Perfluorononanoic acid (PFNA)
Mayfield
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 |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 8 | 0 | ND |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2021-05-14 | JH2103554-PFOA | ND |
| 2021-09-10 | JH2108191-PFOA | ND |
| 2021-09-10 | JH2108190-PFOA | ND |
| 2021-11-05 | J1K0601-01-PFOA/OS | ND |
| 2021-11-05 | J1K0601-02-PFOA/S | ND |
| 2022-03-28 | JH2202332-PFOA/S | ND |
| 2022-03-28 | JH2202333-PFOA/S | ND |
| 2022-05-31 | JH2204107-PFAS | ND |
| 2022-05-31 | JH2204108-PFAS | ND |
| 2022-08-26 | JH2207425-PFAS | ND |
| 2022-08-26 | JH2207424-PFAS | ND |
| 2022-11-14 | JH2209835-PFAS | ND |
| 2022-11-14 | JH2209836-PFAS | ND |
| 2023-03-17 | JH2301973-PFAS | ND |
| 2023-03-17 | JH2301974-PFAS | ND |