Perfluorononanoic acid (PFNA)
Independence Municipal Utilities Authority Valley View
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 | 4 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2019-01-29 | 201901310295 | ND |
| 2019-04-24 | 201904260187 | ND |
| 2019-07-17 | 201907190394 | ND |
| 2019-10-16 | 201910180276 | ND |
| 2020-01-22 | 202001240423 | ND |
| 2020-04-15 | 0040618-01 | ND |
| 2020-07-15 | 0070799-01 | ND |
| 2020-10-06 | 0100449-01 | ND |
| 2021-01-13 | 1010582-01 | ND |
| 2021-04-20 | 1040914-01 | ND |
| 2021-07-21 | 1071064-01 | ND |
| 2021-10-14 | 1100735-01 | ND |
| 2022-01-12 | 2010563-01 | ND |
| 2022-04-06 | 2040328-01 | ND |
| 2022-07-20 | 2071024-01 | ND |
| 2022-10-19 | 2100823-01 | ND |
| 2023-01-18 | 23A0830-01 | ND |
| 2023-04-13 | 23D0573-01 | ND |
| 2023-07-19 | 23G0961-01 | ND |
| 2023-10-17 | 23J0992-01 | ND |