Perfluorohexanoic Acid (PFHxA)
Devens Massdevelopment
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 | 5.83 ppt | 7 | 6 | ND - 13.0 ppt |
| 2019 | 1.06 ppt | 28 | 6 | ND - 8.13 ppt |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 3.42 ppt | 193 | 134 | ND - 18.0 ppt |
| 2022 | 1.99 ppt | 171 | 88 | ND - 13.9 ppt |
| 2023 | 1.58 ppt | 129 | 56 | ND - 14.0 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 |
|---|---|
| 2018-02-27 | 13.0 ppt |
| 2018-05-14 | 8.40 ppt |
| 2018-05-14 | 2.30 ppt |
| 2018-08-03 | 7.64 ppt |
| 2018-08-03 | 2.00 ppt |
| 2018-10-25 | 7.48 ppt |
| 2018-10-25 | ND |
| 2019-02-20 | 8.13 ppt |
| 2019-02-20 | 2.50 ppt |
| 2019-05-21 | 6.90 ppt |
| 2019-05-21 | 5.12 ppt |
| 2019-08-02 | ND |
| 2019-08-20 | 5.96 ppt |
| 2019-08-20 | ND |
| 2019-09-03 | ND |
| 2019-09-03 | ND |
| 2019-09-18 | ND |
| 2019-09-18 | ND |
| 2019-09-25 | ND |
| 2019-10-02 | ND |
| 2019-10-02 | ND |
| 2019-10-09 | ND |
| 2019-10-15 | ND |
| 2019-10-15 | ND |
| 2019-10-23 | ND |
| 2019-10-30 | ND |
| 2019-10-30 | ND |
| 2019-11-06 | ND |
| 2019-11-13 | ND |
| 2019-11-13 | 1.13 ppt |
| 2019-11-20 | ND |
| 2019-11-25 | ND |
| 2019-11-25 | ND |
| 2019-12-04 | ND |
| 2019-12-18 | ND |
| 2021-01-06 | ND |
| 2021-01-06 | ND |
| 2021-01-06 | 1.20 ppt |
| 2021-01-06 | ND |
| 2021-01-06 | 14.4 ppt |
| 2021-01-06 | 7.40 ppt |
| 2021-01-06 | 7.60 ppt |
| 2021-01-06 | ND |
| 2021-01-06 | 5.30 ppt |
| 2021-01-06 | 7.90 ppt |
| 2021-01-06 | 3.90 ppt |
| 2021-01-06 | 3.30 ppt |
| 2021-01-06 | 3.00 ppt |
| 2021-01-06 | 7.50 ppt |
| 2021-01-13 | 1.80 ppt |
| 2021-01-13 | ND |
| 2021-01-13 | 1.70 ppt |
| 2021-01-13 | ND |
| 2021-01-13 | ND |
| 2021-01-13 | 3.00 ppt |
| 2021-02-03 | 9.65 ppt |
| 2021-02-03 | 1.56 ppt |
| 2021-02-03 | ND |
| 2021-02-03 | ND |
| 2021-02-03 | ND |
| 2021-02-03 | 7.46 ppt |
| 2021-02-03 | 5.05 ppt |
| 2021-02-03 | 6.92 ppt |
| 2021-02-03 | 17.2 ppt |
| 2021-02-03 | 0.681 ppt |
| 2021-02-03 | 4.55 ppt |
| 2021-02-17 | ND |
| 2021-02-17 | 2.22 ppt |
| 2021-02-17 | 18.0 ppt |
| 2021-02-24 | 3.69 ppt |
| 2021-02-24 | ND |
| 2021-02-24 | 0.818 ppt |
| 2021-02-24 | 1.42 ppt |
