Perfluorononanoic acid (PFNA)
Allendale 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 | N/A | 0 | 0 | N/A |
| 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 | 0.833 ppt | 3 | 1 | ND - 2.50 ppt |
| 2019 | 0.678 ppt | 23 | 6 | ND - 3.80 ppt |
| 2020 | 0.961 ppt | 26 | 6 | ND - 9.12 ppt |
| 2021 | 0.842 ppt | 15 | 5 | ND - 3.13 ppt |
| 2022 | 0.454 ppt | 10 | 2 | ND - 2.43 ppt |
| 2023 | ND | 15 | 0 | ND |
| 2024 | ND | 1 | 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 |
|---|---|---|
| 2018-10-15 | 2018100180010 | 2.50 ppt |
| 2018-10-15 | 2018100180009 | ND |
| 2018-11-09 | 201811140598 | ND |
| 2019-01-16 | 201901180422 | ND |
| 2019-01-16 | 201901180423 | 2.60 ppt |
| 2019-01-16 | 201901180424 | ND |
| 2019-02-12 | 201902140391 | ND |
| 2019-02-12 | 201902140393 | ND |
| 2019-02-12 | 201902140395 | ND |
| 2019-04-17 | 201904180517 | ND |
| 2019-04-17 | 201904180515 | 2.30 ppt |
| 2019-04-17 | 201904180509 | ND |
| 2019-08-19 | 201908200671 | ND |
| 2019-08-19 | 201908200673 | 2.00 ppt |
| 2019-08-19 | 201908200675 | ND |
| 2019-08-19 | 201908200653 | ND |
| 2019-08-19 | 201908200635 | 2.80 ppt |
| 2019-08-19 | 201908200637 | ND |
| 2019-08-19 | 201908200655 | ND |
| 2019-10-09 | 201910110777 | ND |
| 2019-10-09 | 201910110773 | ND |
| 2019-10-09 | 201910110775 | ND |
| 2019-10-09 | 201910110759 | 2.10 ppt |
| 2019-10-09 | 201910110757 | ND |
| 2019-10-09 | 201910110761 | ND |
| 2019-11-06 | 201911070850 | 3.80 ppt |
| 2020-01-16 | 202001170220 | 2.40 ppt |
| 2020-01-16 | 202001170222 | ND |
| 2020-01-16 | 202001170224 | 4.00 ppt |
| 2020-01-16 | 202001170226 | ND |
| 2020-01-16 | 202001170303 | ND |
| 2020-03-19 | 0030939-01 | ND |
| 2020-04-02 | 0040178-01 | 2.87 ppt |
| 2020-04-02 | 0040178-07 | ND |
| 2020-04-02 | 0040178-05 | ND |
| 2020-04-02 | 0040178-03 | 9.12 ppt |
| 2020-04-02 | 0040177-05 | ND |
| 2020-04-02 | 0040177-03 | 3.44 ppt |
| 2020-04-02 | 0040177-01 | ND |
| 2020-07-02 | 0070155-01 | ND |
| 2020-07-02 | 0070155-03 | ND |
| 2020-07-02 | 0070155-05 | ND |
| 2020-07-02 | 0070152-03 | ND |
| 2020-07-02 | 0070152-01 | ND |
| 2020-07-02 | 0070152-05 | ND |
| 2020-10-08 | 0100519-07 | ND |
| 2020-10-08 | 0100518-03 | ND |
| 2020-10-08 | 0100519-03 | 3.16 ppt |
| 2020-10-08 | 0100519-01 | ND |
| 2020-10-08 | 0100518-05 | ND |
| 2020-10-08 | 0100519-05 | ND |
| 2020-10-08 | 0100518-01 | ND |
| 2021-01-07 | 1010338-01 | ND |
| 2021-01-07 | 1010338-04 | 2.47 ppt |
| 2021-01-07 | 1010338-06 | ND |
| 2021-01-07 | 1010337-05 | ND |
| 2021-01-07 | 1010337-01 | 2.26 ppt |
| 2021-01-07 | 1010337-03 | 3.13 ppt |
| 2021-01-07 | 1010337-07 | ND |
| 2021-04-08 | 1040421-04 | ND |
| 2021-04-08 | 1040421-01 | 2.64 ppt |
| 2021-04-08 | 1040421-06 | ND |
| 2021-07-01 | 1070121-01 | ND |
| 2021-07-01 | 1070121-04 | 2.13 ppt |
| 2021-07-01 | 1070121-07 | ND |
| 2021-10-20 | 1101041-01 | ND |
| 2021-10-20 | 1101041-04 | ND |
| 2022-01-06 | 2010302-01 | ND |
| 2022-01-06 | 2010302-02 | ND |
| 2022-04-07 | 2040467-01 | ND |
| 2022-04-07 | 2040467-04 | ND |
| 2022-07-14 | 2070774-02 | 2.11 ppt |
| 2022-07-14 | 2070774-04 | ND |
| 2022-07-21 | 2071102-01 | ND |
| 2022-10-13 | 2100675-01 | ND |
| 2022-10-13 | 2100675-04 | 2.43 ppt |
| 2022-10-13 | 2100675-06 | ND |
| 2023-01-12 | 23A0664-01 | ND |
| 2023-01-12 | 23A0664-03 | ND |
| 2023-01-17 | 100441P | ND |
| 2023-01-17 | 100440P | ND |
| 2023-01-17 | 100849P | ND |
| 2023-04-13 | 23D0677-04 | ND |
| 2023-04-13 | 23D0677-01 | ND |
| 2023-04-18 | 104419P | ND |
| 2023-06-08 | 23F0472-01 | ND |
| 2023-07-13 | 23G0773-01 | ND |
| 2023-07-13 | 23G0773-03 | ND |
| 2023-07-19 | 23G1213-01 | ND |
| 2023-07-19 | 23G1213-02 | ND |
| 2023-10-11 | 23J0844-01 | ND |
| 2023-10-11 | 23J0844-03 | ND |
| 2024-02-14 | 112146P | ND |