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EWG's Tap Water Database — 2021 UPDATE

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Perfluorooctanoic acid (PFOA)

Riverhead WD

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.

MORE ABOUT THIS CONTAMINANT

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND110ND
2014ND110ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppt = parts per trillion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.007 ppt

The EWG Health Guideline of 0.007 ppt for PFOA was proposed by 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. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 4 ppt

ppt = parts per trillion

All test results

Date Lab ID Result
2013-09-18201309200390AMND
2013-09-18201309200392AMND
2013-09-18201309200382AMND
2013-09-18201309200386AMND
2013-09-18201309200388AMND
2013-09-18201309200394AMND
2013-09-18201309200398AMND
2013-09-18201309200384AMND
2013-09-18201309200396AMND
2013-09-20201309240330AMND
2013-09-20201309240328AMND
2014-03-1935131088007AMND
2014-03-1935131088005AMND
2014-03-1935131088001AMND
2014-03-1935131088003AMND
2014-03-2135132089006AMND
2014-03-2135132089005AMND
2014-03-2135132089003AMND
2014-03-2135132089001AMND
2014-03-2635131983003AMND
2014-03-2635131983001AMND
2014-03-2835132127001AMND