Perfluorononanoic acid (PFNA)
Spanaway Water Company
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 | 18 | 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 |
|---|---|---|
| 2014-04-15 | 201404160620AM | ND |
| 2014-04-15 | 201404160630AM | ND |
| 2014-04-15 | 201404160827AM | ND |
| 2014-04-21 | 201404220212AM | ND |
| 2014-04-21 | 201404220210AM | ND |
| 2014-04-21 | 201404220370AM | ND |
| 2014-04-21 | 201404230324AM | ND |
| 2014-04-21 | 201404230367AM | ND |
| 2014-04-29 | 201404300789AM | ND |
| 2014-10-06 | 201410070319AM | ND |
| 2014-10-06 | 201410070325AM | ND |
| 2014-10-06 | 201410070305AM | ND |
| 2014-10-06 | 201410070399AM | ND |
| 2014-10-06 | 201410070328AM | ND |
| 2014-10-06 | 201410070303AM | ND |
| 2014-10-07 | 201410080459AM | ND |
| 2014-10-07 | 201410080423AM | ND |
| 2014-10-07 | 201410080447AM | ND |