The Power of Information

National Drinking Water Database


City of Riverside Public Utilities Utilities - Riverside, CA


Serves 280,832 people

Combined Uranium (mg/L)

Uranium is a radioactive element commonly found in most rocks; processed uranium ore is used for power generation and weapons manufacture.
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
247 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
247 days
Tests ConductedNumber of individual tests done for this contaminant
248 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Combined Uranium (mg/L)Uranium is a radioactive element commonly found in most rocks; processed uranium ore is used for power generation and weapons manufacture.13.51 ppb
27 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
30 ppb
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 (mg/L)

Health Based Limits for Combined Uranium (mg/L)

StandardDescriptionLevel
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.0 ppb
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.0.5 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.20 ppb
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.30 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2009-07-2814 ppb1014 ppb
2009-07-2215 ppb1015 ppb
2009-07-1412 ppb1012 ppb
2009-07-0713 ppb1013 ppb
2009-06-3015 ppb1015 ppb
2009-06-1617 ppb1017 ppb
2009-06-0918 ppb1018 ppb
2009-06-0213 ppb1013 ppb
2009-05-1915 ppb1015 ppb
2009-04-1414 ppb1014 ppb
2009-04-0212 ppb1012 ppb
2009-03-0317 ppb1017 ppb
2009-02-2425 ppb1025 ppb
2009-02-1726 ppb1026 ppb
2009-02-1026 ppb1026 ppb
2009-02-0327 ppb1027 ppb
2008-12-3018 ppb1018 ppb
2008-12-1616 ppb1016 ppb
2008-12-0916 ppb1016 ppb
2008-11-2621 ppb1021 ppb
2008-11-1817 ppb1017 ppb
2008-11-1215 ppb1015 ppb
2008-11-0419 ppb1019 ppb
2008-10-2818 ppb1018 ppb
2008-10-2217 ppb1017 ppb
2008-10-1418 ppb1018 ppb
2008-10-0718 ppb1018 ppb
2008-09-3018 ppb1018 ppb
2008-09-2316 ppb1016 ppb
2008-09-1615 ppb1015 ppb
2008-09-0917 ppb1017 ppb
2008-09-0219 ppb1019 ppb
2008-08-2615 ppb1015 ppb
2008-08-1915 ppb1015 ppb
2008-08-1217 ppb1017 ppb
2008-07-2918 ppb1018 ppb
2008-07-2218 ppb1018 ppb
2008-07-1518 ppb1018 ppb
2008-07-0820 ppb1020 ppb
2008-07-0117 ppb1017 ppb
2008-06-2420 ppb1020 ppb
2008-06-1716 ppb1016 ppb
2008-06-1019 ppb1019 ppb
2008-06-0321 ppb1021 ppb
2008-05-2719 ppb1019 ppb
2008-05-2022 ppb1022 ppb
2008-05-1315 ppb1015 ppb
2008-05-0617 ppb1017 ppb
2008-04-2912 ppb1012 ppb
2008-04-2214 ppb1014 ppb
