Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Essex Fells Water Department

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.

 

43

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND160ND
2019ND110ND
2020ND120ND
20210.287 ppt114ND - 0.930 ppt
2022ND40ND
2023ND50ND

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.006 ppt

The EWG Health Guideline of 6 ppt for perfluorononanoic acid was defined by EPA recommended application of the toxicity value for PFDA published in the Integrated Risk Information System’s toxicological review . This health guideline harm to the immune system and harm to fetal growth and child development.

EPA Maximum Contaminant
Level (MCL): 10 ppt

ppt = parts per trillion

All test results

Date Lab ID Result
2019-05-314312837ND
2019-05-314312835ND
2019-05-314312839ND
2019-08-2010488508001ND
2019-08-2010488508003ND
2019-08-2010488508005ND
2019-10-1510496021001ND
2019-10-1510496021003ND
2019-11-1910500053001ND
2019-11-1910500053003ND
2019-11-1910500053005ND
2020-02-1810509257003ND
2020-02-1810509257005ND
2020-02-1810509257001ND
2020-05-1910519029001ND
2020-05-1910519029003ND
2020-06-2510523101001ND
2020-08-1810529223001ND
2020-08-1810529223003ND
2020-08-1810529223005ND
2020-11-1710539962005ND
2020-11-1710539962003ND
2020-11-1710539962001ND
2021-02-1610548177001ND
2021-02-1610548177005ND
2021-02-1610548177003ND
2021-05-18012105347-00010.760 ppt
2021-05-18012105347-0005ND
2021-05-18012105347-00030.850 ppt
2021-07-21012108141-00010.620 ppt
2021-07-21012108141-0003ND
2021-07-21012108141-00050.930 ppt
2021-10-221101118-01ND
2021-12-141120827-01ND
2022-01-112010405-01ND
2022-06-032060148-01ND
2022-08-092080455-01ND
2022-12-082120325-01ND
2023-02-1623B0696-01ND
2023-05-1723E0835-01ND
2023-08-0823H0518-01ND
2023-09-2523I1340-01ND
2023-12-2723L1175-01ND