Perfluorononanoic acid (PFNA)
Pepperell 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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 47 | 0 | ND |
| 2022 | 0.0430 ppt | 50 | 3 | ND - 0.898 ppt |
| 2023 | 0.1000 ppt | 49 | 7 | ND - 0.775 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 |
|---|---|
| 2021-03-08 | ND |
| 2021-03-08 | ND |
| 2021-03-08 | ND |
| 2021-03-08 | ND |
| 2021-03-08 | ND |
| 2021-04-06 | ND |
| 2021-04-06 | ND |
| 2021-04-06 | ND |
| 2021-04-06 | ND |
| 2021-04-06 | ND |
| 2021-04-06 | ND |
| 2021-04-06 | ND |
| 2021-05-12 | ND |
| 2021-05-12 | ND |
| 2021-05-12 | ND |
| 2021-05-12 | ND |
| 2021-05-12 | ND |
| 2021-06-23 | ND |
| 2021-06-23 | ND |
| 2021-06-23 | ND |
| 2021-06-23 | ND |
| 2021-06-23 | ND |
| 2021-07-22 | ND |
| 2021-07-22 | ND |
| 2021-07-22 | ND |
| 2021-08-18 | ND |
| 2021-08-18 | ND |
| 2021-08-18 | ND |
| 2021-08-18 | ND |
| 2021-09-22 | ND |
| 2021-09-22 | ND |
| 2021-09-22 | ND |
| 2021-10-15 | ND |
| 2021-10-15 | ND |
| 2021-10-15 | ND |
| 2021-10-15 | ND |
| 2021-10-15 | ND |
| 2021-10-15 | ND |
| 2021-10-15 | ND |
| 2021-11-17 | ND |
| 2021-11-17 | ND |
| 2021-11-17 | ND |
| 2021-11-17 | ND |
| 2021-12-20 | ND |
| 2021-12-20 | ND |
| 2021-12-20 | ND |
| 2021-12-20 | ND |
| 2022-01-13 | ND |
| 2022-01-13 | ND |
| 2022-01-13 | ND |
| 2022-01-13 | ND |
| 2022-01-13 | ND |
| 2022-02-15 | ND |
| 2022-02-15 | ND |
| 2022-02-15 | ND |
| 2022-02-22 | ND |
| 2022-03-17 | ND |
| 2022-03-17 | ND |
| 2022-03-17 | ND |
| 2022-03-17 | ND |
| 2022-04-19 | ND |
| 2022-04-19 | ND |
| 2022-04-28 | ND |
| 2022-04-28 | ND |
| 2022-05-09 | ND |
| 2022-05-12 | ND |
| 2022-05-12 | 0.898 ppt |
| 2022-05-12 | 0.607 ppt |
| 2022-06-13 | ND |
| 2022-06-13 | ND |
| 2022-06-13 | ND |
| 2022-06-13 | ND |
| 2022-07-26 | ND |
| 2022-07-26 | ND |
| 2022-07-26 | 0.652 ppt |
| 2022-07-26 | ND |
| 2022-07-26 | ND |
| 2022-09-13 | ND |
| 2022-09-13 | ND |
| 2022-09-13 | ND |
| 2022-09-13 | ND |
| 2022-09-13 | ND |
| 2022-09-13 | ND |
| 2022-09-13 | ND |
| 2022-10-04 | ND |
| 2022-10-04 | ND |
| 2022-10-04 | ND |
| 2022-10-04 | ND |
| 2022-10-05 | ND |
| 2022-11-01 | ND |
| 2022-11-01 | ND |
| 2022-11-01 | ND |
| 2022-11-01 | ND |
| 2022-12-06 | ND |
| 2022-12-06 | ND |
| 2022-12-06 | ND |
| 2022-12-06 | ND |
| 2023-01-03 | ND |
| 2023-01-03 | ND |
| 2023-01-03 | ND |
| 2023-01-03 | ND |
| 2023-01-25 | ND |
| 2023-01-25 | ND |
| 2023-02-07 | ND |
| 2023-02-07 | ND |
| 2023-02-07 | ND |
| 2023-02-07 | ND |
| 2023-02-09 | ND |
| 2023-03-06 | ND |
| 2023-03-06 | ND |
| 2023-03-06 | ND |
| 2023-03-06 | ND |
| 2023-04-04 | ND |
| 2023-04-04 | ND |
| 2023-04-04 | ND |
| 2023-04-04 | ND |
| 2023-05-02 | ND |
| 2023-05-02 | ND |
| 2023-05-02 | ND |
| 2023-05-03 | ND |
| 2023-06-06 | ND |
| 2023-06-06 | ND |
| 2023-06-06 | ND |
| 2023-07-24 | ND |
| 2023-07-24 | ND |
| 2023-07-24 | ND |
| 2023-07-24 | ND |
| 2023-07-24 | 0.612 ppt |
| 2023-08-08 | 0.775 ppt |
| 2023-08-08 | 0.728 ppt |
| 2023-08-08 | 0.721 ppt |
| 2023-08-16 | ND |
| 2023-09-12 | ND |
| 2023-09-12 | ND |
| 2023-09-12 | ND |
| 2023-09-19 | ND |
| 2023-09-19 | ND |
| 2023-10-03 | ND |
| 2023-10-03 | ND |
| 2023-10-03 | ND |
| 2023-11-07 | ND |
| 2023-11-07 | ND |
| 2023-11-07 | ND |
| 2023-12-07 | 0.700 ppt |
| 2023-12-07 | 0.729 ppt |
| 2023-12-07 | 0.638 ppt |