Perfluorononanoic acid (PFNA)
Brooklyn 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 | ND | 2 | 0 | ND |
| 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 | 2 | 0 | ND |
| 2022 | 0.0190 ppt | 22 | 1 | ND - 0.420 ppt |
| 2023 | 0.166 ppt | 14 | 4 | ND - 0.900 ppt |
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 |
|---|---|---|
| 2014-03-17 | K1402935-001 | ND |
| 2014-09-02 | K1409504-001 | ND |
| 2021-06-09 | 21F0562-03 | ND |
| 2021-06-09 | 21F0562-01 | ND |
| 2022-06-01 | 22F0083-04 | ND |
| 2022-06-01 | 22F0083-01 | ND |
| 2022-06-01 | 22F0083-03 | ND |
| 2022-06-01 | 22F0083-05 | ND |
| 2022-07-25 | 22G1696-02 | ND |
| 2022-07-25 | 22G1696-01 | ND |
| 2022-07-25 | 22G1696-03 | ND |
| 2022-08-19 | 22H1892-03 | ND |
| 2022-08-19 | 22H1894-01 | ND |
| 2022-08-19 | 22H1892-01 | ND |
| 2022-08-19 | 22H1892-04 | ND |
| 2022-11-01 | 22K0065-01 | ND |
| 2022-11-01 | 22K0065-11 | ND |
| 2022-11-01 | 22K0065-10 | ND |
| 2022-11-01 | 22K0065-09 | ND |
| 2022-11-01 | 22K0065-08 | ND |
| 2022-11-01 | 22K0065-06 | ND |
| 2022-11-01 | 22K0065-02 | 0.420 ppt |
| 2022-11-01 | 22K0065-03 | ND |
| 2022-11-01 | 22K0065-04 | ND |
| 2022-11-01 | 22K0065-07 | ND |
| 2022-11-01 | 22K0065-05 | ND |
| 2023-02-16 | 23B1255-01 | ND |
| 2023-02-16 | 23B1255-03 | ND |
| 2023-02-16 | 23B1255-02 | 0.400 ppt |
| 2023-05-02 | 23E0190-01 | ND |
| 2023-05-02 | 23E0190-02 | 0.620 ppt |
| 2023-05-02 | 23E0190-03 | ND |
| 2023-05-02 | 23E0190-04 | ND |
| 2023-05-02 | 23E0190-05 | ND |
| 2023-05-02 | 23E0190-07 | ND |
| 2023-08-07 | 23H0589-01 | ND |
| 2023-08-07 | 23H0589-02 | 0.900 ppt |
| 2023-08-07 | 23H0589-03 | 0.410 ppt |
| 2023-08-07 | 23H0589-04 | ND |
| 2023-10-11 | 23J0529-01 | ND |