190 ppb110 ppb
2004-02-1836.67 ppb320 to 110 ppb
2004-02-17100 ppb10100 ppb
2004-02-1270 ppb2069 to 71 ppb
2004-02-11300 ppb3090 to 520 ppb
2004-02-0980 ppb1080 ppb
2004-02-050 ppb110 ppb
2004-02-040 ppb110 ppb
2004-02-02120 ppb10120 ppb
2004-01-2865 ppb210 to 130 ppb
2004-01-270 ppb220 ppb
2004-01-26120 ppb10120 ppb
2004-01-22140 ppb10140 ppb
2004-01-20130 ppb10130 ppb
2004-01-1466.67 ppb310 to 100 ppb
2004-01-13650 ppb10650 ppb
2004-01-120 ppb220 ppb
2004-01-0832 ppb320 to 96 ppb