Know Your Environment. Protect Your Health.

Uranium

Aberdeen, Town of

Uranium is a known human carcinogen. The federal legal limit for uranium is set at 30 micrograms per liter (corresponding to parts per billion), but utilities can also report uranium in picocuries per liter (pCi/L), which is a measure of radioactivity in water. EWG translated all uranium results to pCi/L using a conversion factor developed by the EPA. With this conversion approach, the limit of 30 ppb corresponds to 20 pCi/L. Drinking water with this much uranium would cause more than 4.6 cancer cases in a population of 100,000. California set a public health goal for uranium of 0.43 pCi/L. Read More.

Multiple forms of uranium can be detected in water, including uranium-234, uranium-235 and uranium-238. Uranium-234 is the most toxic form of uranium for human health.

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND80ND
2020ND40ND
2021ND30ND
2022ND80ND
2023ND20ND

pCi/L = picocuries per liter

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.43 pCi/L

The EWG Health Guideline of 0.43 pCi/L for uranium was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. Three most common uranium isotopes are U-234, U-235 and U-238. All isotopes of uranium are radioactive, and the total radioactivity depends on the ratio of isotopes. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL): 20 pCi/L

pCi/L = picocuries per liter

All test results

Date Lab ID Result
2018-01-228977-012218-E14RND
2018-04-028977-040218-E11RND
2018-04-028977-040218-E14RND
2018-07-168977-071618-E14RND
2018-10-158977-101518-E14RND
2019-04-018977-040119-E14RND
2019-04-018977-040119-E19RND
2019-07-018977-070119-E10RND
2019-07-018977-070119-E13RND
2019-07-018977-070119-E14RND
2019-07-018977-070119-E18RND
2019-10-078977-100719-E14RND
2019-10-218977-102119-E28RND
2020-01-068977-010620-E28RND
2020-01-068977-010620-E14RND
2020-01-068977-010620-E12RND
2020-04-068977-040620-E28RND
2021-01-048977-010421-E12RND
2021-01-048977-010421-E17RND
2021-10-188977-101821-E28RND
2022-01-038977-010322-E03RND
2022-01-038977-010322-E12RND
2022-01-038977-010322-E16RND
2022-01-038977-010322-E28RND
2022-04-048977-040422-E06RND
2022-04-048977-040422-E28RND
2022-07-118977-071122-E28RND
2022-10-038977-100322-E28RND
2023-04-038977-040323-E07RND
2023-04-038977-040323-E19RND
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