Perfluorononanoic acid (PFNA)
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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 | ND | 6 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 6 | 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 |
|---|---|---|
| 2021-07-15 | CA3400191_003_003-202107151135 | ND |
| 2021-07-15 | CA3400191_002_002-202107151120 | ND |
| 2021-07-15 | CA3400191_001_001-202107151115 | ND |
| 2021-10-21 | CA3400191_002_002-202110211435 | ND |
| 2021-10-21 | CA3400191_003_003-202110211445 | ND |
| 2021-10-21 | CA3400191_001_001-202110211450 | ND |
| 2022-01-27 | CA3400191_003_003-202201271345 | ND |
| 2022-01-27 | CA3400191_001_001-202201271330 | ND |
| 2022-01-27 | CA3400191_002_002-202201271315 | ND |
| 2023-03-30 | CA3400191_003_003-202303301145 | ND |
| 2023-03-30 | CA3400191_003_003-202303301200 | ND |
| 2023-03-30 | CA3400191_001_001-202303301035 | ND |
| 2023-03-30 | CA3400191_002_002-202303301100 | ND |
| 2023-03-30 | CA3400191_002_002-202303301120 | ND |
| 2023-03-30 | CA3400191_001_001-202303301000 | ND |