| 2021-02-24 | ND |
| 2021-02-24 | ND |
| 2021-02-24 | 2.25 ppt |
| 2021-03-02 | 5.94 ppt |
| 2021-03-02 | ND |
| 2021-03-02 | 2.31 ppt |
| 2021-03-02 | 16.7 ppt |
| 2021-03-02 | ND |
| 2021-03-02 | 1.75 ppt |
| 2021-03-02 | 8.10 ppt |
| 2021-03-02 | ND |
| 2021-03-02 | 5.10 ppt |
| 2021-03-10 | 4.05 ppt |
| 2021-03-10 | ND |
| 2021-03-10 | ND |
| 2021-03-10 | 0.702 ppt |
| 2021-03-10 | ND |
| 2021-03-10 | 0.842 ppt |
| 2021-03-10 | 1.10 ppt |
| 2021-03-17 | 16.0 ppt |
| 2021-03-17 | 4.21 ppt |
| 2021-03-17 | ND |
| 2021-03-24 | ND |
| 2021-03-24 | ND |
| 2021-03-24 | 1.02 ppt |
| 2021-03-24 | 3.16 ppt |
| 2021-03-24 | ND |
| 2021-03-24 | ND |
| 2021-03-24 | 1.62 ppt |
| 2021-03-31 | 14.0 ppt |
| 2021-03-31 | 5.80 ppt |
| 2021-03-31 | ND |
| 2021-03-31 | ND |
| 2021-04-08 | ND |
| 2021-04-08 | ND |
| 2021-04-08 | 0.704 ppt |
| 2021-04-08 | ND |
| 2021-04-19 | ND |
| 2021-06-02 | 1.15 ppt |
| 2021-06-02 | 0.836 ppt |
| 2021-06-02 | 1.32 ppt |
| 2021-06-02 | ND |
| 2021-06-02 | ND |
| 2021-06-02 | 2.65 ppt |
| 2021-06-02 | 0.930 ppt |
| 2021-06-09 | 6.56 ppt |
| 2021-06-09 | 11.2 ppt |
| 2021-06-09 | 2.24 ppt |
| 2021-06-16 | ND |
| 2021-06-16 | ND |
| 2021-06-16 | 0.672 ppt |
| 2021-06-16 | 1.04 ppt |
| 2021-06-16 | 0.887 ppt |
| 2021-06-23 | ND |
| 2021-06-23 | 6.71 ppt |
| 2021-06-23 | 1.40 ppt |
| 2021-06-23 | ND |
| 2021-06-23 | 13.0 ppt |
| 2021-07-07 | 2.94 ppt |
| 2021-07-07 | 8.86 ppt |
| 2021-07-07 | 8.21 ppt |
| 2021-07-07 | ND |
| 2021-07-07 | 7.51 ppt |
| 2021-07-07 | 9.15 ppt |
| 2021-07-07 | 4.34 ppt |
| 2021-07-07 | 7.50 ppt |
| 2021-07-07 | 8.58 ppt |
| 2021-07-07 | 15.6 ppt |
| 2021-07-07 | 6.63 ppt |
| 2021-07-07 | 8.77 ppt |
| 2021-07-07 | 8.77 ppt |
| 2021-07-07 | 8.44 ppt |
| 2021-07-14 | 0.915 ppt |
| 2021-07-14 | 3.14 ppt |
| 2021-07-14 | 0.943 ppt |
| 2021-07-14 | ND |
| 2021-07-14 | 0.713 ppt |
| 2021-07-14 | ND |
| 2021-07-21 | 13.5 ppt |
| 2021-07-21 | ND |
| 2021-07-21 | 2.85 ppt |
| 2021-07-21 | 0.666 ppt |
| 2021-07-21 | 8.58 ppt |
| 2021-07-28 | 1.18 ppt |
| 2021-07-28 | 0.800 ppt |
| 2021-07-28 | 0.781 ppt |
| 2021-07-28 | ND |
| 2021-07-28 | 2.22 ppt |
