Perfluorononanoic acid (PFNA)
Big Flats Water District #2
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 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 | 5 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 2 | 0 | ND |
| 2024 | 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 |
|---|---|---|
| 2021-03-17 | 21032031-01PFAS | ND |
| 2021-03-17 | 21032031-03PFAS | ND |
| 2021-03-17 | 21032031-02PFAS | ND |
| 2021-03-17 | 21032031-04PFAS | ND |
| 2021-06-09 | 21061475-01PFO | ND |
| 2022-08-10 | S2H0422-01PFOS | ND |
| 2022-08-10 | S2H0422-04PFOS | ND |
| 2022-08-10 | S2H0422-07PFOS | ND |
| 2023-05-17 | 23051899-01PFOS | ND |
| 2023-05-17 | 23051899-03PFOS | ND |
| 2024-02-12 | 113268P | ND |
| 2024-02-12 | 113269P | ND |
| 2024-02-12 | 113270P | ND |
| 2024-08-14 | 119932P | ND |
| 2024-08-14 | 119933P | ND |
| 2024-08-14 | 119934P | ND |