Perfluorononanoic acid (PFNA)
Quincy Water Department City Of
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 | 15 | 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 |
|---|---|---|
| 2023-05-24 | 4461671 | ND |
| 2023-05-24 | 4461669 | ND |
| 2023-05-24 | 4461668 | ND |
| 2023-05-24 | 4461667 | ND |
| 2023-05-24 | 4461670 | ND |
| 2023-05-31 | 104350P | ND |
| 2023-05-31 | 104351P | ND |
| 2023-05-31 | 104352P | ND |
| 2023-10-18 | 109524R | ND |
| 2023-10-18 | 109492R | ND |
| 2023-11-20 | 110114P | ND |
| 2023-11-20 | 110115P | ND |
| 2023-11-20 | 110116P | ND |
| 2023-11-20 | 110117P | ND |
| 2023-11-20 | 110118P | ND |