Perfluorononanoic acid (PFNA)
Hynes Estates Mutual Water Company
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 | 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 | 10 | 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 |
|---|---|---|
| 2023-02-01 | CA3000519_001_001-202302011115 | ND |
| 2023-02-01 | CA3000519_005_005-202302010915 | ND |
| 2023-02-01 | CA3000519_001_001-202302011125 | ND |
| 2023-03-16 | CA3000519_001_001-202303161040 | ND |
| 2023-04-24 | CA3000519_001_001-202304240955 | ND |
| 2023-04-24 | CA3000519_005_005-202304241030 | ND |
| 2023-07-13 | CA3000519_001_001-202307131015 | ND |
| 2023-07-13 | CA3000519_005_005-202307131025 | ND |
| 2023-07-13 | CA3000519_001_001-202307131010 | ND |
| 2023-11-08 | CA3000519_005_005-202311080935 | ND |