Perfluorononanoic acid (PFNA)
Ormsby Mobile Home Park
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 | 0.945 ppt | 4 | 4 | 0.894 ppt - 1.04 ppt |
| 2022 | 0.998 ppt | 4 | 4 | 0.794 ppt - 1.16 ppt |
| 2023 | 0.864 ppt | 4 | 4 | 0.774 ppt - 0.922 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 |
|---|---|---|
| 2021-04-26 | 210410892-001-PFAS | 0.926 ppt |
| 2021-06-02 | 210614949-001-PFAS | 1.04 ppt |
| 2021-07-20 | 210720824-001-PFAS | 0.919 ppt |
| 2021-10-04 | 211029623-001-PFAS | 0.894 ppt |
| 2022-02-22 | 220204488-001-PFOA | 0.794 ppt |
| 2022-04-11 | 220408864-001-PFOA | 0.988 ppt |
| 2022-07-26 | 220720515-001-PFOA | 1.16 ppt |
| 2022-10-18 | 221030432-001-PFOA | 1.05 ppt |
| 2023-03-28 | 230307833-001-PFAS | 0.913 ppt |
| 2023-05-08 | 230512044-002-PFAS | 0.774 ppt |
| 2023-07-26 | 230722157-001-PFAS | 0.846 ppt |
| 2023-10-17 | 231033133-002-PFAS | 0.922 ppt |