Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Hamilton 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.

 

35

Samples

0

Samples exceeding legal limit (MCL)

23

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
20210.720 ppt220.440 ppt - 1.000 ppt
20220.470 ppt1812ND - 1.000 ppt
20230.505 ppt159ND - 1.17 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
2021-10-210.440 ppt
2021-10-211.000 ppt
2022-02-08ND
2022-02-08ND
2022-02-08ND
2022-02-080.500 ppt
2022-02-081.000 ppt
2022-02-08ND
2022-02-08ND
2022-03-080.780 ppt
2022-04-210.950 ppt
2022-04-21ND
2022-05-170.890 ppt
2022-06-150.660 ppt
2022-07-120.600 ppt
2022-07-120.420 ppt
2022-09-130.710 ppt
2022-10-110.410 ppt
2022-10-110.630 ppt
2022-12-140.905 ppt
2023-01-110.426 ppt
2023-02-060.538 ppt
2023-03-200.586 ppt
2023-04-040.769 ppt
2023-04-04ND
2023-05-15ND
2023-05-15ND
2023-06-051.17 ppt
2023-08-301.14 ppt
2023-09-121.05 ppt
2023-10-02ND
2023-10-02ND
2023-10-101.03 ppt
2023-11-14ND
2023-12-110.866 ppt