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EWG's Tap Water Database — 2019 UPDATE

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Perfluorononanoic acid (PFNA)

Northampton Bucks County Municipal 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.

 

34

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
2015ND340ND
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
2015-02-1235176428015AMND
2015-02-1235176428003AMND
2015-02-1235176428005AMND
2015-02-1235176428001AMND
2015-02-1235176428017AMND
2015-02-1235176428019AMND
2015-02-1235176428009AMND
2015-02-1235176428007AMND
2015-02-1235176428013AMND
2015-02-1235176428011AMND
2015-02-1835176879003AMND
2015-02-1835176879001AMND
2015-02-1835176879007AMND
2015-02-1835176879009AMND
2015-02-1835176879011AMND
2015-02-1835176879005AMND
2015-05-1235188738001AMND
2015-08-1835204918001AMND
2015-08-1835204918003AMND
2015-08-1835204918023AMND
2015-08-1835204918007AMND
2015-08-1835204918005AMND
2015-08-1835204918009AMND
2015-08-1835204918029AMND
2015-08-1835204918027AMND
2015-08-1835204918025AMND
2015-08-2535204918015AMND
2015-08-2535204918017AMND
2015-08-2535204918011AMND
2015-08-2535204918041AMND
2015-08-2535204918013AMND
2015-08-2535204918021AMND
2015-08-2535204918019AMND
2015-11-1735217754001AMND