Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Ayer DPW Water Division

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.

 

312

Samples

0

Samples exceeding legal limit (MCL)

79

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
2018ND430ND
20190.248 ppt5210ND - 1.92 ppt
20200.959 ppt3022ND - 3.97 ppt
20210.496 ppt6430ND - 2.05 ppt
20220.166 ppt498ND - 2.08 ppt
20230.148 ppt749ND - 2.91 ppt
2024N/A00N/A

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
2018-01-09ND
2018-01-09ND
2018-01-09ND
2018-01-09ND
2018-01-09ND
2018-01-09ND
2018-01-09ND
2018-01-09ND
2018-01-09ND
2018-01-09ND
2018-02-08ND
2018-02-12ND
2018-03-01ND
2018-03-01ND
2018-03-01ND
2018-03-07ND
2018-03-07ND
2018-04-23ND
2018-04-23ND
2018-04-23ND
2018-04-23ND
2018-04-23ND
2018-04-23ND
2018-04-23ND
2018-04-23ND
2018-04-23ND
2018-08-24ND
2018-08-24ND
2018-08-24ND
2018-08-24ND
2018-08-24ND
2018-08-24ND
2018-08-24ND
2018-08-24ND
2018-08-24ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2018-10-25ND
2019-02-20ND
2019-02-20ND
2019-02-20ND
2019-02-20ND
2019-02-20ND
2019-02-20ND
2019-02-20ND
2019-02-20ND
2019-02-20ND
2019-02-20ND
2019-02-20ND
2019-02-20ND
2019-05-21ND
2019-05-21ND
2019-05-21ND
2019-06-27ND
2019-06-27ND
2019-07-03ND
2019-07-03ND
2019-07-031.87 ppt
2019-08-021.52 ppt
2019-08-02ND
2019-08-02ND
2019-08-20ND
2019-08-20ND
2019-08-20ND
2019-08-20ND
2019-08-20ND
2019-08-20ND
2019-08-20ND
2019-08-20ND
2019-08-20ND
2019-09-031.64 ppt
2019-09-03ND
2019-09-03ND
2019-09-03ND
2019-10-031.92 ppt
2019-10-03ND
2019-10-03ND
2019-10-03ND
2019-11-11ND
2019-11-11ND
2019-11-180.816 ppt
2019-11-180.509 ppt
2019-11-180.816 ppt
2019-11-220.632 ppt
2019-11-221.42 ppt
2019-11-221.75 ppt
2019-12-10ND
2019-12-10ND
2019-12-10ND
2019-12-10ND
2020-02-130.510 ppt
2020-02-130.874 ppt
2020-02-130.575 ppt
2020-02-131.32 ppt
2020-02-13ND
2020-02-131.80 ppt
2020-02-130.857 ppt
2020-02-133.97 ppt
2020-02-130.966 ppt
2020-06-091.94 ppt
2020-06-090.654 ppt
2020-06-090.983 ppt
2020-06-090.469 ppt
2020-06-090.618 ppt
2020-06-090.775 ppt
2020-06-090.576 ppt
2020-06-093.01 ppt
2020-06-091.40 ppt
2020-09-020.459 ppt
2020-09-020.637 ppt
2020-09-020.972 ppt
2020-12-03ND
2020-12-03ND
2020-12-03ND
2020-12-032.14 ppt
2020-12-033.26 ppt
2020-12-03ND
2020-12-03ND
2020-12-03ND
2020-12-03ND
2021-01-080.581 ppt
2021-01-080.881 ppt
2021-01-08ND
2021-01-08ND
2021-01-081.20 ppt
2021-01-081.82 ppt
2021-01-080.964 ppt
2021-01-08ND
2021-01-081.000 ppt
2021-01-080.690 ppt
2021-01-081.33 ppt
2021-02-22ND
2021-02-220.696 ppt
