Perfluorononanoic acid (PFNA)
Saint Louis Park
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 |
|---|---|---|---|---|
| 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 | 7 | 0 | ND |
| 2022 | ND | 6 | 0 | ND |
| 2023 | ND | 11 | 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 |
|---|---|---|
| 2021-09-17 | 21I0901-02 | ND |
| 2021-09-17 | 21I0901-03 | ND |
| 2021-09-17 | 21I0901-04 | ND |
| 2021-09-17 | 21I0901-05 | ND |
| 2021-09-17 | 21I0901-06 | ND |
| 2021-09-17 | 21I0901-07 | ND |
| 2021-09-17 | 21I0901-01 | ND |
| 2022-06-03 | 22F0216-01 | ND |
| 2022-06-03 | 22F0216-03 | ND |
| 2022-06-03 | 22F0216-04 | ND |
| 2022-06-03 | 22F0216-05 | ND |
| 2022-06-22 | 22F1367-04 | ND |
| 2022-06-22 | 22F1367-03 | ND |
| 2023-01-25 | 32300319-1 | ND |
| 2023-01-26 | 32300315-2 | ND |
| 2023-01-26 | 32300316-2 | ND |
| 2023-01-26 | 32300318-2 | ND |
| 2023-03-15 | 32300847-1 | ND |
| 2023-03-15 | 32300847-3 | ND |
| 2023-07-19 | 32302470-1 | ND |
| 2023-07-19 | 32302470-3 | ND |
| 2023-07-19 | 32302470-5 | ND |
| 2023-07-19 | 32302470-7 | ND |
| 2023-07-19 | 32302470-9 | ND |