Perfluorononanoic acid (PFNA)
South 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 |
|---|---|---|---|---|
| 2013 | ND | 4 | 0 | ND |
| 2014 | ND | 4 | 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 | N/A | 0 | 0 | N/A |
| 2022 | ND | 8 | 0 | ND |
| 2023 | ND | 8 | 0 | ND |
| 2024 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2013-12-18 | K1313961-003 | ND |
| 2013-12-18 | K1313961-001 | ND |
| 2013-12-18 | K1313961-007 | ND |
| 2013-12-18 | K1313961-005 | ND |
| 2014-06-03 | K1405931-003 | ND |
| 2014-06-03 | K1405931-001 | ND |
| 2014-06-03 | K1405931-007 | ND |
| 2014-06-03 | K1405931-005 | ND |
| 2022-06-15 | 22F0958-03 | ND |
| 2022-06-15 | 22F0958-07 | ND |
| 2022-06-15 | 22F0958-06 | ND |
| 2022-06-15 | 22F0958-05 | ND |
| 2022-06-15 | 22F0958-04 | ND |
| 2022-06-15 | 22F0958-01 | ND |
| 2022-12-13 | 22L0496-02 | ND |
| 2022-12-13 | 22L0496-01 | ND |
| 2023-01-25 | 23A0870-02 | ND |
| 2023-01-25 | 23A0870-01 | ND |
| 2023-05-04 | 23E0483-01 | ND |
| 2023-05-04 | 23E0483-02 | ND |
| 2023-07-25 | 23G1652-01 | ND |
| 2023-07-25 | 23G1652-02 | ND |
| 2023-10-30 | 23J1668-01 | ND |
| 2023-10-30 | 23J1668-02 | ND |