Perfluorononanoic acid (PFNA)

City of Lancaster

NOTE: City of Lancaster purchases water from Lancaster County Water and Sewer District which is required to test for perfluorononanoic acid (pfna). Sample information shown below was taken by Lancaster County Water and Sewer District.

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	4	ND
2014	ND	4	ND
2015	ND	4	ND
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
2014-09-08	201409100996AM	ND
2014-09-08	201409100958AM	ND
2014-12-08	201412100440AM	ND
2014-12-08	201412110337AM	ND
2015-03-09	201503110870AM	ND
2015-03-09	201503110861AM	ND
2015-06-09	201506110743AM	ND
2015-06-09	201506110279AM	ND