Perfluorononanoic acid (PFNA)
Ringwood Water Department
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 | ND | 10 | 0 | ND |
| 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 | 0.220 ppt | 20 | 2 | ND - 2.30 ppt |
| 2019 | ND | 12 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | 0.238 ppt | 9 | 3 | ND - 0.880 ppt |
| 2022 | ND | 9 | 0 | ND |
| 2023 | ND | 11 | 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 |
|---|---|---|
| 2013-01-22 | 100228P | ND |
| 2013-01-22 | 100227P | ND |
| 2013-01-22 | 100226P | ND |
| 2013-01-22 | 100225Q | ND |
| 2013-04-22 | 101054P | ND |
| 2013-07-24 | 101654P | ND |
| 2013-07-24 | 101653P | ND |
| 2013-07-24 | 101652P | ND |
| 2013-09-04 | 102014R | ND |
| 2013-11-04 | 102538Q | ND |
| 2019-02-18 | 4206331 | ND |
| 2019-02-18 | 4206329 | ND |
| 2019-02-18 | 4206333 | ND |
| 2019-05-30 | 4312719 | ND |
| 2019-05-30 | 4312721 | ND |
| 2019-05-30 | 4312723 | ND |
| 2019-08-27 | 10489537001 | ND |
| 2019-08-27 | 10489537003 | ND |
| 2019-08-27 | 10489537005 | ND |
| 2019-11-04 | 10498377005 | ND |
| 2019-11-04 | 10498377001 | ND |
| 2019-11-04 | 10498377003 | ND |
| 2020-02-24 | 10509679001 | ND |
| 2020-02-24 | 10509679003 | ND |
| 2020-02-24 | 10509679005 | ND |
| 2021-03-05 | 012102120-0001 | ND |
| 2021-03-05 | 012102120-0003 | 0.620 ppt |
| 2021-03-05 | 012102120-0005 | ND |
| 2021-06-01 | 012105827-0001 | 0.640 ppt |
| 2021-06-01 | 012105827-0003 | 0.880 ppt |
| 2021-08-11 | 210810032-001 | ND |
| 2021-08-11 | 210810032-003 | ND |
| 2021-10-21 | 211020040-003 | ND |
| 2021-10-21 | 211020040-001 | ND |
| 2022-01-31 | 220130006-001 | ND |
| 2022-01-31 | 220130006-003 | ND |
| 2022-01-31 | 220130006-005 | ND |
| 2022-04-25 | 220424009-001 | ND |
| 2022-04-25 | 220424009-003 | ND |
| 2022-07-15 | 220714037-001 | ND |
| 2022-07-15 | 220714037-003 | ND |
| 2022-10-04 | 221003007-001 | ND |
| 2022-10-04 | 221003007-003 | ND |
| 2023-03-30 | 230328042-003 | ND |
| 2023-03-30 | 230328042-001 | ND |
| 2023-03-30 | 230328042-005 | ND |
| 2023-06-08 | 230607019-003A | ND |
| 2023-06-08 | 230607019-001A | ND |
| 2023-09-20 | 230919045-003 | ND |
| 2023-09-20 | 230919045-001 | ND |
| 2023-11-28 | 231127045-001A | ND |
| 2023-12-21 | 231220032-005 | ND |
| 2023-12-21 | 231220032-003 | ND |
| 2023-12-21 | 231220032-001 | ND |