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EWG's Tap Water Database — 2019 UPDATE

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Perfluorononanoic acid (PFNA)

Aqua Pa Uwchlan

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.

 

16

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
2015ND160ND
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
2015-03-25201503280122AMND
2015-03-25201503280124AMND
2015-03-25201503280120AMND
2015-03-25201503270296AMND
2015-03-25201503280171AMND
2015-03-25201503280126AMND
2015-03-25201503280173AMND
2015-06-04201506090623AMND
2015-09-16201509200071AMND
2015-09-16201509200073AMND
2015-09-16201509200069AMND
2015-09-16201509200067AMND
2015-09-16201509180531AMND
2015-09-16201509180535AMND
2015-09-16201509180533AMND
2015-12-11201512150191AMND