The Power of Information

National Drinking Water Database

Pomona - City, Water Dept. Utilities - Los Angeles, CA

Serves 156,500 people


Strontium-90 is a radioactive pollutant from nuclear fallout and possibly weapons and power production.
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
61 days
Tests ConductedNumber of individual tests done for this contaminant
113 tests

Testing Summary

Health Limit
Legal Limit

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Strontium-90Strontium-90 is a radioactive pollutant from nuclear fallout and possibly weapons and power production.0.16 pCi/L
1.2 pCi/L
NoLegal at any levelThis is the Federal Limit. State Limits may be lower.
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 Strontium-90

Health Based Limits for Strontium-90

There are no health based standards that EWG is using for this chemical

Testing Results

Testing DateAverage
Samples taken that dayNumber of Non-DetectsRange of Results
2008-09-050.02 pCi/L100.02 pCi/L
2007-01-230 pCi/L220 pCi/L
2006-10-260 pCi/L330 pCi/L
2006-10-250 pCi/L220 pCi/L
2006-08-300 pCi/L330 pCi/L
2006-08-240 pCi/L110 pCi/L
2006-08-080 pCi/L110 pCi/L
2006-07-190.25 pCi/L100.25 pCi/L
2006-06-200 pCi/L110 pCi/L
2006-06-130 pCi/L220 pCi/L
2006-06-010 pCi/L220 pCi/L
2006-05-090.45 pCi/L100.45 pCi/L
2006-04-190.08 pCi/L850 to 0.4 pCi/L
2006-04-050 pCi/L330 pCi/L
2006-04-040.02 pCi/L100.02 pCi/L
2006-03-080.08 pCi/L20<0.01 to 0.16 pCi/L
2006-03-010.28 pCi/L100.28 pCi/L
2006-02-270 pCi/L110 pCi/L
2006-02-230.34 pCi/L200.28 to 0.39 pCi/L
2006-02-220.22 pCi/L200.08 to 0.35 pCi/L
2006-02-150.08 pCi/L100.08 pCi/L
2006-02-090.35 pCi/L310 to 0.95 pCi/L
2006-02-070.19 pCi/L300.08 to 0.31 pCi/L
2006-02-010.2 pCi/L100.2 pCi/L
2006-01-190.17 pCi/L100.17 pCi/L
2006-01-110.07 pCi/L300.04 to 0.1 pCi/L
2006-01-050.54 pCi/L400.15 to 1.1 pCi/L
2006-01-040.03 pCi/L100.03 pCi/L
2005-12-130.65 pCi/L410 to 1.11 pCi/L
2005-11-290.07 pCi/L100.07 pCi/L
2005-11-220 pCi/L330 pCi/L
2005-11-080.78 pCi/L200.36 to 1.19 pCi/L
2005-11-020.5 pCi/L100.5 pCi/L
2005-11-011.07 pCi/L101.07 pCi/L
2005-10-271.2 pCi/L101.2 pCi/L
2005-10-260 pCi/L110 pCi/L
2005-10-200 pCi/L220 pCi/L
2005-10-190.03 pCi/L200.03 pCi/L
2005-10-120 pCi/L110 pCi/L
2005-10-110.08 pCi/L200.05 to 0.1 pCi/L
2005-10-070 pCi/L110 pCi/L
2005-10-050 pCi/L220 pCi/L
2005-10-040 pCi/L110 pCi/L
2005-09-270.26 pCi/L210 to 0.53 pCi/L
2005-09-210 pCi/L110 pCi/L
2005-09-080 pCi/L110 pCi/L
2005-08-250.04 pCi/L100.04 pCi/L
2005-08-170.34 pCi/L200.12 to 0.56 pCi/L
2005-08-160 pCi/L110 pCi/L
2005-08-120.09 pCi/L100.09 pCi/L
2005-08-110.13 pCi/L300.09 to 0.21 pCi/L
2005-08-100 pCi/L330 pCi/L
2005-08-090.79 pCi/L100.79 pCi/L
2005-08-030.07 pCi/L310 to 0.11 pCi/L
2005-07-280.06 pCi/L420 to 0.2 pCi/L
2005-07-250.15 pCi/L100.15 pCi/L
2005-07-200 pCi/L110 pCi/L
2005-06-160 pCi/L110 pCi/L
2005-06-080.11 pCi/L100.11 pCi/L
2005-05-260 pCi/L330 pCi/L
2005-05-040.19 pCi/L100.19 pCi/L