Perfluorononanoic acid (PFNA)
Newton Water & Sewer Utility
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 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 8 | 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 |
|---|---|---|
| 2020-03-05 | 4581124 | ND |
| 2020-06-10 | 4648504 | ND |
| 2020-09-23 | 4734712 | ND |
| 2020-12-09 | 4794003 | ND |
| 2021-03-24 | 4862151 | ND |
| 2021-06-16 | 4932118 | ND |
| 2021-09-15 | 810-2525-1 | ND |
| 2021-12-15 | 810-10235-1 | ND |
| 2022-03-23 | 810-18829-1 | ND |
| 2022-06-14 | 810-28002-1 | ND |
| 2022-09-14 | 810-37402-1 | ND |
| 2022-12-21 | 810-48243-1 | ND |
| 2023-01-17 | 100452P | ND |
| 2023-03-29 | 810-57858-1 | ND |
| 2023-04-10 | 103176P | ND |
| 2023-06-14 | 810-66445-1 | ND |
| 2023-07-17 | 105976P | ND |
| 2023-09-20 | 810-78489-1 | ND |
| 2023-10-10 | 108952P | ND |
| 2023-12-05 | 810-87260-1 | ND |