Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Hopedale 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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
20200.542 ppt2014ND - 1.05 ppt
20210.259 ppt21ND - 0.518 ppt
2022ND30ND
20230.324 ppt31ND - 0.973 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
2020-10-280.782 ppt
2020-10-28ND
2020-10-28ND
2020-10-28ND
2020-10-280.837 ppt
2020-10-281.05 ppt
2020-10-28ND
2020-11-090.642 ppt
2020-11-090.902 ppt
2020-11-090.642 ppt
2020-11-091.05 ppt
2020-11-090.456 ppt
2020-11-090.748 ppt
2020-11-09ND
2020-11-090.575 ppt
2020-11-091.05 ppt
2020-11-090.748 ppt
2020-11-090.452 ppt
2020-11-090.912 ppt
2020-11-09ND
2021-10-070.518 ppt
2021-11-16ND
2022-01-12ND
2022-04-05ND
2022-07-19ND
2023-11-16ND
2023-11-160.973 ppt
2023-11-16ND