Perfluoroheptane sulfonic acid (PFHpS)
City of Brenham
Perfluoroheptane sulfonic acid (PFHpS) is a member of a group of perfluorinated chemicals used in many consumer products. PFHpS and other 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 |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 4 | 0 | ND |
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 PFHpS was defined by EPA's recommended application of the PFHxS toxicity value published in the Integrated Risk Information System's toxicological review. This health guideline protects against harm to the developing immune system.
ppt = parts per trillion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2023-02-13 | 2390001 | ND |
| 2023-05-22 | 2390001SE2 | ND |
| 2023-10-23 | 2390001SE3R | ND |
| 2023-11-13 | 2390001SE4 | ND |