Perfluorononanoic acid (PFNA)

City of Vancouver

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	18	ND
2014	N/A	0	N/A
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
2013-05-28	201305290223AM	ND
2013-05-28	201305290255AM	ND
2013-05-28	201305290241AM	ND
2013-05-28	201305290221AM	ND
2013-05-28	201305290239AM	ND
2013-05-28	201305290226AM	ND
2013-05-28	201305290260AM	ND
2013-05-28	201305290217AM	ND
2013-06-17	201306180198AM	ND
2013-11-19	201311200327AM	ND
2013-11-19	201311200341AM	ND
2013-11-19	201311200323AM	ND
2013-11-19	201311200401AM	ND
2013-11-19	201311200397AM	ND
2013-11-19	201311200369AM	ND
2013-11-19	201311200343AM	ND
2013-11-19	201311200527AM	ND
2013-11-19	201311200325AM	ND