The Power of Information

National Drinking Water Database


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


Serves 69,300 people

Alpha particle activity

Alpha particles are a form of radiation released from mining waste pollutants and natural sources.
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
105 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
125 days
Tests ConductedNumber of individual tests done for this contaminant
218 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Alpha particle activityAlpha particles are a form of radiation released from mining waste pollutants and natural sources.4.07 pCi/L
12 pCi/L
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 pCi/L
No
15 pCi/L
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 Alpha particle activity

Health Based Limits for Alpha particle activity

StandardDescriptionLevel
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.0 pCi/L
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.15 pCi/L

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2008-12-164.07 pCi/L303.4 to 4.6 pCi/L
2008-12-117.9 pCi/L107.9 pCi/L
2008-12-108.7 pCi/L108.7 pCi/L
2008-12-096.6 pCi/L106.6 pCi/L
2008-12-085.7 pCi/L105.7 pCi/L
2008-12-044.9 pCi/L104.9 pCi/L
2008-12-035.5 pCi/L105.5 pCi/L
2008-11-197.7 pCi/L206.1 to 9.3 pCi/L
2008-11-180 pCi/L110 pCi/L
2008-11-174.8 pCi/L104.8 pCi/L
2008-11-135.15 pCi/L205.1 to 5.2 pCi/L
2008-11-033.2 pCi/L103.2 pCi/L
2008-10-301.9 pCi/L210 to 3.8 pCi/L
2008-10-299.2 pCi/L206.4 to 12 pCi/L
2008-10-283.8 pCi/L103.8 pCi/L
2008-03-316.6 pCi/L106.6 pCi/L
2008-03-256.2 pCi/L106.2 pCi/L
2007-06-260 pCi/L110 pCi/L
2007-03-205.2 pCi/L105.2 pCi/L
2007-02-140 pCi/L110 pCi/L
2007-02-073.8 pCi/L103.8 pCi/L
2007-02-063.8 pCi/L103.8 pCi/L
2007-01-220 pCi/L110 pCi/L
2006-11-212.05 pCi/L210 to 4.1 pCi/L
2006-11-091.75 pCi/L210 to 3.5 pCi/L
2006-11-070 pCi/L110 pCi/L
2006-11-015.35 pCi/L203.5 to 7.2 pCi/L
2006-10-310 pCi/L220 pCi/L
2006-10-304.2 pCi/L204.2 pCi/L
2006-10-243.5 pCi/L203.2 to 3.8 pCi/L
2006-10-184.55 pCi/L210 to 9.1 pCi/L
2006-10-168.4 pCi/L108.4 pCi/L
2006-10-123.95 pCi/L203.9 to 4 pCi/L
2006-10-111.95 pCi/L210 to 3.9 pCi/L
2006-10-102.75 pCi/L210 to 5.5 pCi/L
2006-10-053.6 pCi/L103.6 pCi/L
2006-10-040 pCi/L220 pCi/L
2006-09-183.2 pCi/L210 to 6.4 pCi/L
2006-09-132 pCi/L210 to 4 pCi/L
2006-09-122.4 pCi/L210 to 4.8 pCi/L
2006-08-313.1 pCi/L310 to 6.1 pCi/L
2006-08-291.8 pCi/L420 to 3.8 pCi/L
2006-08-284.45 pCi/L203.6 to 5.3 pCi/L
2006-08-230 pCi/L110 pCi/L
2006-08-222.05 pCi/L210 to 4.1 pCi/L
2006-08-211.75 pCi/L210 to 3.5 pCi/L
2006-08-160 pCi/L220 pCi/L
2006-08-153.08 pCi/L420 to 8.5 pCi/L
2006-06-301.44 pCi/L101.44 pCi/L
