Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Delancy Street Foundation (castle)

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

15

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
20211.80 ppt65ND - 2.38 ppt
20221.41 ppt65ND - 1.88 ppt
20230.976 ppt75ND - 1.82 ppt

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
2021-05-28CI40956PFAS2.28 ppt
2021-06-21CI59282PFAS2.26 ppt
2021-08-31CJ18182PFAS2.38 ppt
2021-09-16CJ30591PFASND
2021-11-24CL85244PFAS1.82 ppt
2021-12-16CK00417PFAS2.06 ppt
2022-03-07CK816661.49 ppt
2022-03-22CK915161.88 ppt
2022-05-25CL383421.60 ppt
2022-09-16CM33905PFAS1.77 ppt
2022-11-29CM933391.71 ppt
2022-12-13CN03737ND
2023-02-02CN34870ND
2023-06-06CO20666PFAS1.01 ppt
2023-06-20CO32816PFAS1.82 ppt
2023-08-22CO81340PFAS1.41 ppt
2023-09-13CO98818PFAS1.62 ppt
2023-12-11CP64637PFAS0.975 ppt
2023-12-21CP73311PFASND