The Power of Information

National Drinking Water Database

Monterey Park-City, Water Dept. Utilities - Los Angeles, CA

Serves 57,000 people

Combined Uranium (pCi/L)

Uranium is a radioactive element commonly found in most rocks; processed ore is used for power generation and weapons manufacture.
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
22 days
Tests ConductedNumber of individual tests done for this contaminant
40 tests

Testing Summary

Health Limit
Legal Limit

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Combined Uranium (pCi/L)Uranium is a radioactive element commonly found in most rocks; processed ore is used for power generation and weapons manufacture.4.28 pCi/L
11.7 pCi/L
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 Combined Uranium (pCi/L)

Health Based Limits for Combined Uranium (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
Samples taken that dayNumber of Non-DetectsRange of Results
2007-11-210 pCi/L110 pCi/L
2007-11-208.9 pCi/L108.9 pCi/L
2007-09-200 pCi/L110 pCi/L
2007-06-250 pCi/L110 pCi/L
2007-05-140 pCi/L110 pCi/L
2007-03-290 pCi/L110 pCi/L
2007-02-0710.5 pCi/L1010.5 pCi/L
2006-11-3011.7 pCi/L1011.7 pCi/L
2006-09-264.2 pCi/L104.2 pCi/L
2006-05-115.4 pCi/L203.4 to 7.4 pCi/L
2006-02-233.4 pCi/L103.4 pCi/L
2005-11-076.7 pCi/L203.4 to 10 pCi/L
2005-08-156.1 pCi/L410 to 14 pCi/L
2005-05-160 pCi/L110 pCi/L
2005-05-126 pCi/L310 to 15 pCi/L
2005-02-171.17 pCi/L210 to 2.34 pCi/L
2005-02-146 pCi/L410 to 14 pCi/L
2004-12-0711 pCi/L1011 pCi/L
2004-11-104.5 pCi/L620 to 14 pCi/L
2004-09-152.67 pCi/L310 to 5 pCi/L
2004-06-233 pCi/L103 pCi/L
2004-03-313 pCi/L103 pCi/L