Perfluorononanoic acid (PFNA)
Farmington
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 | 6 | 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 | 7 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2014-03-05 | K1402415-001 | ND |
| 2014-03-05 | K1402415-005 | ND |
| 2014-03-05 | K1402415-003 | ND |
| 2014-09-02 | K1409500-003 | ND |
| 2014-09-02 | K1409500-001 | ND |
| 2014-09-17 | K1410521-001 | ND |
| 2021-09-29 | 21J0007-02 | ND |
| 2021-09-29 | 21J0007-07 | ND |
| 2021-09-29 | 21J0007-06 | ND |
| 2021-09-29 | 21J0007-05 | ND |
| 2021-09-29 | 21J0007-04 | ND |
| 2021-09-29 | 21J0007-03 | ND |
| 2021-09-29 | 21J0007-01 | ND |
| 2022-10-24 | 22J1046-01 | ND |
| 2022-10-24 | 22J1046-02 | ND |
| 2023-01-11 | 23A0319-01 | ND |
| 2023-04-19 | 23D1146-01 | ND |
| 2023-08-08 | 23H0687-01 | ND |