The Power of Information

National Drinking Water Database

City of Fresno Water Division Utilities - Fresno, CA

Serves 390,350 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
2 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)
2 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
51 days
Tests ConductedNumber of individual tests done for this contaminant
231 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.6.62 pCi/L
21.5 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
2008-01-1512 pCi/L1012 pCi/L
2008-01-1414 pCi/L1014 pCi/L
2008-01-0421.5 pCi/L2021 to 22 pCi/L
2007-10-3112 pCi/L1012 pCi/L
2007-08-284.3 pCi/L104.3 pCi/L
2007-06-133.23 pCi/L401.7 to 4 pCi/L
2007-06-124.42 pCi/L901 to 12 pCi/L
2007-06-064.86 pCi/L1101.5 to 13 pCi/L
2007-06-051.9 pCi/L101.9 pCi/L
2007-06-047.25 pCi/L203.5 to 11 pCi/L
2007-06-015.5 pCi/L402.3 to 13 pCi/L
2007-05-3111 pCi/L1011 pCi/L
2007-05-302.13 pCi/L301.3 to 3 pCi/L
2007-05-256.47 pCi/L702.9 to 11 pCi/L
2007-05-246.98 pCi/L802.7 to 13 pCi/L
2007-05-237.45 pCi/L403.8 to 11 pCi/L
2007-05-226.38 pCi/L1003.1 to 16 pCi/L
2007-03-292.9 pCi/L102.9 pCi/L
2007-03-264.2 pCi/L104.2 pCi/L
2007-03-215.48 pCi/L403.6 to 8.7 pCi/L
2007-03-203.6 pCi/L103.6 pCi/L
2007-03-197.13 pCi/L301.7 to 11 pCi/L
2007-03-167.79 pCi/L1003.2 to 16 pCi/L
2007-03-154.97 pCi/L703.1 to 12 pCi/L
2007-03-143.27 pCi/L302.4 to 4.6 pCi/L
2007-03-133.1 pCi/L103.1 pCi/L
2007-03-126.08 pCi/L501.3 to 15 pCi/L
2007-03-095.3 pCi/L105.3 pCi/L
2007-03-086.06 pCi/L501.7 to 11 pCi/L
2007-03-077.1 pCi/L603.8 to 12 pCi/L
2007-03-067.46 pCi/L1002.5 to 15 pCi/L
2006-12-194 pCi/L104 pCi/L
2006-12-184.28 pCi/L502.7 to 8 pCi/L
2006-12-154.92 pCi/L601.8 to 13 pCi/L
2006-12-143.43 pCi/L402.8 to 4.2 pCi/L
2006-12-135.93 pCi/L402.2 to 11 pCi/L
2006-12-126.53 pCi/L304 to 11 pCi/L
2006-12-112.3 pCi/L102.3 pCi/L
2006-12-087.93 pCi/L303.4 to 14 pCi/L
2006-12-068.5 pCi/L505.4 to 14 pCi/L
2006-12-059.88 pCi/L504.8 to 16 pCi/L
2006-12-045.9 pCi/L403.4 to 8 pCi/L
2006-10-172.37 pCi/L102.37 pCi/L
2006-09-285.8 pCi/L910 to 10.9 pCi/L
2006-09-275.36 pCi/L1102.41 to 12.2 pCi/L
2006-09-263.93 pCi/L1210 to 10.6 pCi/L
2006-09-258.92 pCi/L903.96 to 16.9 pCi/L
2006-09-225.13 pCi/L403.29 to 7.24 pCi/L
2006-09-217.28 pCi/L702.47 to 14.7 pCi/L
2006-09-207.94 pCi/L810 to 17.4 pCi/L
2004-01-2921.3 pCi/L1021.3 pCi/L