Perfluorononanoic acid (PFNA)
Clark Public Utilities
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 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 | ND | 41 | 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 |
|---|---|---|
| 2023-03-28 | 4543577 | ND |
| 2023-03-28 | 4543579 | ND |
| 2023-03-28 | 4543578 | ND |
| 2023-03-28 | 4471982 | ND |
| 2023-03-28 | 4472054 | ND |
| 2023-03-28 | 4472064 | ND |
| 2023-03-28 | 4472071 | ND |
| 2023-03-28 | 4472049 | ND |
| 2023-03-28 | 4472060 | ND |
| 2023-03-28 | 4472068 | ND |
| 2023-05-23 | 4464425 | ND |
| 2023-05-23 | 4464438 | ND |
| 2023-05-23 | 4464424 | ND |
| 2023-05-23 | 4464423 | ND |
| 2023-05-23 | 4464432 | ND |
| 2023-05-23 | 4464527 | ND |
| 2023-05-23 | 4464426 | ND |
| 2023-05-23 | 4464435 | ND |
| 2023-05-23 | 4464528 | ND |
| 2023-06-01 | 4472038 | ND |
| 2023-06-01 | 4472008 | ND |
| 2023-06-01 | 4472027 | ND |
| 2023-06-01 | 4472036 | ND |
| 2023-06-01 | 4472022 | ND |
| 2023-06-01 | 4472032 | ND |
| 2023-06-01 | 4472012 | ND |
| 2023-06-01 | 4472017 | ND |
| 2023-06-01 | 4472011 | ND |
| 2023-06-01 | 4472045 | ND |
| 2023-06-29 | 4483305 | ND |
| 2023-09-12 | VGI0195-19 | ND |
| 2023-09-12 | VGI0195-17 | ND |
| 2023-09-12 | VGI0195-15 | ND |
| 2023-09-12 | VGI0195-13 | ND |
| 2023-09-12 | VGI0195-11 | ND |
| 2023-09-12 | VGI0195-09 | ND |
| 2023-09-12 | VGI0195-07 | ND |
| 2023-09-12 | VGI0195-05 | ND |
| 2023-09-12 | VGI0195-03 | ND |
| 2023-09-12 | VGI0195-01 | ND |
| 2023-09-19 | 4531335 | ND |