Perfluorononanoic acid (PFNA)
Leicester Water Supply District
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 | 0.120 ppt | 8 | 1 | ND - 0.960 ppt |
| 2021 | 0.116 ppt | 44 | 7 | ND - 0.940 ppt |
| 2022 | 0.0630 ppt | 46 | 3 | ND - 1.10 ppt |
| 2023 | 0.173 ppt | 36 | 6 | ND - 1.30 ppt |
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 |
|---|---|
| 2020-12-09 | ND |
| 2020-12-09 | ND |
| 2020-12-09 | ND |
| 2020-12-09 | ND |
| 2020-12-09 | ND |
| 2020-12-09 | 0.960 ppt |
| 2020-12-09 | ND |
| 2020-12-09 | ND |
| 2021-02-22 | ND |
| 2021-02-22 | ND |
| 2021-02-22 | ND |
| 2021-02-22 | ND |
| 2021-02-22 | ND |
| 2021-02-22 | ND |
| 2021-02-22 | ND |
| 2021-02-22 | ND |
| 2021-02-22 | ND |
| 2021-02-22 | 0.520 ppt |
| 2021-02-22 | ND |
| 2021-02-22 | 0.810 ppt |
| 2021-05-13 | ND |
| 2021-05-13 | ND |
| 2021-05-13 | ND |
| 2021-05-13 | ND |
| 2021-05-13 | 0.750 ppt |
| 2021-05-13 | 0.700 ppt |
| 2021-05-13 | ND |
| 2021-06-22 | ND |
| 2021-06-22 | ND |
| 2021-07-20 | ND |
| 2021-08-11 | 0.500 ppt |
| 2021-08-11 | ND |
| 2021-08-11 | ND |
| 2021-08-11 | 0.870 ppt |
| 2021-08-11 | ND |
| 2021-08-11 | ND |
| 2021-08-11 | ND |
| 2021-09-15 | ND |
| 2021-09-15 | ND |
| 2021-10-21 | ND |
| 2021-10-21 | ND |
| 2021-10-21 | ND |
| 2021-10-21 | ND |
| 2021-10-21 | ND |
| 2021-10-21 | ND |
| 2021-10-21 | 0.940 ppt |
| 2021-10-21 | ND |
| 2021-10-21 | ND |
| 2021-11-23 | ND |
| 2021-11-23 | ND |
| 2021-12-15 | ND |
| 2021-12-15 | ND |
| 2022-01-25 | ND |
| 2022-01-25 | ND |
| 2022-01-25 | ND |
| 2022-01-25 | ND |
| 2022-01-25 | ND |
| 2022-01-25 | ND |
| 2022-01-26 | ND |
| 2022-01-26 | ND |
| 2022-01-26 | ND |
| 2022-02-22 | ND |
| 2022-02-22 | ND |
| 2022-03-16 | ND |
| 2022-03-16 | ND |
| 2022-04-28 | ND |
| 2022-04-28 | ND |
| 2022-04-28 | ND |
| 2022-04-28 | ND |
| 2022-04-28 | ND |
| 2022-04-28 | ND |
| 2022-04-28 | ND |
| 2022-04-28 | ND |
| 2022-04-28 | ND |
| 2022-05-19 | ND |
| 2022-05-19 | ND |
| 2022-06-28 | ND |
| 2022-06-28 | ND |
| 2022-07-20 | ND |
| 2022-07-20 | ND |
| 2022-07-20 | ND |
| 2022-07-20 | ND |
| 2022-07-20 | ND |
| 2022-07-20 | 1.10 ppt |
| 2022-07-20 | ND |
| 2022-07-20 | 0.980 ppt |
| 2022-08-25 | ND |
| 2022-08-25 | ND |
| 2022-09-22 | ND |
| 2022-09-22 | ND |
| 2022-10-26 | 0.810 ppt |
| 2022-10-26 | ND |
| 2022-10-26 | ND |
| 2022-10-26 | ND |
| 2022-11-22 | ND |
| 2022-11-22 | ND |
| 2022-12-20 | ND |
| 2022-12-20 | ND |
| 2023-01-27 | ND |
| 2023-01-27 | 0.810 ppt |
| 2023-01-27 | ND |
| 2023-01-27 | ND |
| 2023-01-27 | ND |
| 2023-01-27 | ND |
| 2023-01-27 | ND |
| 2023-01-27 | ND |
| 2023-01-27 | 0.800 ppt |
| 2023-01-27 | ND |
| 2023-02-21 | ND |
| 2023-03-22 | ND |
| 2023-04-25 | 1.30 ppt |
| 2023-04-25 | ND |
| 2023-04-25 | ND |
| 2023-04-25 | ND |
| 2023-04-25 | ND |
| 2023-04-25 | ND |
| 2023-05-22 | ND |
| 2023-06-22 | ND |
| 2023-07-24 | ND |
| 2023-07-24 | ND |
| 2023-07-24 | 1.10 ppt |
| 2023-07-24 | 1.10 ppt |
| 2023-07-24 | ND |
| 2023-07-24 | ND |
| 2023-08-22 | ND |
| 2023-08-23 | ND |
| 2023-09-28 | ND |
| 2023-09-29 | ND |
| 2023-10-17 | ND |
| 2023-10-17 | ND |
| 2023-10-17 | ND |
| 2023-10-17 | ND |
| 2023-10-17 | 1.10 ppt |
| 2023-10-17 | ND |