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EWG's Tap Water Database — 2019 UPDATE

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Perfluorononanoic acid (PFNA)

Lockport

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
2014ND120ND
2015N/A00N/A
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
2014-03-112993431ND
2014-03-112993433ND
2014-03-112993468ND
2014-03-112993537ND
2014-03-112993446ND
2014-03-112993435ND
2014-09-0927043601ND
2014-09-0927043401ND
2014-09-0927043701ND
2014-09-0927043801ND
2014-09-0927043901ND
2014-09-0927043501ND