Perfluorononanoic acid (PFNA)

Greenlawn WD

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

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2013	ND	19	ND
2014	ND	1	ND
2015	N/A	0	N/A
2016	N/A	0	N/A
2017	N/A	0	N/A
2018	N/A	0	N/A
2019	N/A	0	N/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
2013-06-25	201306260219AM	ND
2013-06-25	201306260215AM	ND
2013-06-25	201306260211AM	ND
2013-06-25	201306260217AM	ND
2013-06-25	201306260213AM	ND
2013-06-26	201306280163AM	ND
2013-06-26	201306280157AM	ND
2013-06-26	201306280161AM	ND
2013-06-26	201306280159AM	ND
2013-06-26	201306280165AM	ND
2013-12-12	201312140122AM	ND
2013-12-12	201312140120AM	ND
2013-12-12	201312140124AM	ND
2013-12-12	201312140116AM	ND
2013-12-12	201312140118AM	ND
2013-12-16	35120399005AM	ND
2013-12-16	35120399007AM	ND
2013-12-16	35120399001AM	ND
2013-12-16	35120399003AM	ND
2014-11-17	35165125001AM	ND