Perfluorohexane sulfonate (PFHXS)
Rowley Water Department
Perfluorohexane sulfonate is a member of a group of perfluorinated chemicals used in many consumer products. Perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. 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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 4 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | 0.548 ppt | 9 | 9 | 0.380 ppt - 0.700 ppt |
| 2023 | 0.364 ppt | 22 | 15 | ND - 0.928 ppt |
ppt = parts per trillion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.001 ppt
The EWG Health Guideline of 0.001 ppt for perfluorohexane sulfonate was defined by EPA's toxicity value published in the Integrated Risk Information System's toxicological review. This health guideline harm to the developing immune system.
EPA Maximum Contaminant
Level (MCL): 10 ppt
ppt = parts per trillion
All test results
| Date | Result |
|---|---|
| 2020-03-10 | ND |
| 2020-03-10 | ND |
| 2020-03-10 | ND |
| 2020-03-10 | ND |
| 2022-01-26 | 0.550 ppt |
| 2022-01-26 | 0.400 ppt |
| 2022-04-13 | 0.610 ppt |
| 2022-04-13 | 0.500 ppt |
| 2022-07-12 | 0.700 ppt |
| 2022-07-12 | 0.530 ppt |
| 2022-10-11 | 0.590 ppt |
| 2022-10-11 | 0.380 ppt |
| 2022-12-21 | 0.671 ppt |
| 2023-01-09 | 0.470 ppt |
| 2023-01-09 | 0.690 ppt |
| 2023-01-10 | ND |
| 2023-01-10 | ND |
| 2023-02-06 | 0.654 ppt |
| 2023-03-06 | 0.614 ppt |
| 2023-04-05 | ND |
| 2023-04-05 | 0.476 ppt |
| 2023-05-11 | 0.359 ppt |
| 2023-06-01 | 0.451 ppt |
| 2023-07-06 | 0.478 ppt |
| 2023-07-06 | 0.393 ppt |
| 2023-07-10 | ND |
| 2023-07-10 | ND |
| 2023-08-15 | 0.416 ppt |
| 2023-09-06 | 0.426 ppt |
| 2023-10-02 | 0.480 ppt |
| 2023-10-02 | ND |
| 2023-10-11 | ND |
| 2023-11-02 | 0.616 ppt |
| 2023-11-29 | 0.928 ppt |
| 2023-12-04 | 0.556 ppt |