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EWG's Tap Water Database — 2021 UPDATE

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Perfluorononanoic acid (PFNA)

Passaic Valley Water Commission

Perfluorononanoic acid, otherwise known as PFNA or C9, is a PFC similar in function and use to PFOA. These chemicals were used in the production of non-stick, stain repellent and chemically inert coatings. Click here to read more about perfluorinated chemicals.

MORE ABOUT THIS CONTAMINANT

 

26

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND20ND
2014ND20ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
20180.210 ppt101ND - 2.10 ppt
2019ND120ND

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 perfluorononanoic acid 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.

EPA Maximum Contaminant
Level (MCL) 10 ppt

ppt = parts per trillion

All test results

Date Lab ID Result
2013-07-17201307180604AMND
2013-10-08201310090267AMND
2014-01-07201401080432AMND
2014-04-09201404100758AMND
2018-01-292860711ND
2018-02-212877227ND
2018-03-143890724ND
2018-04-113911895ND
2018-05-093932919ND
2018-07-1139869742.10 ppt
2018-08-084016620ND
2018-09-124054962ND
2018-10-104085692ND
2018-12-124148426ND
2019-01-034164433ND
2019-02-194203258ND
2019-03-114223674ND
2019-04-034247981ND
2019-05-084287967ND
2019-06-054315182ND
2019-07-104349903ND
2019-08-014373677ND
2019-09-114418245ND
2019-10-024443400ND
2019-11-064479133ND
2019-12-044504277ND