Perfluorononanoic acid (PFNA)
Cedar Crest
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 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 32 | 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 |
|---|---|---|
| 2023-03-21 | 4449352 | ND |
| 2023-03-21 | 4449360 | ND |
| 2023-03-21 | 4449345 | ND |
| 2023-03-21 | 4449363 | ND |
| 2023-03-21 | 4449362 | ND |
| 2023-03-22 | 4449354 | ND |
| 2023-03-22 | 4449351 | ND |
| 2023-03-22 | 4449349 | ND |
| 2023-03-22 | 4449346 | ND |
| 2023-03-22 | 4449357 | ND |
| 2023-03-22 | 4449347 | ND |
| 2023-04-18 | 4452606 | ND |
| 2023-04-18 | 4452606 | ND |
| 2023-04-18 | 4452663 | ND |
| 2023-04-18 | 4452663 | ND |
| 2023-05-30 | 4472137 | ND |
| 2023-09-05 | 4526454 | ND |
| 2023-09-05 | 4526452 | ND |
| 2023-09-05 | 4526455 | ND |
| 2023-09-05 | 4526453 | ND |
| 2023-09-05 | 4526451 | ND |
| 2023-09-05 | 4526457 | ND |
| 2023-09-05 | 4526458 | ND |
| 2023-09-05 | 4526456 | ND |
| 2023-11-20 | 4568338 | ND |
| 2023-11-20 | 4568342 | ND |
| 2023-11-20 | 4568324 | ND |
| 2023-11-20 | 4568335 | ND |
| 2023-11-20 | 4568345 | ND |
| 2023-11-20 | 4568343 | ND |
| 2023-11-20 | 4568341 | ND |
| 2023-11-20 | 4568334 | ND |