Perfluorononanoic acid (PFNA)
Groveland Water Department
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 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 | 0.279 ppt | 23 | 11 | ND - 0.930 ppt |
| 2022 | 0.184 ppt | 16 | 5 | ND - 0.986 ppt |
| 2023 | 0.146 ppt | 9 | 2 | ND - 0.825 ppt |
| 2024 | ND | 2 | 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 |
|---|---|
| 2021-01-07 | ND |
| 2021-01-07 | 0.911 ppt |
| 2021-01-07 | ND |
| 2021-01-07 | ND |
| 2021-01-07 | 0.712 ppt |
| 2021-02-01 | ND |
| 2021-02-01 | ND |
| 2021-02-01 | 0.503 ppt |
| 2021-03-09 | ND |
| 2021-03-09 | ND |
| 2021-05-03 | 0.930 ppt |
| 2021-06-03 | 0.450 ppt |
| 2021-07-06 | 0.410 ppt |
| 2021-07-06 | ND |
| 2021-07-06 | ND |
| 2021-07-06 | 0.410 ppt |
| 2021-07-06 | ND |
| 2021-08-02 | 0.520 ppt |
| 2021-09-01 | 0.730 ppt |
| 2021-10-04 | ND |
| 2021-10-04 | 0.440 ppt |
| 2021-11-05 | 0.400 ppt |
| 2021-12-06 | ND |
| 2022-01-06 | ND |
| 2022-01-06 | ND |
| 2022-02-07 | ND |
| 2022-03-03 | ND |
| 2022-04-01 | ND |
| 2022-04-01 | ND |
| 2022-05-02 | ND |
| 2022-06-02 | ND |
| 2022-07-06 | ND |
| 2022-07-06 | ND |
| 2022-08-02 | 0.480 ppt |
| 2022-09-06 | 0.450 ppt |
| 2022-10-03 | ND |
| 2022-10-03 | 0.550 ppt |
| 2022-11-08 | 0.472 ppt |
| 2022-12-05 | 0.986 ppt |
| 2023-01-05 | ND |
| 2023-01-05 | 0.825 ppt |
| 2023-02-07 | ND |
| 2023-05-05 | ND |
| 2023-05-05 | 0.485 ppt |
| 2023-07-06 | ND |
| 2023-07-06 | ND |
| 2023-10-05 | ND |
| 2023-10-05 | ND |
| 2024-04-16 | ND |
| 2024-04-16 | ND |