Perfluorononanoic acid (PFNA)
Southwood Water System
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 | ND | 39 | 0 | ND |
| 2024 | ND | 26 | 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 |
|---|---|---|
| 2023-06-12 | 4483183 | ND |
| 2023-06-12 | 4483135 | ND |
| 2023-06-12 | 4483199 | ND |
| 2023-06-12 | 4483179 | ND |
| 2023-06-12 | 4483225 | ND |
| 2023-06-12 | 4483151 | ND |
| 2023-06-12 | 4483282 | ND |
| 2023-06-12 | 4483157 | ND |
| 2023-06-12 | 4483251 | ND |
| 2023-06-12 | 4483194 | ND |
| 2023-06-13 | 4483175 | ND |
| 2023-06-13 | 4483281 | ND |
| 2023-06-13 | 4483189 | ND |
| 2023-06-13 | 4483286 | ND |
| 2023-06-13 | 4483241 | ND |
| 2023-06-13 | 4483273 | ND |
| 2023-06-13 | 4483280 | ND |
| 2023-06-13 | 4483279 | ND |
| 2023-06-13 | 4483168 | ND |
| 2023-06-13 | 4483262 | ND |
| 2023-06-19 | 4483300 | ND |
| 2023-06-19 | 4483292 | ND |
| 2023-06-19 | 4483294 | ND |
| 2023-06-19 | 4483298 | ND |
| 2023-06-19 | 4483293 | ND |
| 2023-06-19 | 4483296 | ND |
| 2023-06-19 | 4483302 | ND |
| 2023-06-19 | 4483301 | ND |
| 2023-06-19 | 4483295 | ND |
| 2023-06-19 | 4483299 | ND |
| 2023-06-19 | 4483297 | ND |
| 2023-09-12 | 4531285 | ND |
| 2023-09-12 | 4531284 | ND |
| 2023-09-12 | 4531180 | ND |
| 2023-09-12 | 4531179 | ND |
| 2023-09-18 | 4531340 | ND |
| 2023-09-18 | 4531339 | ND |
| 2023-11-13 | 4550132 | ND |
| 2023-11-13 | 4550133 | ND |
| 2024-04-01 | VHD0012-09 | ND |
| 2024-04-01 | VHD0012-03 | ND |
| 2024-04-01 | VHD0012-05 | ND |
| 2024-04-01 | VHD0012-43 | ND |
| 2024-04-01 | VHD0012-41 | ND |
| 2024-04-01 | VHD0012-39 | ND |
| 2024-04-01 | VHD0012-27 | ND |
| 2024-04-01 | VHD0012-29 | ND |
| 2024-04-01 | VHD0012-37 | ND |
| 2024-04-02 | VHD0012-11 | ND |
| 2024-04-02 | VHD0012-07 | ND |
| 2024-04-02 | VHD0012-49 | ND |
| 2024-04-02 | VHD0012-51 | ND |
| 2024-04-02 | VHD0012-35 | ND |
| 2024-04-02 | VHD0012-33 | ND |
| 2024-04-02 | VHD0012-31 | ND |
| 2024-04-02 | VHD0012-25 | ND |
| 2024-04-02 | VHD0012-23 | ND |
| 2024-04-02 | VHD0012-19 | ND |
| 2024-04-02 | VHD0012-13 | ND |
| 2024-04-02 | VHD0012-01 | ND |
| 2024-04-03 | VHD0012-21 | ND |
| 2024-04-03 | VHD0012-45 | ND |
| 2024-04-03 | VHD0012-17 | ND |
| 2024-04-03 | VHD0012-15 | ND |
| 2024-07-15 | VHG0279-01 | ND |