2006-06-294.16 pCi/L104.16 pCi/L
2006-06-286.03 pCi/L106.03 pCi/L
2006-06-272.87 pCi/L102.87 pCi/L
2006-06-217.33 pCi/L107.33 pCi/L
2006-06-084.99 pCi/L301.22 to 10.4 pCi/L
2006-06-058.99 pCi/L108.99 pCi/L
2006-06-013.69 pCi/L203.16 to 4.22 pCi/L
2006-05-154.16 pCi/L203.7 to 4.61 pCi/L
2006-05-096.19 pCi/L205.72 to 6.66 pCi/L
2006-04-204.23 pCi/L202.77 to 5.68 pCi/L
2006-04-183.62 pCi/L400.92 to 6.82 pCi/L
2006-04-053.1 pCi/L103.1 pCi/L
2006-03-294.75 pCi/L300.88 to 7.19 pCi/L
2006-03-284.78 pCi/L501.21 to 8.31 pCi/L
2006-03-275.93 pCi/L304.53 to 7.26 pCi/L
2006-03-230.79 pCi/L200.59 to 0.98 pCi/L
2006-03-225 pCi/L403.28 to 7.44 pCi/L
2006-03-164.41 pCi/L200.36 to 8.46 pCi/L
2006-03-152.57 pCi/L301.28 to 4.1 pCi/L
2006-03-144.2 pCi/L201.45 to 6.95 pCi/L
2005-11-284.33 pCi/L104.33 pCi/L
2005-11-211.53 pCi/L101.53 pCi/L
2005-11-173.05 pCi/L103.05 pCi/L
2005-11-163.02 pCi/L401.78 to 3.89 pCi/L
2005-11-153.35 pCi/L301.99 to 4.67 pCi/L
2005-11-144.86 pCi/L204.41 to 5.3 pCi/L
2005-11-111.55 pCi/L201.16 to 1.94 pCi/L
2005-11-104.45 pCi/L302.74 to 7.76 pCi/L
2005-11-093.11 pCi/L301.55 to 5.41 pCi/L
2005-11-083.04 pCi/L301.49 to 4.28 pCi/L
2005-11-076.59 pCi/L202.77 to 10.4 pCi/L
2005-08-316.6 pCi/L106.6 pCi/L
2005-02-027.45 pCi/L207.2 to 7.7 pCi/L
2004-11-023.1 pCi/L103.1 pCi/L
2004-07-158.6 pCi/L108.6 pCi/L
2004-07-080 pCi/L220 pCi/L
2004-06-165.6 pCi/L105.6 pCi/L
2004-06-158.2 pCi/L305.8 to 13 pCi/L
2004-06-104.55 pCi/L210 to 9.1 pCi/L
2004-06-080 pCi/L110 pCi/L
2004-06-037.6 pCi/L107.6 pCi/L
2004-06-020 pCi/L110 pCi/L
2004-05-250 pCi/L110 pCi/L
2004-05-190 pCi/L220 pCi/L
2004-05-123.35 pCi/L203 to 3.7 pCi/L
2004-05-115.4 pCi/L105.4 pCi/L
2004-05-060 pCi/L110 pCi/L
2004-04-270 pCi/L110 pCi/L
2004-04-262.87 pCi/L310 to 4.6 pCi/L
2004-04-193.2 pCi/L103.2 pCi/L
2004-04-130 pCi/L110 pCi/L
2004-04-126.47 pCi/L310 to 16 pCi/L
2004-04-083.55 pCi/L210 to 7.1 pCi/L
2004-04-063 pCi/L210 to 6 pCi/L
2004-04-054.5 pCi/L204.4 to 4.6 pCi/L
2004-03-310 pCi/L110 pCi/L
2004-03-298.19 pCi/L108.19 pCi/L
2004-03-255.53 pCi/L105.53 pCi/L
2004-03-2411.05 pCi/L2011 to 11.1 pCi/L
2004-03-153.3 pCi/L103.3 pCi/L
2004-03-086.13 pCi/L106.13 pCi/L
2004-03-015.73 pCi/L105.73 pCi/L
2004-02-254.64 pCi/L104.64 pCi/L
2004-02-2412 pCi/L1012 pCi/L
2004-02-197.38 pCi/L107.38 pCi/L
2004-02-180 pCi/L220 pCi/L
2004-02-129.98 pCi/L206.25 to 13.7 pCi/L
2004-02-114.44 pCi/L204.19 to 4.68 pCi/L
2004-02-050 pCi/L110 pCi/L
2004-02-0411.2 pCi/L1011.2 pCi/L
2004-01-283.72 pCi/L103.72 pCi/L
2004-01-272.15 pCi/L210 to 4.29 pCi/L
2004-01-1410.84 pCi/L205.37 to 16.3 pCi/L
2004-01-134.58 pCi/L104.58 pCi/L
2004-01-125.68 pCi/L203.44 to 7.91 pCi/L
2004-01-085.93 pCi/L205.12 to 6.74 pCi/L