Perfluorononanoic acid (PFNA)
City of Vancouver
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 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 33 | 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 |
|---|---|---|
| 2023-03-01 | 4429860 | ND |
| 2023-03-01 | 4429858 | ND |
| 2023-03-01 | 4429855 | ND |
| 2023-03-01 | 4429857 | ND |
| 2023-03-01 | 4429861 | ND |
| 2023-03-01 | 4429856 | ND |
| 2023-03-01 | 4429859 | ND |
| 2023-05-24 | 4555848 | ND |
| 2023-05-24 | 4555849 | ND |
| 2023-05-24 | 4555847 | ND |
| 2023-05-24 | 4555845 | ND |
| 2023-05-24 | 4555844 | ND |
| 2023-05-24 | 4555843 | ND |
| 2023-05-24 | 4555846 | ND |
| 2023-08-09 | 4555886 | ND |
| 2023-08-30 | 4555707 | ND |
| 2023-09-20 | 4531352 | ND |
| 2023-09-20 | 4531351 | ND |
| 2023-09-20 | 4531350 | ND |
| 2023-09-20 | 4531349 | ND |
| 2023-09-20 | 4530140 | ND |
| 2023-09-20 | 4531373 | ND |
| 2023-09-20 | 4530138 | ND |
| 2023-11-29 | 4583943 | ND |
| 2023-11-29 | 4583938 | ND |
| 2023-11-29 | 4583942 | ND |
| 2023-11-29 | 4583932 | ND |
| 2023-11-29 | 4583937 | ND |
| 2023-11-29 | 4583936 | ND |
| 2023-11-29 | 4583935 | ND |
| 2023-11-29 | 4583939 | ND |
| 2023-11-29 | 4583934 | ND |
| 2023-11-29 | 4583933 | ND |
| 2024-05-15 | K2405032-001 | ND |