Perfluorononanoic acid (PFNA)
Mountainside Resort
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 | ND | 1 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 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 |
|---|---|---|
| 2019-08-06 | 1908-19194-001 | ND |
| 2020-06-01 | 2006-12319-001 | ND |
| 2020-09-14 | 2009-25720-001 | ND |
| 2020-12-15 | 2012-36402-001 | ND |
| 2021-03-16 | 2103-06845-001 | ND |
| 2021-06-14 | 2106-16426-001 | ND |
| 2021-09-14 | 2109-27277-001 | ND |
| 2021-12-07 | 2112-36084-001 | ND |
| 2022-03-15 | 2203-06488-001 | ND |
| 2022-06-06 | 2206-14516-001 | ND |
| 2022-09-13 | 2209-26122-001 | ND |
| 2022-12-05 | 2212-34702-001 | ND |
| 2023-03-03 | 2303-05735-001 | ND |
| 2023-06-12 | 2306-16079-001 | ND |
| 2023-08-29 | 2308-26714-001 | ND |
| 2023-11-16 | 2311-36497-001 | ND |