2008-04-1513 ppb1013 ppb
2008-04-0815 ppb1015 ppb
2008-04-0116 ppb1016 ppb
2008-03-2517 ppb1017 ppb
2008-03-1815 ppb1015 ppb
2008-03-1116 ppb1016 ppb
2008-03-0413 ppb1013 ppb
2008-02-2613 ppb1013 ppb
2008-02-1915 ppb1015 ppb
2008-02-1214 ppb1014 ppb
2008-02-0515 ppb1015 ppb
2008-01-2915 ppb1015 ppb
2008-01-2214 ppb1014 ppb
2008-01-1513 ppb1013 ppb
2008-01-0819 ppb1019 ppb
2008-01-0217 ppb1017 ppb
2007-12-2618 ppb1018 ppb
2007-12-1816 ppb1016 ppb
2007-11-0611 ppb1011 ppb
2007-10-3014 ppb1014 ppb
2007-10-2315 ppb2015 ppb
2007-10-1612 ppb1012 ppb
2007-10-0915 ppb1015 ppb
2007-10-0213 ppb1013 ppb
2007-09-2512 ppb1012 ppb
2007-09-1813 ppb1013 ppb
2007-09-1114 ppb1014 ppb
2007-09-0414 ppb1014 ppb
2007-08-2814 ppb1014 ppb
2007-08-2114 ppb1014 ppb
2007-08-1414 ppb1014 ppb
2007-08-0711 ppb1011 ppb
2007-07-3114 ppb1014 ppb
2007-07-2416 ppb1016 ppb
2007-07-1716 ppb1016 ppb
2007-07-1016 ppb1016 ppb
2007-07-0316 ppb1016 ppb
2007-06-2616 ppb1016 ppb
2007-06-1916 ppb1016 ppb
2007-06-1214 ppb1014 ppb
2007-06-0517 ppb1017 ppb
2007-05-2914 ppb1014 ppb
2007-05-2214 ppb1014 ppb
2007-05-1514 ppb1014 ppb
2007-05-0813 ppb1013 ppb
2007-05-0112 ppb1012 ppb
2007-04-2411 ppb1011 ppb
2007-04-179 ppb109 ppb
2007-04-105.8 ppb105.8 ppb
2007-04-037.3 ppb107.3 ppb
2007-03-277.9 ppb107.9 ppb
2007-03-209 ppb109 ppb
2007-03-138.8 ppb108.8 ppb
2007-03-068.3 ppb108.3 ppb
2007-02-278.1 ppb108.1 ppb
2007-02-2011 ppb1011 ppb
2007-02-1310 ppb1010 ppb
2007-02-0612 ppb1012 ppb
2007-01-3011 ppb1011 ppb
2007-01-238.2 ppb108.2 ppb
2007-01-1615 ppb1015 ppb
2007-01-0913 ppb1013 ppb
2007-01-0212 ppb1012 ppb
2006-12-2613 ppb1013 ppb
2006-12-1915 ppb1015 ppb
2006-12-1214 ppb1014 ppb
2006-12-0512 ppb1012 ppb
2006-11-2813 ppb1013 ppb
2006-11-2113 ppb1013 ppb
2006-11-1412 ppb1012 ppb
2006-11-0712 ppb1012 ppb
2006-10-3113 ppb1013 ppb
2006-10-2413 ppb1013 ppb
2006-10-1710 ppb1010 ppb
2006-10-1013 ppb1013 ppb
2006-10-0313 ppb1013 ppb
2006-09-2614 ppb1014 ppb
2006-09-1915 ppb1015 ppb
2006-09-1214 ppb1014 ppb
2006-09-0516 ppb1016 ppb
2006-08-2914 ppb1014 ppb
2006-08-2213 ppb1013 ppb
2006-08-1512 ppb1012 ppb
2006-08-0814 ppb1014 ppb
2006-08-0113 ppb1013 ppb
2006-07-2512 ppb1012 ppb
2006-07-188.8 ppb108.8 ppb
2006-07-1310 ppb1010 ppb
2006-07-1112 ppb1012 ppb
2006-07-0411 ppb1011 ppb
2006-06-2712 ppb1012 ppb
2006-06-2012 ppb1012 ppb
2006-06-1311 ppb1011 ppb
2006-06-0610 ppb1010 ppb
2006-05-308.9 ppb108.9 ppb
2006-05-247.6 ppb107.6 ppb
2006-05-238.2 ppb108.2 ppb
2006-05-169.5 ppb109.5 ppb
2006-05-0910 ppb1010 ppb
