Perfluorononanoic acid (PFNA)
Petersburgh Water District
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 | 11 | 0 | ND |
| 2022 | ND | 17 | 0 | ND |
| 2023 | 0.0820 ppt | 22 | 4 | ND - 0.480 ppt |
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 |
|---|---|---|
| 2021-05-27 | PB0489052721-MID | ND |
| 2021-05-27 | PB0489052721-POST | ND |
| 2021-05-27 | PB0489052721-PRE | ND |
| 2021-08-13 | 410-51384-3 | ND |
| 2021-08-13 | 410-51384-2 | ND |
| 2021-08-13 | 410-51384-1 | ND |
| 2021-09-24 | PB0489092421 PRE 513 | ND |
| 2021-09-24 | PB0489092421 POST | ND |
| 2021-10-22 | 410-60482-5 | ND |
| 2021-11-19 | PB0489111921PRE | ND |
| 2021-12-10 | PB0489121021PRE | ND |
| 2022-01-14 | PB0489011422 PRE | ND |
| 2022-03-25 | 410-77921-1 | ND |
| 2022-03-25 | 410-77921-2 | ND |
| 2022-03-25 | 410-77921-3 | ND |
| 2022-06-06 | 22F0422-02 | ND |
| 2022-06-06 | 44F0422-03 | ND |
| 2022-06-06 | 22F0422-09 | ND |
| 2022-06-06 | 22F0422-01 | ND |
| 2022-06-06 | 22G0821-02 | ND |
| 2022-06-24 | PB0489062422PRE513 | ND |
| 2022-07-29 | PB0489072922-POST | ND |
| 2022-07-29 | PB0489072922-PRE | ND |
| 2022-08-26 | 410-96106-6 | ND |
| 2022-08-26 | 410-96106-2 | ND |
| 2022-10-29 | 410-103907-5 | ND |
| 2022-11-15 | 410-106314-3 | ND |
| 2022-12-22 | 410-110493-5 | ND |
| 2023-01-12 | PB0489011223 | ND |
| 2023-03-30 | PB048903323 PRE513 | ND |
| 2023-04-27 | PB0489042723 MID514 | ND |
| 2023-04-27 | PB0489042723 PRE 513 | 0.430 ppt |
| 2023-04-27 | PB0489033023 MID514 | ND |
| 2023-05-19 | PB0489051923-MID | ND |
| 2023-05-19 | PB0489051923-PRE | ND |
| 2023-06-07 | PB0489060723-PRE | 0.470 ppt |
| 2023-06-07 | PB0489060723-MID | ND |
| 2023-07-28 | PB0489072823MID | ND |
| 2023-07-28 | PB0489072823PRE | 0.430 ppt |
| 2023-08-07 | PB0489080723MID-2 | ND |
| 2023-08-07 | PB0489080723POST | ND |
| 2023-08-07 | PB0489080723PRE | 0.480 ppt |
| 2023-09-22 | PB0489092223POST515 | ND |
| 2023-09-22 | PB0489092223PRE513 | ND |
| 2023-09-29 | PB0489092923POST | ND |
| 2023-10-27 | PB0489102723PRE513 | ND |
| 2023-10-27 | PB0489102723POST515 | ND |
| 2023-11-15 | 410-151526-5-PRE | ND |
| 2023-12-20 | PB0489122023PRE | ND |
| 2023-12-20 | PB0489122023POST | ND |