The Power of Information

National Drinking Water Database


Combined Uranium (mg/L) in Oklahoma


Uranium is a radioactive element commonly found in most rocks; processed uranium ore is used for power generation and weapons manufacture. [read more]

The Most Polluted Communities in Oklahoma

52 water utilities reported detecting Combined Uranium (mg/L) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Combined Uranium (mg/L) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Piedmont
Piedmont, OK
3,6504 of 442.33 ppb
(42.33 ppb)
2Edmond Pwa - Arcadia
Arcadia, OK
73,87015 of 1518.59 ppb
(1.3 to 67.1 ppb)
3Tonkawa
Tonkawa, OK
3,2994 of 414.4 ppb
(14.4 ppb)
4Mable Bassett Corr. Center Well System
Mcloud, OK
1,0504 of 411.1 ppb
(11.1 ppb)
5Lahoma Pwa
Lahoma, OK
5771 of 110.9 ppb
(10.9 ppb)
6Deer Creek Rural Water Corp
Edmond, OK
3,0006 of 68.76 ppb
(6.1 to 13.39 ppb)
7Keyes Utility Auth.
Keyes, OK
3151 of 18.34 ppb
(8.34 ppb)
8Norman
Norman, OK
89,9526 of 67.12 ppb
(4.5 to 10.3 ppb)
9Purcell
Purcell, OK
5,5714 of 46.5 ppb
(6.5 ppb)
10Dover Public Works Trust Auth
Dover, OK
3674 of 46.2 ppb
(6.2 ppb)

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

Violation Summary for Combined Uranium (mg/L) in Oklahoma

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in Oklahoma since 2004

Violation TypeNumber of Violations
Over maximum contaminant level, Average1