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EWG's Tap Water Database — 2019 UPDATE

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Perfluorooctanoic acid (PFOA)

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Perfluorooctanoic acid (PFOA) is a member of a group of perfluorinated chemicals used in many consumer products. PFOA and other perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND240ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A

ppt = parts per trillion

State and national drinking water standards and health guidelines

EWG Health Guideline 1 ppt

The EWG Health Guideline of 1 ppt for PFOA was defined by EWG based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water. This health guideline applies to the entire class of PFAS detected in water.

ppt = parts per trillion

All test results

Date Lab ID Result
2014-01-27201401280230AMND
2014-01-27201401280213AMND
2014-04-23201404240446AMND
2014-04-23201404240478AMND
2014-04-23201404240561AMND
2014-04-29201404300466AMND
2014-04-29201404300479AMND
2014-04-29201404300473AMND
2014-04-29201404300778AMND
2014-04-30201405010391AMND
2014-04-30201405010475AMND
2014-04-30201405010395AMND
2014-07-29201407300233AMND
2014-07-29201407300313AMND
2014-10-06201410070313AMND
2014-10-06201410070321AMND
2014-10-07201410080467AMND
2014-10-07201410080463AMND
2014-10-09201410100225AMND
2014-10-09201410100267AMND
2014-10-14201410150227AMND
2014-10-14201410150249AMND
2014-10-15201410160328AMND
2014-10-15201410160378AMND