Perfluorononanoic acid (PFNA)
Bangor
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 | 4 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 12 | 0 | ND |
| 2022 | ND | 10 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2018-07-25 | GWEF1807251320GGA | ND |
| 2018-07-25 | GWEF1807251310GGA | ND |
| 2018-07-25 | GWEF1807251230GGA | ND |
| 2018-07-25 | GWEF1807251245GGA | ND |
| 2021-01-28 | 21A080303PFAS TP009 | ND |
| 2021-01-28 | 21A080301PFAS TP003 | ND |
| 2021-01-28 | 21A080302PFAS TP008 | ND |
| 2021-02-01 | 21B0039001PFAS TP007 | ND |
| 2021-08-31 | ND | |
| 2021-08-31 | 21H1309-10 | ND |
| 2021-08-31 | 21H1309-04 | ND |
| 2021-08-31 | ND | |
| 2021-08-31 | ND | |
| 2021-08-31 | ND | |
| 2021-08-31 | 21H1309-15 | ND |
| 2021-08-31 | 21H1309-17 | ND |
| 2022-07-06 | 22G0143-06 | ND |
| 2022-07-06 | 22G0143-05 | ND |
| 2022-07-06 | 22G0143-05 | ND |
| 2022-07-06 | 22G0143-04 | ND |
| 2022-07-06 | 22G0143-06 | ND |
| 2022-07-06 | 22G0143-02 | ND |
| 2022-07-06 | ND | |
| 2022-07-06 | ND | |
| 2022-07-06 | ND | |
| 2022-07-06 | ND | |
| 2023-07-27 | ND | |
| 2023-07-27 | ND | |
| 2023-07-27 | ND | |
| 2023-07-27 | ND |