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EWG's Tap Water Database — 2021 UPDATE

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Perfluorononanoic acid (PFNA)

Pawc Pocono District

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND180ND
2014N/A00N/A
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 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
2013-06-0322237101ND
2013-06-0322232501ND
2013-06-0322231701ND
2013-06-0322236901ND
2013-06-0422230601ND
2013-06-0422232101ND
2013-06-0422232301ND
2013-06-0422231901ND
2013-06-0422236701ND
2013-12-0224115201ND
2013-12-0224114801ND
2013-12-0224114001ND
2013-12-0224115001ND
2013-12-0224115401ND
2013-12-0324112901ND
2013-12-0324114201ND
2013-12-0324114601ND
2013-12-0324114401ND