| 2021-07-28 | ND |
| 2021-07-28 | 1.59 ppt |
| 2021-08-05 | 2.44 ppt |
| 2021-08-05 | 5.79 ppt |
| 2021-08-05 | 5.72 ppt |
| 2021-08-05 | 7.56 ppt |
| 2021-08-11 | 1.53 ppt |
| 2021-08-11 | ND |
| 2021-08-11 | ND |
| 2021-08-11 | 0.905 ppt |
| 2021-08-11 | 2.08 ppt |
| 2021-08-11 | 1.16 ppt |
| 2021-08-11 | ND |
| 2021-08-18 | 0.934 ppt |
| 2021-08-18 | 3.83 ppt |
| 2021-08-18 | 1.75 ppt |
| 2021-08-18 | 11.9 ppt |
| 2021-08-18 | 1.37 ppt |
| 2021-08-25 | 1.11 ppt |
| 2021-08-25 | 1.33 ppt |
| 2021-08-25 | ND |
| 2021-08-25 | 1.62 ppt |
| 2021-08-25 | 1.94 ppt |
| 2021-08-25 | ND |
| 2021-08-25 | 0.888 ppt |
| 2021-09-08 | ND |
| 2021-09-08 | 1.24 ppt |
| 2021-09-08 | ND |
| 2021-09-08 | ND |
| 2021-09-08 | 1.56 ppt |
| 2021-09-08 | 2.29 ppt |
| 2021-09-08 | ND |
| 2021-10-06 | ND |
| 2021-10-06 | 9.91 ppt |
| 2021-10-06 | ND |
| 2021-10-06 | 9.83 ppt |
| 2021-10-06 | 10.3 ppt |
| 2021-10-06 | 3.45 ppt |
| 2021-10-06 | 9.70 ppt |
| 2021-10-06 | 0.968 ppt |
| 2021-10-06 | 1.13 ppt |
| 2021-10-06 | 0.968 ppt |
| 2021-10-06 | 8.53 ppt |
| 2021-10-06 | 9.32 ppt |
| 2021-10-06 | 1.60 ppt |
| 2021-10-06 | 2.21 ppt |
| 2021-10-06 | 1.28 ppt |
| 2021-10-06 | 4.75 ppt |
| 2021-10-06 | 0.864 ppt |
| 2021-10-06 | 7.96 ppt |
| 2021-10-06 | 8.35 ppt |
| 2021-10-06 | 9.61 ppt |
| 2021-12-02 | 9.77 ppt |
| 2021-12-02 | 10.2 ppt |
| 2021-12-02 | 10.4 ppt |
| 2021-12-02 | 7.89 ppt |
| 2021-12-02 | 10.3 ppt |
| 2021-12-02 | 3.68 ppt |
| 2021-12-02 | 7.34 ppt |
| 2021-12-08 | 1.63 ppt |
| 2021-12-08 | 1.48 ppt |
| 2021-12-08 | ND |
| 2021-12-08 | ND |
| 2021-12-08 | ND |
| 2021-12-08 | ND |
| 2021-12-08 | 1.10 ppt |
| 2021-12-08 | ND |
| 2022-01-05 | 1.54 ppt |
| 2022-01-05 | 1.18 ppt |
| 2022-01-05 | ND |
| 2022-01-05 | ND |
| 2022-01-05 | 13.9 ppt |
| 2022-01-05 | ND |
| 2022-01-05 | 1.07 ppt |
| 2022-01-05 | ND |
| 2022-01-05 | ND |
| 2022-01-12 | 9.13 ppt |
| 2022-01-12 | 7.37 ppt |
| 2022-01-12 | 9.71 ppt |
| 2022-01-12 | 9.31 ppt |
| 2022-01-12 | 3.70 ppt |
| 2022-01-12 | 5.80 ppt |
| 2022-01-12 | 9.27 ppt |
| 2022-01-12 | 8.79 ppt |
| 2022-02-02 | ND |
| 2022-02-02 | 1.27 ppt |
| 2022-02-02 | ND |
