Perfluorononanoic acid (PFNA)
Cal Am - Dunnigan
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 | ND | 1 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 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 |
|---|---|---|
| 2019-11-26 | CA5700712_001_001-201911261310 | ND |
| 2020-01-22 | CA5700712_011_011-202001221230 | ND |
| 2020-11-05 | CA5700712_001_001-202011051205 | ND |
| 2021-02-10 | CA5700712_001_001-202102100930 | ND |
| 2021-05-12 | CA5700712_001_001-202105120900 | ND |
| 2021-08-12 | CA5700712_001_001-202108120808 | ND |
| 2021-11-10 | CA5700712_001_001-202111100900 | ND |
| 2022-03-17 | CA5700712_001_001-202203171130 | ND |
| 2022-08-23 | CA5700712_050_050-202208230900 | ND |