Perfluorohexanoic Acid (PFHxA)
Lanesborough Fire and Water District
Perfluorohexanoic acid 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 |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | 0.618 ppt | 5 | 5 | 0.463 ppt - 0.700 ppt |
| 2021 | 1.23 ppt | 9 | 9 | 0.610 ppt - 2.58 ppt |
| 2022 | 0.926 ppt | 19 | 19 | 0.480 ppt - 1.60 ppt |
| 2023 | 1.40 ppt | 8 | 7 | ND - 3.20 ppt |
ppt = parts per trillion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 1,000 ppt
The EWG Health Guideline of 1,000 ppt for perfluorohexanoic acid was defined by EPA's toxicity value published in the Integrated Risk Information System's toxicological review. This health guideline protects against harm to fetal growth and child development.
ppt = parts per trillion
All test results
| Date | Result |
|---|---|
| 2020-12-10 | 0.700 ppt |
| 2020-12-10 | 0.690 ppt |
| 2020-12-10 | 0.700 ppt |
| 2020-12-18 | 0.539 ppt |
| 2020-12-18 | 0.463 ppt |
| 2021-02-16 | 0.730 ppt |
| 2021-02-16 | 0.800 ppt |
| 2021-04-20 | 2.58 ppt |
| 2021-04-20 | 1.05 ppt |
| 2021-10-18 | 0.860 ppt |
| 2021-10-18 | 1.50 ppt |
| 2021-11-15 | 1.70 ppt |
| 2021-12-13 | 0.610 ppt |
| 2021-12-13 | 1.20 ppt |
| 2022-01-24 | 1.50 ppt |
| 2022-01-24 | 0.620 ppt |
| 2022-02-14 | 0.480 ppt |
| 2022-02-14 | 1.10 ppt |
| 2022-03-14 | 0.890 ppt |
| 2022-03-14 | 0.580 ppt |
| 2022-04-18 | 1.30 ppt |
| 2022-04-18 | 0.540 ppt |
| 2022-05-16 | 1.10 ppt |
| 2022-05-16 | 0.590 ppt |
| 2022-06-20 | 0.670 ppt |
| 2022-07-18 | 0.480 ppt |
| 2022-07-18 | 1.40 ppt |
| 2022-08-15 | 0.790 ppt |
| 2022-08-15 | 1.10 ppt |
| 2022-09-19 | 1.30 ppt |
| 2022-09-19 | 0.770 ppt |
| 2022-10-17 | 1.60 ppt |
| 2022-10-17 | 0.780 ppt |
| 2023-01-23 | 1.000 ppt |
| 2023-01-23 | 3.20 ppt |
| 2023-04-17 | 2.20 ppt |
| 2023-04-17 | 0.730 ppt |
| 2023-07-17 | 0.630 ppt |
| 2023-07-17 | 1.40 ppt |
| 2023-10-16 | ND |
| 2023-10-16 | 2.00 ppt |