Perfluorononanoic acid (PFNA)
Austin Utilities
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 |
|---|---|---|---|---|
| 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 | 9 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 12 | 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 |
|---|---|---|
| 2021-12-15 | 21L0761-02 | ND |
| 2021-12-15 | 21L0761-03 | ND |
| 2021-12-15 | 21L0761-04 | ND |
| 2021-12-15 | 21L0761-05 | ND |
| 2021-12-15 | 21L0761-06 | ND |
| 2021-12-15 | 21L0761-07 | ND |
| 2021-12-15 | 21L0761-08 | ND |
| 2021-12-15 | 21L0761-09 | ND |
| 2021-12-15 | 21L0761-01 | ND |
| 2022-10-26 | 22J1269-01 | ND |
| 2022-10-26 | 22J1269-02 | ND |
| 2023-02-15 | 32300525-1 | ND |
| 2023-02-15 | 32300528-1 | ND |
| 2023-02-15 | 32300527-1 | ND |
| 2023-02-15 | 32300526-1 | ND |
| 2023-02-28 | 32300692-1 | ND |
| 2023-04-11 | 32301151003 | ND |
| 2023-04-11 | 32301151001 | ND |
| 2023-08-21 | 32302825-1 | ND |
| 2023-08-21 | 32302825-3 | ND |
| 2023-08-21 | 32302825-5 | ND |
| 2023-08-21 | 32302825-7 | ND |
| 2023-08-21 | 32302825-9 | ND |