Perfluorononanoic acid (PFNA)
Caledonia Township
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 | ND | 2 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 2 | 0 | ND |
| 2024 | ND | 2 | 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 |
|---|---|---|
| 2018-05-31 | GW1805311500GSC | ND |
| 2018-05-31 | GW1805311445GSC | ND |
| 2020-12-02 | 2012164-01 | ND |
| 2020-12-02 | 2012164-03 | ND |
| 2021-06-02 | ND | |
| 2021-06-02 | ND | |
| 2021-06-02 | 2106146-01 | ND |
| 2021-06-02 | 2106138-01 | ND |
| 2022-06-06 | ND | |
| 2022-06-06 | ND | |
| 2022-06-06 | 2206451-01-PFAS | ND |
| 2022-06-06 | 2206453-01 | ND |
| 2023-06-12 | ND | |
| 2023-06-12 | ND | |
| 2024-05-14 | 116380P | ND |
| 2024-05-14 | 116381P | ND |