Perfluorononanoic acid (PFNA)
Aquarion Water Company of Connecticut - Greenwich System
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 | ND | 9 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 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 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-04-01 | 201404020466AM | ND |
| 2014-04-01 | 201404020496AM | ND |
| 2014-04-01 | 201404020547AM | ND |
| 2014-07-07 | 201407080373AM | ND |
| 2014-07-07 | 201407080377AM | ND |
| 2014-07-07 | 201407080375AM | ND |
| 2014-10-16 | 201410180110AM | ND |
| 2014-10-16 | 201410180094AM | ND |
| 2014-10-16 | 201410180096AM | ND |
| 2015-01-06 | 201501070580AM | ND |
| 2015-02-04 | 201502050741AM | ND |
| 2015-02-04 | 201502050737AM | ND |