2006-05-0212 ppb1012 ppb
2006-04-2511 ppb1011 ppb
2006-04-1812 ppb1012 ppb
2006-04-1110 ppb1010 ppb
2006-04-0416 ppb1016 ppb
2006-03-2814 ppb1014 ppb
2006-03-2113 ppb1013 ppb
2006-03-1414 ppb1014 ppb
2006-03-0716 ppb1016 ppb
2006-02-2812 ppb1012 ppb
2006-02-2114 ppb1014 ppb
2006-02-1414 ppb1014 ppb
2006-02-0713 ppb1013 ppb
2006-01-3113 ppb1013 ppb
2006-01-2414 ppb1014 ppb
2006-01-1713 ppb1013 ppb
2006-01-1013 ppb1013 ppb
2006-01-0316 ppb1016 ppb
2005-12-2716 ppb1016 ppb
2005-12-2017 ppb1017 ppb
2005-12-1313 ppb1013 ppb
2005-12-0613 ppb1013 ppb
2005-11-2914 ppb1014 ppb
2005-11-2212 ppb1012 ppb
2005-11-1512 ppb1012 ppb
2005-11-0813 ppb1013 ppb
2005-11-0111 ppb1011 ppb
2005-10-2511 ppb1011 ppb
2005-10-1811 ppb1011 ppb
2005-10-1112 ppb1012 ppb
2005-10-0412 ppb1012 ppb
2005-09-2712 ppb1012 ppb
2005-09-2011 ppb1011 ppb
2005-09-1311 ppb1011 ppb
2005-09-0611 ppb1011 ppb
2005-08-309.7 ppb109.7 ppb
2005-08-2312 ppb1012 ppb
2005-08-1611 ppb1011 ppb
2005-08-0911 ppb1011 ppb
2005-08-0210 ppb1010 ppb
2005-07-2611 ppb1011 ppb
2005-07-1910 ppb1010 ppb
2005-07-1212 ppb1012 ppb
2005-07-0513 ppb1013 ppb
2005-06-2810 ppb1010 ppb
2005-06-2110 ppb1010 ppb
2005-06-1411 ppb1011 ppb
2005-06-0713 ppb1013 ppb
2005-05-318.4 ppb108.4 ppb
2005-05-248 ppb108 ppb
2005-05-1715 ppb1015 ppb
2005-05-1016 ppb1016 ppb
2005-05-0316 ppb1016 ppb
2005-04-2614 ppb1014 ppb
2005-04-1914 ppb1014 ppb
2005-04-1217 ppb1017 ppb
2005-04-0514 ppb1014 ppb
2005-03-2915 ppb1015 ppb
2005-03-2210 ppb1010 ppb
2005-03-159.9 ppb109.9 ppb
2005-03-0812 ppb1012 ppb
2005-03-0113 ppb1013 ppb
2005-02-2214 ppb1014 ppb
2005-02-1513 ppb1013 ppb
2005-02-0811 ppb1011 ppb
2005-02-0110 ppb1010 ppb
2005-01-259.9 ppb109.9 ppb
2005-01-1812 ppb1012 ppb
2005-01-1112 ppb1012 ppb
2005-01-0411 ppb1011 ppb
2004-12-2811 ppb1011 ppb
2004-12-2110 ppb1010 ppb
2004-12-1411 ppb1011 ppb
2004-12-0711 ppb1011 ppb
2004-11-308.5 ppb108.5 ppb
2004-11-237.3 ppb107.3 ppb
2004-11-1611 ppb1011 ppb
2004-11-0916 ppb1016 ppb
2004-11-0216 ppb1016 ppb
2004-10-2617 ppb1017 ppb
2004-10-1915 ppb1015 ppb
2004-10-1213 ppb1013 ppb
2004-10-0512 ppb1012 ppb
2004-09-2814 ppb1014 ppb
2004-09-2113 ppb1013 ppb
2004-09-1414 ppb1014 ppb
2004-09-0714 ppb1014 ppb
2004-08-3114 ppb1014 ppb
2004-08-2714 ppb1014 ppb
2004-08-2411 ppb1011 ppb
2004-08-1712 ppb1012 ppb
2004-08-1010 ppb1010 ppb
2004-08-0310 ppb1010 ppb
2004-07-279.9 ppb109.9 ppb
2004-07-207.8 ppb107.8 ppb
2004-07-148.5 ppb108.5 ppb
2004-07-139 ppb109 ppb
2004-07-067.8 ppb107.8 ppb