Perfluorononanoic acid (PFNA)
Ayer Road Properties LLC
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 |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 14 | 0 | ND |
| 2020 | ND | 7 | 0 | ND |
| 2021 | ND | 15 | 0 | ND |
| 2022 | 0.0560 ppt | 15 | 1 | ND - 0.840 ppt |
| 2023 | ND | 15 | 0 | ND |
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 |
|---|---|
| 2018-08-22 | ND |
| 2019-05-03 | ND |
| 2019-05-03 | ND |
| 2019-05-03 | ND |
| 2019-05-03 | ND |
| 2019-05-03 | ND |
| 2019-05-03 | ND |
| 2019-05-03 | ND |
| 2019-05-03 | ND |
| 2019-05-30 | ND |
| 2019-05-30 | ND |
| 2019-05-30 | ND |
| 2019-05-30 | ND |
| 2019-05-30 | ND |
| 2019-05-30 | ND |
| 2020-01-02 | ND |
| 2020-05-05 | ND |
| 2020-05-05 | ND |
| 2020-05-05 | ND |
| 2020-05-05 | ND |
| 2020-05-05 | ND |
| 2020-05-05 | ND |
| 2021-01-12 | ND |
| 2021-01-12 | ND |
| 2021-01-12 | ND |
| 2021-04-25 | ND |
| 2021-04-25 | ND |
| 2021-04-25 | ND |
| 2021-04-25 | ND |
| 2021-04-25 | ND |
| 2021-04-25 | ND |
| 2021-07-26 | ND |
| 2021-07-26 | ND |
| 2021-07-26 | ND |
| 2021-10-25 | ND |
| 2021-10-25 | ND |
| 2021-10-25 | ND |
| 2022-01-30 | ND |
| 2022-01-30 | ND |
| 2022-01-30 | ND |
| 2022-04-10 | ND |
| 2022-04-10 | ND |
| 2022-04-10 | ND |
| 2022-04-10 | ND |
| 2022-04-13 | ND |
| 2022-04-13 | 0.840 ppt |
| 2022-07-11 | ND |
| 2022-07-11 | ND |
| 2022-07-11 | ND |
| 2022-10-03 | ND |
| 2022-10-03 | ND |
| 2022-10-03 | ND |
| 2023-01-16 | ND |
| 2023-01-16 | ND |
| 2023-01-16 | ND |
| 2023-04-10 | ND |
| 2023-04-10 | ND |
| 2023-04-10 | ND |
| 2023-04-10 | ND |
| 2023-04-10 | ND |
| 2023-04-10 | ND |
| 2023-07-17 | ND |
| 2023-07-17 | ND |
| 2023-08-28 | ND |
| 2023-10-09 | ND |
| 2023-10-09 | ND |
| 2023-11-15 | ND |