Perfluorononanoic acid (PFNA)
Hamburg Board of Public
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 | 8 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2019-03-24 | 1019888 | ND |
| 2019-03-24 | 1019890-1 | ND |
| 2019-06-11 | 1080447 | ND |
| 2019-06-11 | 1080449 | ND |
| 2019-09-18 | 1156987 | ND |
| 2019-09-18 | 1156988 | ND |
| 2019-12-11 | 10502649001 | ND |
| 2019-12-11 | 10502649003 | ND |
| 2020-03-09 | 10511516001 | ND |
| 2020-03-09 | 10511516003 | ND |
| 2021-06-15 | 012106622-0001 | ND |
| 2021-09-13 | 210916014-004 | ND |
| 2022-06-13 | 220617009-005 | ND |
| 2022-08-22 | 220824019-001 | ND |
| 2023-06-12 | 230614006-005 | ND |
| 2023-09-18 | 230920013-005A | ND |