Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Topsfield 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.

 

84

Samples

0

Samples exceeding legal limit (MCL)

55

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
20200.646 ppt440.473 ppt - 0.830 ppt
20210.723 ppt3028ND - 1.17 ppt
20220.350 ppt2614ND - 0.847 ppt
20230.300 ppt209ND - 0.767 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
2014-02-12ND
2014-02-12ND
2014-08-18ND
2014-08-18ND
2020-02-190.830 ppt
2020-02-190.473 ppt
2020-07-170.676 ppt
2020-07-170.605 ppt
2021-01-221.17 ppt
2021-01-221.13 ppt
2021-01-290.995 ppt
2021-01-290.820 ppt
2021-01-290.900 ppt
2021-02-030.720 ppt
2021-02-030.940 ppt
2021-02-030.720 ppt
2021-03-030.580 ppt
2021-03-030.510 ppt
2021-04-140.710 ppt
2021-04-140.660 ppt
2021-07-020.670 ppt
2021-07-020.730 ppt
2021-07-02ND
2021-08-060.600 ppt
2021-08-060.940 ppt
2021-08-060.850 ppt
2021-09-100.950 ppt
2021-09-100.760 ppt
2021-09-100.560 ppt
2021-10-290.850 ppt
2021-10-291.10 ppt
2021-10-290.480 ppt
2021-11-050.950 ppt
2021-11-050.410 ppt
2021-11-050.760 ppt
2021-12-03ND
2021-12-030.700 ppt
2021-12-030.530 ppt
2022-01-130.570 ppt
2022-01-13ND
2022-01-13ND
2022-01-130.390 ppt
2022-01-130.770 ppt
2022-02-170.760 ppt
2022-02-17ND
2022-02-170.657 ppt
2022-02-170.630 ppt
2022-02-17ND
2022-03-110.660 ppt
2022-03-11ND
2022-03-110.460 ppt
2022-04-14ND
2022-05-25ND
2022-06-09ND
2022-07-14ND
2022-07-14ND
2022-07-14ND
2022-08-110.585 ppt
2022-09-080.592 ppt
2022-10-130.847 ppt
2022-10-13ND
2022-10-130.844 ppt
2022-11-100.728 ppt
2022-12-080.596 ppt
2023-01-120.682 ppt
2023-01-120.767 ppt
2023-01-12ND
2023-02-09ND
2023-03-09ND
2023-04-130.629 ppt
2023-04-13ND
2023-04-13ND
2023-05-11ND
2023-06-08ND
2023-07-130.723 ppt
2023-07-130.627 ppt
2023-07-13ND
2023-08-100.681 ppt
2023-09-140.675 ppt
2023-10-110.607 ppt
2023-11-090.607 ppt
2023-11-09ND
2023-11-09ND
2023-12-14ND