Perfluorononanoic acid (PFNA)
Colony Heights Condominium
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 | 0.141 ppt | 12 | 3 | ND - 0.641 ppt |
| 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 | Result |
|---|---|
| 2021-01-25 | ND |
| 2021-02-24 | 0.619 ppt |
| 2021-03-23 | 0.641 ppt |
| 2021-04-12 | 0.431 ppt |
| 2021-06-17 | ND |
| 2021-07-06 | ND |
| 2021-08-04 | ND |
| 2021-08-09 | ND |
| 2021-09-14 | ND |
| 2021-10-12 | ND |
| 2021-11-08 | ND |
| 2021-12-07 | ND |
| 2022-01-28 | ND |
| 2022-04-25 | ND |
| 2022-07-26 | ND |
| 2022-10-11 | ND |
| 2023-01-16 | ND |
| 2023-04-24 | ND |
| 2023-07-13 | ND |
| 2023-10-04 | ND |