The Power of Information

National Drinking Water Database

Meridian Water Dept Utilities - Boise, ID

Serves 46,500 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
9 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)
9 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
12 days
Tests ConductedNumber of individual tests done for this contaminant
22 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.27.75 pCi/L
40 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
2008-05-2838 pCi/L1038 pCi/L
2006-05-1721 pCi/L2021 pCi/L
2006-02-2820.2 pCi/L1020.2 pCi/L
2005-10-1220 pCi/L1020 pCi/L
2005-08-1217 pCi/L1017 pCi/L
2005-06-0837 pCi/L1037 pCi/L
2005-03-1435 pCi/L1035 pCi/L
2005-01-0120 pCi/L1020 pCi/L
2004-12-2040 pCi/L1040 pCi/L
2004-09-0925 pCi/L4017 to 32 pCi/L
2004-06-1429.5 pCi/L4020 to 46 pCi/L
2004-03-0830.25 pCi/L4020 to 40 pCi/L