2021-02-22ND
2021-02-22ND
2021-02-22ND
2021-03-24ND
2021-03-241.47 ppt
2021-03-240.815 ppt
2021-04-28ND
2021-04-280.749 ppt
2021-04-28ND
2021-05-18ND
2021-05-18ND
2021-05-180.728 ppt
2021-05-181.38 ppt
2021-06-092.05 ppt
2021-06-092.05 ppt
2021-06-090.960 ppt
2021-06-090.953 ppt
2021-06-090.950 ppt
2021-06-09ND
2021-06-09ND
2021-06-090.957 ppt
2021-06-10ND
2021-06-10ND
2021-06-101.33 ppt
2021-06-10ND
2021-06-10ND
2021-07-21ND
2021-07-21ND
2021-07-210.898 ppt
2021-07-210.898 ppt
2021-07-211.29 ppt
2021-08-191.27 ppt
2021-08-19ND
2021-08-190.849 ppt
2021-08-19ND
2021-08-19ND
2021-09-240.766 ppt
2021-09-24ND
2021-09-24ND
2021-10-140.786 ppt
2021-10-14ND
2021-10-14ND
2021-11-120.798 ppt
2021-11-12ND
2021-11-12ND
2021-12-02ND
2021-12-020.642 ppt
2021-12-02ND
2021-12-10ND
2021-12-10ND
2021-12-10ND
2022-01-04ND
2022-01-04ND
2022-01-04ND
2022-02-03ND
2022-02-03ND
2022-02-03ND
2022-02-240.741 ppt
2022-02-24ND
2022-02-24ND
2022-02-241.29 ppt
2022-03-07ND
2022-03-070.781 ppt
2022-03-07ND
2022-04-21ND
2022-04-21ND
2022-04-210.764 ppt
2022-04-25ND
2022-04-250.870 ppt
2022-04-252.08 ppt
2022-05-13ND
2022-05-13ND
2022-05-130.883 ppt
2022-06-090.708 ppt
2022-06-09ND
2022-06-09ND
2022-07-20ND
2022-07-20ND
2022-07-20ND
2022-07-20ND
2022-08-11ND
2022-08-11ND
2022-08-11ND
2022-08-11ND
2022-09-08ND
2022-09-08ND
2022-09-08ND
2022-09-08ND
2022-10-12ND
2022-10-12ND
2022-10-12ND
2022-10-12ND
2022-11-07ND
2022-11-07ND
2022-11-07ND
2022-11-07ND
2022-12-01ND
2022-12-01ND
2022-12-01ND
2022-12-01ND
2023-01-05ND
2023-01-05ND
2023-01-05ND
2023-01-05ND
2023-02-01ND
2023-02-01ND
2023-02-01ND
2023-02-01ND
2023-03-03ND
2023-03-03ND
2023-03-20ND
2023-03-20ND
2023-03-20ND
2023-03-20ND
2023-03-20ND
2023-04-10ND
2023-04-10ND
2023-04-10ND
2023-04-10ND
2023-04-10ND
2023-04-10ND
2023-04-10ND
2023-04-10ND
2023-04-10ND
2023-04-10ND
2023-05-02ND
2023-05-02ND
2023-05-04ND
2023-05-04ND
2023-05-04ND
2023-05-04ND
2023-05-081.000 ppt
2023-05-080.645 ppt
2023-05-082.91 ppt
2023-06-06ND
2023-06-06ND
2023-06-06ND
2023-06-06ND
2023-07-14ND
2023-07-14ND
2023-07-14ND
2023-07-14ND
2023-08-071.62 ppt
2023-08-070.716 ppt
2023-08-08ND
2023-08-08ND
2023-08-08ND
2023-08-08ND
2023-09-13ND
2023-09-13ND
2023-09-13ND
2023-09-131.90 ppt
2023-09-13ND
2023-09-13ND
2023-09-13ND
2023-09-130.693 ppt
2023-09-130.690 ppt
2023-09-130.811 ppt
2023-09-13ND
2023-09-13ND
2023-10-04ND
2023-10-04ND
2023-10-04ND
2023-10-04ND
2023-11-07ND
2023-11-07ND
2023-11-20ND
2023-11-20ND
2023-11-20ND
2023-11-20ND
2023-12-08ND
2023-12-08ND
2023-12-08ND
2023-12-08ND