Perfluorononanoic acid (PFNA)
Winding Brook Mobile Home Park System 2
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 | N/A | 0 | 0 | N/A |
| 2019 | 0.215 ppt | 4 | 1 | ND - 0.860 ppt |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 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 | Lab ID | Result |
|---|---|---|
| 2019-02-05 | 9020802-01 | ND |
| 2019-04-01 | 9040512-01 | ND |
| 2019-09-05 | 9090611-01 | ND |
| 2019-12-17 | 9122007-01 | 0.860 ppt |
| 2020-03-10 | L2011407-01 | ND |
| 2020-06-02 | 0060503-01 | ND |
| 2020-09-08 | 0091113-01 | ND |
| 2020-12-08 | 0121105-01 | ND |
| 2021-12-07 | 21L1002-01 | ND |
| 2022-10-13 | 012251942-0001 | ND |
| 2023-10-05 | 012363188 | ND |