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EWG's Tap Water Database — 2021 UPDATE

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Perfluorononanoic acid (PFNA)

City of Tempe

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.

MORE ABOUT THIS CONTAMINANT

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND120ND
2014ND120ND
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
2013-07-16201307160353AMND
2013-07-16201307160357AMND
2013-07-16201307160355AMND
2013-07-16201307160361AMND
2013-07-16201307160363AMND
2013-07-16201307160359AMND
2013-07-17201307170524AMND
2013-07-17201307170526AMND
2013-07-17201307170522AMND
2013-07-31201307310417AMND
2013-10-22201310220315AMND
2013-10-22201310220313AMND
2014-01-02201401020139AMND
2014-01-14201401140317AMND
2014-01-14201401140337AMND
2014-01-14201401140313AMND
2014-01-14201401140309AMND
2014-01-14201401140311AMND
2014-01-14201401140307AMND
2014-01-14201401140315AMND
2014-01-15201401150506AMND
2014-01-15201401150504AMND
2014-04-23201404230516AMND
2014-04-28201404300409AMND