The Power of Information

National Drinking Water Database

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

Serves 156,500 people


Tritium is a pollutant from commercial nuclear reactors, research reactors and government weapons production plants.
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
68 days
Tests ConductedNumber of individual tests done for this contaminant
124 tests

Testing Summary

Health Limit
Legal Limit

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
TritiumTritium is a pollutant from commercial nuclear reactors, research reactors and government weapons production plants.160.9 pCi/L
627.67 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 Tritium

Health Based Limits for Tritium

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
2008-09-0598.3 pCi/L1098.3 pCi/L
2007-01-2332.05 pCi/L2020.6 to 43.5 pCi/L
2007-01-2251.87 pCi/L3020.6 to 77.8 pCi/L
2006-10-2652.63 pCi/L3013.7 to 80.1 pCi/L
2006-10-2577.8 pCi/L2059.5 to 96.1 pCi/L
2006-08-30111.73 pCi/L3069.2 to 155 pCi/L
2006-08-2833.5 pCi/L1033.5 pCi/L
2006-08-09233 pCi/L10233 pCi/L
2006-07-19214 pCi/L10214 pCi/L
2006-06-2090.2 pCi/L1090.2 pCi/L
2006-06-13101.75 pCi/L2098.5 to 105 pCi/L
2006-06-0872.35 pCi/L2060.8 to 83.9 pCi/L
2006-06-010 pCi/L220 pCi/L
2006-05-1071.3 pCi/L1071.3 pCi/L
2006-05-0973.33 pCi/L308.4 to 199 pCi/L
2006-05-0344 pCi/L1044 pCi/L
2006-05-0210.5 pCi/L1010.5 pCi/L
2006-04-1965.57 pCi/L7027.3 to 134 pCi/L
2006-04-1873.4 pCi/L1073.4 pCi/L
2006-04-0538.47 pCi/L3014.7 to 73.4 pCi/L
2006-04-04122 pCi/L10122 pCi/L
2006-03-232.1 pCi/L102.1 pCi/L
2006-03-0871.1 pCi/L204.2 to 138 pCi/L
2006-03-0175.5 pCi/L1075.5 pCi/L
2006-02-27214 pCi/L10214 pCi/L
2006-02-23113.35 pCi/L2079.7 to 147 pCi/L
2006-02-2230.4 pCi/L2010.5 to 50.3 pCi/L
2006-02-15203 pCi/L10203 pCi/L
2006-02-0985.8 pCi/L3016.5 to 144 pCi/L
2006-02-0747.4 pCi/L3010.3 to 101 pCi/L
2006-02-01289 pCi/L10289 pCi/L
2006-01-19140 pCi/L10140 pCi/L
2006-01-11121 pCi/L3062 to 204 pCi/L
2006-01-0532.98 pCi/L4026.8 to 37.1 pCi/L
2006-01-04115 pCi/L10115 pCi/L
2005-12-13401 pCi/L40287 to 625 pCi/L
2005-11-29507 pCi/L10507 pCi/L
2005-11-22627.67 pCi/L30577 to 710 pCi/L
2005-11-08342 pCi/L20283 to 401 pCi/L
2005-11-02426 pCi/L10426 pCi/L
2005-11-01331 pCi/L10331 pCi/L
2005-10-27246 pCi/L10246 pCi/L
2005-10-26460 pCi/L10460 pCi/L
2005-10-20369.5 pCi/L20272 to 467 pCi/L
2005-10-19215 pCi/L210 to 430 pCi/L
2005-10-12596 pCi/L10596 pCi/L
2005-10-11397.5 pCi/L20346 to 449 pCi/L
2005-10-07452 pCi/L10452 pCi/L
2005-10-05480 pCi/L20478 to 482 pCi/L
2005-10-04460 pCi/L10460 pCi/L
2005-09-270 pCi/L220 pCi/L
2005-09-217.35 pCi/L107.35 pCi/L
2005-09-0858.8 pCi/L1058.8 pCi/L
2005-08-25147 pCi/L10147 pCi/L
2005-08-171.84 pCi/L210 to 3.68 pCi/L
2005-08-160 pCi/L110 pCi/L
2005-08-120 pCi/L110 pCi/L
2005-08-110 pCi/L330 pCi/L
2005-08-108.57 pCi/L320 to 25.7 pCi/L
2005-08-090 pCi/L110 pCi/L
2005-08-034.9 pCi/L320 to 14.7 pCi/L
2005-07-280 pCi/L440 pCi/L
2005-07-250 pCi/L110 pCi/L
2005-07-200 pCi/L110 pCi/L
2005-06-16195 pCi/L10195 pCi/L
2005-06-08305 pCi/L10305 pCi/L
2005-05-26351.67 pCi/L30346 to 360 pCi/L
2005-05-04342 pCi/L10342 pCi/L