Perfluorononanoic acid (PFNA)
City of Nampa
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 |
|---|---|---|---|---|
| 2014 | ND | 26 | 0 | ND |
| 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 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-01-29 | 140131024-006 | ND |
| 2014-01-29 | 140131024-011 | ND |
| 2014-01-29 | 140131024-005 | ND |
| 2014-01-29 | 140131024-010 | ND |
| 2014-01-29 | 140131024-016 | ND |
| 2014-01-30 | 140131024-009 | ND |
| 2014-01-30 | 140131024-007 | ND |
| 2014-01-30 | 140131024-015 | ND |
| 2014-01-30 | 140131024-017 | ND |
| 2014-01-30 | 140131024-012 | ND |
| 2014-01-30 | 140131024-008 | ND |
| 2014-01-30 | 140131024-013 | ND |
| 2014-01-30 | 140131024-014 | ND |
| 2014-07-21 | 140723034-009 | ND |
| 2014-07-21 | 140723034-008 | ND |
| 2014-07-21 | 140723034-007 | ND |
| 2014-07-21 | 140723034-006 | ND |
| 2014-07-21 | 140723034-005 | ND |
| 2014-07-21 | 140723034-015 | ND |
| 2014-07-21 | 140723034-014 | ND |
| 2014-07-21 | 140723034-017 | ND |
| 2014-07-21 | 140723034-016 | ND |
| 2014-07-21 | 140723034-012 | ND |
| 2014-07-21 | 140723034-011 | ND |
| 2014-07-21 | 140723034-010 | ND |
| 2014-07-21 | 140723034-013 | ND |