Perfluorononanoic acid (PFNA)
City of Coeur D Alene
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 | 9 | 0 | ND |
| 2015 | ND | 12 | 0 | ND |
| 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 | ND | 17 | 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 |
|---|---|---|
| 2014-08-25 | 140827001-005 | ND |
| 2014-08-25 | 140827001-007 | ND |
| 2014-08-25 | 140827001-006 | ND |
| 2014-08-25 | 140827001-002 | ND |
| 2014-08-25 | 140827001-001 | ND |
| 2014-08-25 | 140827001-008 | ND |
| 2014-08-25 | 140827001-009 | ND |
| 2014-08-25 | 140827001-004 | ND |
| 2014-08-25 | 140827001-003 | ND |
| 2015-01-20 | 150121001-001 | ND |
| 2015-01-20 | 150121002-001 | ND |
| 2015-06-22 | 150626001-009 | ND |
| 2015-06-22 | 150626001-002 | ND |
| 2015-06-23 | 150626001-006 | ND |
| 2015-06-23 | 150626001-003 | ND |
| 2015-06-23 | 150626001-005 | ND |
| 2015-06-24 | 150626001-007 | ND |
| 2015-06-24 | 150626001-001 | ND |
| 2015-06-24 | 150626001-008 | ND |
| 2015-06-24 | 150626001-004 | ND |
| 2015-06-30 | 150706001-001 | ND |
| 2023-11-21 | PFASMDL004010 | ND |
| 2023-11-21 | PFASMDL004001 | ND |
| 2023-11-21 | PFASMDL004002 | ND |
| 2023-11-21 | PFASMDL004003 | ND |
| 2023-11-21 | PFASMDL004004 | ND |
| 2023-11-21 | PFASMDL004005 | ND |
| 2023-11-21 | PFASMDL004006 | ND |
| 2023-11-21 | PFASMDL004007 | ND |
| 2023-11-21 | PFASMDL004008 | ND |
| 2023-11-21 | PFASMDL004009 | ND |
| 2023-11-21 | PFASMDL004011 | ND |
| 2023-12-20 | PFASMDL077806 | ND |
| 2023-12-20 | PFASMDL077805 | ND |
| 2023-12-20 | PFASMDL077804 | ND |
| 2023-12-20 | PFASMDL077803 | ND |
| 2023-12-20 | PFASMDL077802 | ND |
| 2023-12-20 | PFASMDL077801 | ND |