Perfluorononanoic acid (PFNA)
North Saint Paul
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 |
|---|---|---|---|---|
| 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 | 6 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 13 | 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 |
|---|---|---|
| 2021-08-23 | 21H1912-03 | ND |
| 2021-08-23 | 21H1912-04 | ND |
| 2021-08-23 | 21H1912-05 | ND |
| 2021-08-23 | 21H1912-06 | ND |
| 2021-08-23 | 21H1912-07 | ND |
| 2021-08-23 | 21H1912-01 | ND |
| 2022-10-31 | 22J1387-01 | ND |
| 2022-10-31 | 22J1387-02 | ND |
| 2023-01-24 | 32300287-1 | ND |
| 2023-01-24 | 32300283-1 | ND |
| 2023-01-24 | 32300284-1 | ND |
| 2023-01-24 | 32300286-2 | ND |
| 2023-01-30 | 32300355-2 | ND |
| 2023-04-24 | 23D1326-02 | ND |
| 2023-04-24 | 23D1326-01 | ND |
| 2023-07-19 | 32302446-9 | ND |
| 2023-07-19 | 32302446-7 | ND |
| 2023-07-19 | 32302446-5 | ND |
| 2023-07-19 | 32302446-3 | ND |
| 2023-07-19 | 32302446-1 | ND |
| 2023-12-07 | 23L0261-01 | ND |