Perfluorononanoic acid (PFNA)
Baton Rouge Water Company
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 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
| 2024 | ND | 41 | 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 |
|---|---|---|
| 2024-03-04 | 35864390003SE1 | ND |
| 2024-03-04 | 35864283003SE1 | ND |
| 2024-03-04 | 35864390001SE1 | ND |
| 2024-03-04 | 35864283001SE1 | ND |
| 2024-03-04 | 35864390005SE1 | ND |
| 2024-03-04 | 35864390007SE1 | ND |
| 2024-03-04 | 35864283005SE1 | ND |
| 2024-03-05 | 35864726007SE1 | ND |
| 2024-03-05 | 35864726005SE1 | ND |
| 2024-03-05 | 35864726003SE1 | ND |
| 2024-03-05 | 35864713003SE1 | ND |
| 2024-03-05 | 35864726001SE1 | ND |
| 2024-03-05 | 35864713005SE1 | ND |
| 2024-03-05 | 35864723001SE1 | ND |
| 2024-03-05 | 35864713001SE1 | ND |
| 2024-03-06 | 35865178005SE1 | ND |
| 2024-03-06 | 35865178003SE1 | ND |
| 2024-03-06 | 35865178001SE1 | ND |
| 2024-03-06 | 35865178007SE1 | ND |
| 2024-03-06 | 35865197007SE1 | ND |
| 2024-03-06 | 35865197001SE1 | ND |
| 2024-03-06 | 35865197003SE1 | ND |
| 2024-03-06 | 35865197005SE1 | ND |
| 2024-03-11 | 35866074005SE1 | ND |
| 2024-03-11 | 35866074007SE1 | ND |
| 2024-03-11 | 35866074003SE1 | ND |
| 2024-03-11 | 35866074001SE1 | ND |
| 2024-03-13 | 35866758003SE1 | ND |
| 2024-03-13 | 35866758001SE1 | ND |
| 2024-03-13 | 35866758005SE1 | ND |
| 2024-03-13 | 35866758007SE1 | ND |
| 2024-03-18 | 35867493005SE1 | ND |
| 2024-03-18 | 35867493003SE1 | ND |
| 2024-03-18 | 35867493001SE1 | ND |
| 2024-03-19 | 35867750005SE1 | ND |
| 2024-03-19 | 35867750001SE1 | ND |
| 2024-03-19 | 35867750003SE1 | ND |
| 2024-03-20 | 35868057005SE1 | ND |
| 2024-03-20 | 35868057007SE1 | ND |
| 2024-03-20 | 35868057003SE1 | ND |
| 2024-03-20 | 35868057001SE1 | ND |