Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

The Preserve At Hopkinton Condo

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021ND10ND
20220.407 ppt116ND - 0.814 ppt
20230.408 ppt106ND - 0.739 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 Result
2021-12-10ND
2022-01-17ND
2022-02-09ND
2022-03-08ND
2022-04-19ND
2022-06-21ND
2022-07-180.749 ppt
2022-08-160.792 ppt
2022-09-280.726 ppt
2022-10-060.694 ppt
2022-11-280.700 ppt
2022-12-050.814 ppt
2023-01-240.670 ppt
2023-02-15ND
2023-03-010.617 ppt
2023-04-12ND
2023-05-09ND
2023-06-12ND
2023-09-150.652 ppt
2023-10-040.734 ppt
2023-11-080.739 ppt
2023-12-260.665 ppt