The Power of Information

National Drinking Water Database

Combined Uranium (mg/L) in Idaho

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 Idaho

16 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
1Meridian Heights Wsa
Boise, ID
7901 of 156 ppb
(56 ppb)
2Desert View Estates Water Corp
Kuna, ID
6501 of 149 ppb
(49 ppb)
3Sunlight Terrace
Middleton, ID
2341 of 141 ppb
(41 ppb)
4Paradise Estates Water Corp
Garden City, ID
2901 of 133 ppb
(33 ppb)
261 of 131 ppb
(31 ppb)
6Belmont Heights
1901 of 131 ppb
(31 ppb)
7Riverside Trailer Court
Twin Falls, ID
351 of 116 ppb
(16 ppb)
8Idaho State School and Hospital
Nampa, ID
4851 of 116 ppb
(16 ppb)
9City of Kuna
Kuna, ID
14,5001 of 110.5 ppb
(10.5 ppb)
10Sunset Mobile Home Park
Twin Falls, ID
371 of 14 ppb
(4 ppb)

Health Based Limits for Combined Uranium (mg/L)

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 Idaho

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

Violation TypeNumber of Violations
Over maximum contaminant level, Average116
Failure to monitor regularly56
Over maximum contaminant level, Single Sample13