Perfluorononanoic acid (PFNA)
Old Westbury
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 | 6 | 0 | ND |
| 2020 | ND | 24 | 0 | ND |
| 2021 | ND | 8 | 0 | ND |
| 2022 | ND | 14 | 0 | ND |
| 2023 | ND | 18 | 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 |
|---|---|---|
| 2019-11-15 | 70112018001 | ND |
| 2019-11-15 | 70112018003 | ND |
| 2019-11-18 | 70112196003 | ND |
| 2019-11-18 | 70112196001 | ND |
| 2019-12-04 | 70114012005 | ND |
| 2019-12-04 | 70114012002 | ND |
| 2020-02-06 | 70120952001 | ND |
| 2020-02-06 | 70120952004 | ND |
| 2020-02-06 | 70120952003 | ND |
| 2020-02-06 | 70120952002 | ND |
| 2020-02-11 | 70121351002 | ND |
| 2020-02-11 | 70121351001 | ND |
| 2020-02-18 | 70122151002 | ND |
| 2020-02-18 | 70122151001 | ND |
| 2020-02-24 | 70122752002 | ND |
| 2020-02-24 | 70122752003 | ND |
| 2020-02-25 | 70122904001 | ND |
| 2020-02-25 | 70122904002 | ND |
| 2020-04-14 | 70128026001 | ND |
| 2020-04-16 | 70128227001 | ND |
| 2020-04-27 | 70129218001 | ND |
| 2020-04-29 | 70129420001 | ND |
| 2020-05-04 | 70129805003 | ND |
| 2020-05-04 | 70129805001 | ND |
| 2020-08-25 | 70143187002 | ND |
| 2020-08-25 | 70143187001 | ND |
| 2020-09-09 | 70145143001 | ND |
| 2020-09-10 | 70145281001 | ND |
| 2020-09-14 | 70145712001 | ND |
| 2020-09-21 | 70146589001 | ND |
| 2021-05-05 | 70171626002 | ND |
| 2021-05-26 | 70174518001 | ND |
| 2021-08-11 | 70183644002 | ND |
| 2021-08-18 | 70184479001 | ND |
| 2021-08-25 | 70185223002 | ND |
| 2021-11-10 | 70194292001 | ND |
| 2021-11-16 | 70194898001 | ND |
| 2021-12-22 | 70198898001 | ND |
| 2022-02-09 | 70203487001 | ND |
| 2022-02-15 | 70204181001 | ND |
| 2022-03-09 | 70206884001 | ND |
| 2022-04-27 | 70212478001-PFAS | ND |
| 2022-05-04 | 70213403001-PFAS | ND |
| 2022-05-25 | 70215952002 | ND |
| 2022-07-19 | 70222654001-PFAS | ND |
| 2022-07-21 | 70222874001-PFAS | ND |
| 2022-07-27 | 70223541001-PFAS | ND |
| 2022-08-17 | 70226250001-PFAS | ND |
| 2022-08-24 | 70227004001-PFAS | ND |
| 2022-11-14 | 70236636001-PFAS | ND |
| 2022-11-16 | 70237103001-PFAS | ND |
| 2022-12-21 | 70240933001-PFAS | ND |
| 2023-02-08 | 70245579001-PFAS | ND |
| 2023-02-15 | 70246419001 | ND |
| 2023-02-22 | 70247119001 | ND |
| 2023-04-19 | 70253384002 | ND |
| 2023-05-03 | 70254928002 | ND |
| 2023-05-10 | 70255820001 | ND |
| 2023-08-16 | 23H2743-04 | ND |
| 2023-08-16 | 23H2743-03 | ND |
| 2023-08-16 | 23H2743-01 | ND |
| 2023-08-16 | 23H2743-05 | ND |
| 2023-08-16 | 23H2743-02 | ND |
| 2023-08-17 | 23H3092-01 | ND |
| 2023-11-01 | 23K0847-01 | ND |
| 2023-11-01 | 23K0847-02 | ND |
| 2023-11-08 | 23K1628-01 | ND |
| 2023-11-08 | 23K1628-02 | ND |
| 2023-11-29 | 23L0059-02 | ND |
| 2023-11-29 | 23L0059-01 | ND |