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EWG's Tap Water Database — 2019 UPDATE

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Uranium

NJ American Water - Western

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.

 

57

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.00 pCi/L121ND - 0.02 pCi/L
2013ND80ND
2014ND200ND
2015ND70ND
2016ND50ND
2017ND50ND

pCi/L = picocuries per liter

State and national drinking water standards and health guidelines

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
2012-01-312584965-66ND
2012-01-312584971-72ND
2012-02-072588100-01ND
2012-03-052602953-54ND
2012-03-142607867,70ND
2012-05-012633769-70ND
2012-05-012633787-88ND
2012-06-06B120078-01ND
2012-08-20B120120-03ND
2012-08-20B120120-06ND
2012-10-1130795410010.02 pCi/L
2012-11-193082287001ND
2013-02-12B130032-01ND
2013-02-19B130033-01ND
2013-05-13B130071-01ND
2013-05-20B130074-01ND
2013-09-04B130122-01ND
2013-09-04B130121-01ND
2013-10-15B130142-01ND
2013-10-15B130141-01ND
2014-01-29B140028-01ND
2014-01-29B140027-01ND
2014-04-29B140075-01ND
2014-04-29B140074-01ND
2014-06-17B140142-01ND
2014-06-17B140139-01ND
2014-06-17B140141-01ND
2014-06-30B140152-01ND
2014-06-30B140151-01ND
2014-06-30B140150-01ND
2014-07-29B140167-01ND
2014-07-29B140168-01ND
2014-07-29B140169-01ND
2014-07-30B140171-01ND
2014-07-30B140170-01ND
2014-07-30B140172-01ND
2014-08-12B140178-01ND
2014-09-22B140211-01ND
2014-11-18B140271-01ND
2014-11-18B140270-01ND
2015-03-11B150052-01ND
2015-05-20B150104-01ND
2015-06-03B150126-01ND
2015-09-09B150167-01ND
2015-09-09B150168-01ND
2015-10-20B150200-01ND
2015-10-20B150198-01ND
2016-02-02B160070-01ND
2016-04-20B160181-01ND
2016-07-13B160323-01ND
2016-08-08B160359-01ND
2016-10-24B160502-01ND
2017-01-18B170023-01ND
2017-06-12B170134-01ND
2017-07-25B170184-01ND
2017-07-25B170182-01ND
2017-10-23B170249-01ND