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EWG's Tap Water Database — 2019 UPDATE

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Perfluorononanoic acid (PFNA)

Pennsylvania American Royersford

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.

 

12

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
2014N/A00N/A
2015ND120ND
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 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.

ppt = parts per trillion

All test results

Date Lab ID Result
2015-03-0428404001ND
2015-03-0428403901ND
2015-03-0428403601ND
2015-03-0928403801ND
2015-03-1028403701ND
2015-06-1029084101ND
2015-09-1630138301ND
2015-10-1430654301ND
2015-10-1430654201ND
2015-10-1430654001ND
2015-10-2630654101ND
2015-12-0230794001ND