Perfluorononanoic acid (PFNA)
Maple Grove
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 | 11 | 0 | ND |
| 2023 | ND | 16 | 0 | ND |
| 2024 | ND | 1 | 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 |
|---|---|---|
| 2021-10-26 | 21J1501-02 | ND |
| 2021-10-26 | 21J1501-03 | ND |
| 2021-10-26 | 21J1501-04 | ND |
| 2021-10-26 | 21J1501-05 | ND |
| 2021-10-26 | 21J1501-06 | ND |
| 2021-10-26 | 21J1501-07 | ND |
| 2021-10-26 | 21J1501-08 | ND |
| 2021-10-26 | 21J1501-09 | ND |
| 2021-10-26 | 21J1501-01 | ND |
| 2022-11-03 | 22K0286-10 | ND |
| 2022-11-03 | 22K0286-11 | ND |
| 2022-11-03 | 22K0286-09 | ND |
| 2022-11-03 | 22K0286-08 | ND |
| 2022-11-03 | 22K0286-07 | ND |
| 2022-11-03 | 22K0286-05 | ND |
| 2022-11-03 | 22K0286-04 | ND |
| 2022-11-03 | 22K0286-03 | ND |
| 2022-11-03 | 22K0286-02 | ND |
| 2022-11-03 | 22K0286-01 | ND |
| 2022-11-03 | 22K0286-06 | ND |
| 2023-02-28 | 23C0037-01 | ND |
| 2023-02-28 | 23C0037-02 | ND |
| 2023-02-28 | 23C0037-03 | ND |
| 2023-02-28 | 23C0037-04 | ND |
| 2023-02-28 | 23C0037-05 | ND |
| 2023-04-24 | 23D1333-01 | ND |
| 2023-04-24 | 23D1339-04 | ND |
| 2023-04-24 | 23D1335-03 | ND |
| 2023-04-24 | 23D1335-01 | ND |
| 2023-04-24 | 23D1333-02 | ND |
| 2023-07-19 | 32302481-1 | ND |
| 2023-08-08 | 23H0647-01 | ND |
| 2023-08-08 | 23H0647-02 | ND |
| 2023-08-08 | 23H0647-03 | ND |
| 2023-08-08 | 23H0647-04 | ND |
| 2023-08-08 | 23H0647-05 | ND |
| 2024-04-01 | 32400941001 | ND |