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EWG's Tap Water Database — 2021 UPDATE

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Perfluorononanoic acid (PFNA)

Western Virginia Water Authority

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

 

41

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND360ND
2015ND50ND
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 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
2014-04-0935133733001AMND
2014-04-1435134288003AMND
2014-04-1435134288005AMND
2014-04-14351342880011AMND
2014-04-1535134430007AMND
2014-04-1535134430005AMND
2014-04-1535134430003AMND
2014-04-1535134430001AMND
2014-04-1635134685001AMND
2014-04-1635134685003AMND
2014-04-2135135129003AMND
2014-04-2135135129001AMND
2014-04-2235135246001AMND
2014-04-2235135246003AMND
2014-04-2335135566003AMND
2014-04-2335135566001AMND
2014-07-2235147500001AMND
2014-07-2235147500003AMND
2014-07-2335147678001AMND
2014-07-2935148388001AMND
2014-10-2135160675001AMND
2014-10-2135160675003AMND
2014-10-2135160675005AMND
2014-10-2235160822007AMND
2014-10-2235160822005AMND
2014-10-2235160822003AMND
2014-10-2235160822001AMND
2014-10-2735161412005AMND
2014-10-2735161412001AMND
2014-10-2735161412003AMND
2014-10-2935161806003AMND
2014-10-2935161806005AMND
2014-10-2935161806001AMND
2014-10-2935161806007AMND
2014-10-2935161806009AMND
2014-11-2435165509001AMND
2015-01-1435171716001AMND
2015-01-2635173052001AMND
2015-01-2635173052003AMND
2015-01-2835173425001AMND
2015-12-1735222266001AMND