Perfluorononanoic acid (PFNA)

City of Carrollton

NOTE: City of Carrollton purchases water from Dallas Water Utility which is required to test for perfluorononanoic acid (pfna). Sample information shown below was taken by Dallas Water Utility.

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
2014	ND	2	ND
2015	ND	2	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

NOTE: City of Carrollton purchases water from Dallas Water Utility which is required to test for perfluorononanoic acid (pfna). Sample information shown below was taken by Dallas Water Utility.

Date	Lab ID	Result
2014-04-08	Q1410915005	ND
2014-04-08	Q1410915009	ND
2014-04-08	Q1410915001	ND
2014-07-15	Q1428070005	ND
2014-07-15	Q1428070009	ND
2014-07-15	Q1428070001	ND
2014-10-21	Q1453299005	ND
2014-10-21	Q1453299009	ND
2014-10-21	Q1453299001	ND
2015-01-13	Q1500512005	ND
2015-01-13	Q1500512009	ND
2015-01-13	Q1500512001	ND