Perfluorohexanoic Acid (PFHxA)
Pepperell DPW Water Division
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 |
|---|---|---|---|---|
| 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 | N/A | 0 | 0 | N/A |
| 2021 | 0.460 ppt | 48 | 25 | ND - 2.05 ppt |
| 2022 | 0.645 ppt | 50 | 29 | ND - 2.60 ppt |
| 2023 | 0.785 ppt | 49 | 34 | ND - 2.25 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 |
|---|---|
| 2021-03-08 | ND |
| 2021-03-08 | 1.01 ppt |
| 2021-03-08 | 0.962 ppt |
| 2021-03-08 | 0.819 ppt |
| 2021-03-08 | 0.792 ppt |
| 2021-04-06 | 0.608 ppt |
| 2021-04-06 | 0.720 ppt |
| 2021-04-06 | ND |
| 2021-04-06 | ND |
| 2021-04-06 | ND |
| 2021-04-06 | 0.588 ppt |
| 2021-04-06 | ND |
| 2021-05-12 | ND |
| 2021-05-12 | 0.902 ppt |
| 2021-05-12 | 0.675 ppt |
| 2021-05-12 | ND |
| 2021-05-12 | 0.843 ppt |
| 2021-06-23 | ND |
| 2021-06-23 | 0.629 ppt |
| 2021-06-23 | 0.637 ppt |
| 2021-06-23 | ND |
| 2021-06-23 | ND |
| 2021-07-22 | ND |
| 2021-07-22 | ND |
| 2021-07-22 | ND |
| 2021-08-18 | 2.05 ppt |
| 2021-08-18 | 0.763 ppt |
| 2021-08-18 | 1.98 ppt |
| 2021-08-18 | 0.648 ppt |
| 2021-08-18 | ND |
| 2021-09-22 | ND |
| 2021-09-22 | 0.895 ppt |
| 2021-09-22 | 0.839 ppt |
| 2021-10-15 | 0.597 ppt |
| 2021-10-15 | ND |
| 2021-10-15 | 0.926 ppt |
| 2021-10-15 | ND |
| 2021-10-15 | ND |
| 2021-10-15 | 0.947 ppt |
| 2021-10-15 | ND |
| 2021-11-17 | ND |
| 2021-11-17 | 1.04 ppt |
| 2021-11-17 | ND |
| 2021-11-17 | 0.739 ppt |
| 2021-12-20 | ND |
| 2021-12-20 | 0.731 ppt |
| 2021-12-20 | ND |
| 2021-12-20 | 0.720 ppt |
| 2022-01-13 | ND |
| 2022-01-13 | ND |
| 2022-01-13 | ND |
| 2022-01-13 | ND |
| 2022-01-13 | ND |
| 2022-02-15 | 0.757 ppt |
| 2022-02-15 | 0.634 ppt |
| 2022-02-15 | ND |
| 2022-02-22 | ND |
| 2022-03-17 | ND |
| 2022-03-17 | ND |
| 2022-03-17 | 0.747 ppt |
| 2022-03-17 | 0.621 ppt |
| 2022-04-19 | ND |
| 2022-04-19 | ND |
| 2022-04-28 | 0.825 ppt |
| 2022-04-28 | 0.878 ppt |
| 2022-05-09 | ND |
| 2022-05-12 | 0.988 ppt |
| 2022-05-12 | 1.22 ppt |
| 2022-05-12 | 1.28 ppt |
| 2022-06-13 | 0.709 ppt |
| 2022-06-13 | 1.21 ppt |
| 2022-06-13 | ND |
| 2022-06-13 | 1.05 ppt |
| 2022-07-26 | 2.60 ppt |
| 2022-07-26 | 1.45 ppt |
| 2022-07-26 | 0.650 ppt |
| 2022-07-26 | 0.759 ppt |
| 2022-07-26 | 1.09 ppt |
| 2022-09-13 | 2.02 ppt |
| 2022-09-13 | ND |
| 2022-09-13 | 1.05 ppt |
| 2022-09-13 | 1.02 ppt |
| 2022-09-13 | ND |
| 2022-09-13 | 0.891 ppt |
| 2022-09-13 | 0.888 ppt |
| 2022-10-04 | 0.884 ppt |
| 2022-10-04 | 1.97 ppt |
| 2022-10-04 | ND |
| 2022-10-04 | 0.822 ppt |
| 2022-10-05 | ND |
| 2022-11-01 | 0.787 ppt |
| 2022-11-01 | ND |
| 2022-11-01 | 0.910 ppt |
| 2022-11-01 | 1.93 ppt |
| 2022-12-06 | ND |
| 2022-12-06 | ND |
| 2022-12-06 | 1.59 ppt |
| 2022-12-06 | ND |
| 2023-01-03 | 1.08 ppt |
| 2023-01-03 | ND |
| 2023-01-03 | 0.908 ppt |
| 2023-01-03 | 0.634 ppt |
| 2023-01-25 | ND |
| 2023-01-25 | ND |
| 2023-02-07 | ND |
| 2023-02-07 | 0.729 ppt |
| 2023-02-07 | 0.622 ppt |
| 2023-02-07 | 0.767 ppt |
| 2023-02-09 | ND |
| 2023-03-06 | ND |
| 2023-03-06 | 0.907 ppt |
| 2023-03-06 | ND |
| 2023-03-06 | 1.01 ppt |
| 2023-04-04 | 0.871 ppt |
| 2023-04-04 | 0.727 ppt |
| 2023-04-04 | ND |
| 2023-04-04 | 0.618 ppt |
| 2023-05-02 | 0.987 ppt |
| 2023-05-02 | 0.962 ppt |
| 2023-05-02 | ND |
| 2023-05-03 | ND |
| 2023-06-06 | 1.30 ppt |
| 2023-06-06 | 0.620 ppt |
| 2023-06-06 | 0.812 ppt |
| 2023-07-24 | 1.32 ppt |
| 2023-07-24 | 1.35 ppt |
| 2023-07-24 | 1.12 ppt |
| 2023-07-24 | 1.19 ppt |
| 2023-07-24 | ND |
| 2023-08-08 | 2.03 ppt |
| 2023-08-08 | 1.53 ppt |
| 2023-08-08 | 1.01 ppt |
| 2023-08-16 | 1.37 ppt |
| 2023-09-12 | 1.14 ppt |
| 2023-09-12 | 0.792 ppt |
| 2023-09-12 | 1.34 ppt |
| 2023-09-19 | ND |
| 2023-09-19 | ND |
| 2023-10-03 | 0.866 ppt |
| 2023-10-03 | ND |
| 2023-10-03 | 1.41 ppt |
| 2023-11-07 | 1.50 ppt |
| 2023-11-07 | 1.59 ppt |
| 2023-11-07 | ND |
| 2023-12-07 | 2.25 ppt |
| 2023-12-07 | 0.892 ppt |
| 2023-12-07 | 2.22 ppt |