Perfluorononanoic acid (PFNA)
Sussex County Hlth-the Homested
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 | ND | 4 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 5 | 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 |
|---|---|---|
| 2019-02-15 | 4199713 | ND |
| 2019-05-23 | 4310391 | ND |
| 2019-09-06 | 4416325 | ND |
| 2019-11-14 | 4486720 | ND |
| 2020-02-21 | 4571637 | ND |
| 2020-04-20 | 4612880 | ND |
| 2021-03-25 | 4862905 | ND |
| 2021-05-20 | 4908275 | ND |
| 2021-09-21 | 810-2997-1 | ND |
| 2021-11-08 | 202111090659 | ND |
| 2022-02-10 | 810-14503-1 | ND |
| 2022-05-24 | 810-25758-1 | ND |
| 2022-09-09 | 810-37048-1 | ND |
| 2022-10-12 | 810-41312-1 | ND |
| 2023-02-14 | 810-53486-1 | ND |
| 2023-04-07 | 810-59054-1 | ND |
| 2023-06-21 | 810-67146-1 | ND |
| 2023-09-11 | 810-77386-1 | ND |
| 2023-11-15 | 810-85426-1 | ND |