Perfluorononanoic acid (PFNA)
Prairie Path Water Company-oakwood
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 | 2 | 0 | ND |
| 2022 | 0.563 ppt | 8 | 2 | ND - 2.40 ppt |
| 2023 | ND | 6 | 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 |
|---|---|---|
| 2021-08-17 | 4988899 | ND |
| 2021-09-13 | 810-1969-1 | ND |
| 2022-01-11 | FA02202-01 | ND |
| 2022-01-11 | FA02202-03 | ND |
| 2022-04-28 | FD05174-01 | ND |
| 2022-04-28 | FD05174-03 | ND |
| 2022-07-27 | FG05395-01 | ND |
| 2022-07-27 | FG05395-03 | 2.10 ppt |
| 2022-10-19 | FJ03908-01 | ND |
| 2022-10-19 | FJ03908-03 | 2.40 ppt |
| 2023-01-30 | GA04701-01 | ND |
| 2023-01-30 | GA04701-03 | ND |
| 2023-06-14 | GF02763-01 | ND |
| 2023-06-14 | GF02763-03 | ND |
| 2023-09-19 | GI03496-01 | ND |
| 2023-09-19 | GI03496-03 | ND |