Perfluorononanoic acid (PFNA)
Childersburg Water & Sewer Board
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 | N/A | 0 | 0 | N/A |
| 2020 | ND | 10 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | ND | 8 | 0 | ND |
| 2023 | ND | 16 | 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 |
|---|---|---|
| 2020-03-17 | 2003-00304-002 | ND |
| 2020-03-17 | 2003-00304-003 | ND |
| 2020-03-17 | 2003-00304-004 | ND |
| 2020-03-17 | 2003-00304-005 | ND |
| 2020-03-17 | 2003-00304-001 | ND |
| 2020-09-15 | 2009-00295-001 | ND |
| 2020-09-15 | 2009-00295-002 | ND |
| 2020-09-15 | 2009-00295-003 | ND |
| 2020-09-15 | 2009-00295-004 | ND |
| 2020-09-15 | 2009-00295-005 | ND |
| 2022-07-26 | 2207-00446-001 | ND |
| 2022-07-26 | 2207-00446-002 | ND |
| 2022-07-26 | 2207-00446-003 | ND |
| 2022-07-26 | 2207-00446-004 | ND |
| 2022-11-15 | 2211-00289-009 | ND |
| 2022-11-15 | 2211-00289-007 | ND |
| 2022-11-15 | 2211-00289-002 | ND |
| 2022-11-15 | 2211-00289-005 | ND |
| 2023-01-24 | 2301-00428-001 | ND |
| 2023-01-24 | 2301-00428-002 | ND |
| 2023-01-24 | 2301-00428-003 | ND |
| 2023-01-24 | 2301-00428-004 | ND |
| 2023-06-23 | 2306-00235-004 | ND |
| 2023-06-23 | 2306-00235-003 | ND |
| 2023-06-23 | 2306-00235-002 | ND |
| 2023-06-23 | 2306-00235-001 | ND |
| 2023-07-11 | 2307-00220-001 | ND |
| 2023-07-11 | 2307-00220-002 | ND |
| 2023-07-11 | 2307-00220-003 | ND |
| 2023-07-11 | 2307-00220-004 | ND |
| 2023-10-24 | 2310-00435-001 | ND |
| 2023-10-24 | 2310-00435-002 | ND |
| 2023-10-24 | 2310-00435-003 | ND |
| 2023-10-24 | 2310-00435-004 | ND |