Perfluorononanoic acid (PFNA)
Parkwood Green
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 | ND | 3 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 23 | 0 | ND |
| 2022 | ND | 18 | 0 | ND |
| 2023 | ND | 11 | 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 |
|---|---|---|
| 2018-04-18 | GW1804181415CKA | ND |
| 2018-04-18 | GW1804181430CKA | ND |
| 2018-04-18 | GW1804181425CKA | ND |
| 2021-01-19 | 2101815-03 | ND |
| 2021-01-19 | 2101815-01 | ND |
| 2021-01-19 | 2101815-02 | ND |
| 2021-03-15 | ND | |
| 2021-03-15 | ND | |
| 2021-03-15 | 2103671-02 | ND |
| 2021-03-15 | 2103671-01 | ND |
| 2021-06-29 | ND | |
| 2021-06-29 | 2106F85-02 | ND |
| 2021-06-29 | 2106F85-01 | ND |
| 2021-06-29 | ND | |
| 2021-09-21 | ND | |
| 2021-09-21 | ND | |
| 2021-09-21 | ND | |
| 2021-09-21 | 2109A99-02 | ND |
| 2021-09-21 | 2109A99-03 | ND |
| 2021-09-21 | 2109A99-01 | ND |
| 2021-12-20 | WL001 12-20-21 PFA2 | ND |
| 2021-12-20 | 2112935-01 | ND |
| 2021-12-20 | ND | |
| 2021-12-20 | ND | |
| 2021-12-20 | ND | |
| 2021-12-20 | WL003 2112935-02 | ND |
| 2022-03-07 | ND | |
| 2022-03-07 | ND | |
| 2022-03-07 | 2203374-01 | ND |
| 2022-03-07 | 2203374-02 | ND |
| 2022-06-20 | ND | |
| 2022-06-20 | ND | |
| 2022-06-20 | 2206E74-02 | ND |
| 2022-06-20 | 2206E74-01 | ND |
| 2022-09-21 | 2209F49-03 | ND |
| 2022-09-21 | 2209F49-02 | ND |
| 2022-09-21 | 2209F49-01 | ND |
| 2022-09-21 | ND | |
| 2022-09-21 | ND | |
| 2022-09-21 | ND | |
| 2022-11-29 | 2211F57-02 | ND |
| 2022-11-29 | ND | |
| 2022-11-29 | ND | |
| 2022-11-29 | 2211F57-01 | ND |
| 2023-02-28 | 2302C70-02 | ND |
| 2023-02-28 | ND | |
| 2023-02-28 | ND | |
| 2023-02-28 | 2302C70-01 | ND |
| 2023-06-27 | ND | |
| 2023-06-27 | ND | |
| 2023-09-18 | ND | |
| 2023-09-18 | ND | |
| 2023-10-31 | ND | |
| 2023-10-31 | ND | |
| 2023-10-31 | ND |