| 2022-02-02 | 1.33 ppt |
| 2022-02-02 | ND |
| 2022-02-02 | 0.840 ppt |
| 2022-02-02 | 2.93 ppt |
| 2022-02-02 | ND |
| 2022-02-09 | 8.92 ppt |
| 2022-02-09 | 4.63 ppt |
| 2022-02-09 | 9.03 ppt |
| 2022-02-09 | 8.54 ppt |
| 2022-02-09 | 8.95 ppt |
| 2022-02-09 | 8.56 ppt |
| 2022-02-09 | 5.42 ppt |
| 2022-03-09 | 1.20 ppt |
| 2022-03-09 | 1.20 ppt |
| 2022-03-09 | 1.10 ppt |
| 2022-03-09 | ND |
| 2022-03-09 | ND |
| 2022-03-09 | 3.70 ppt |
| 2022-03-09 | ND |
| 2022-03-09 | ND |
| 2022-03-16 | 7.40 ppt |
| 2022-03-16 | 12.0 ppt |
| 2022-03-16 | 8.70 ppt |
| 2022-03-16 | 4.40 ppt |
| 2022-03-16 | 5.10 ppt |
| 2022-03-16 | 10.00 ppt |
| 2022-03-16 | 11.0 ppt |
| 2022-04-13 | ND |
| 2022-04-13 | 1.80 ppt |
| 2022-04-13 | 5.10 ppt |
| 2022-04-13 | 0.930 ppt |
| 2022-04-13 | 0.930 ppt |
| 2022-04-13 | ND |
| 2022-04-13 | ND |
| 2022-04-13 | ND |
| 2022-04-19 | ND |
| 2022-04-19 | ND |
| 2022-04-19 | ND |
| 2022-04-19 | ND |
| 2022-04-19 | 1.40 ppt |
| 2022-04-19 | ND |
| 2022-04-19 | ND |
| 2022-05-04 | 1.30 ppt |
| 2022-05-04 | 1.90 ppt |
| 2022-05-04 | ND |
| 2022-05-04 | 6.90 ppt |
| 2022-05-04 | 0.840 ppt |
| 2022-05-04 | ND |
| 2022-05-04 | ND |
| 2022-05-04 | 0.690 ppt |
| 2022-05-16 | ND |
| 2022-05-16 | 1.70 ppt |
| 2022-05-16 | ND |
| 2022-05-16 | ND |
| 2022-05-16 | ND |
| 2022-05-16 | ND |
| 2022-05-16 | ND |
| 2022-05-27 | ND |
| 2022-05-27 | 13.0 ppt |
| 2022-06-08 | 6.00 ppt |
| 2022-06-08 | 1.40 ppt |
| 2022-06-08 | 1.80 ppt |
| 2022-06-08 | ND |
| 2022-06-08 | ND |
| 2022-06-08 | ND |
| 2022-06-08 | 1.50 ppt |
| 2022-06-08 | 4.00 ppt |
| 2022-06-14 | ND |
| 2022-06-14 | ND |
| 2022-06-14 | ND |
| 2022-06-14 | ND |
| 2022-06-14 | ND |
| 2022-06-14 | ND |
| 2022-06-14 | 0.880 ppt |
| 2022-07-13 | 1.90 ppt |
| 2022-07-13 | ND |
| 2022-07-13 | ND |
| 2022-07-13 | 1.80 ppt |
| 2022-07-13 | ND |
| 2022-07-20 | ND |
| 2022-07-20 | ND |
| 2022-07-20 | ND |
| 2022-07-20 | 0.940 ppt |
| 2022-07-20 | ND |
| 2022-07-20 | 0.720 ppt |
| 2022-08-03 | 1.90 ppt |
| 2022-08-03 | ND |
| 2022-08-03 | ND |
| 2022-08-03 | ND |
| 2022-08-03 | 1.70 ppt |
| 2022-08-03 | ND |
| 2022-08-03 | ND |
| 2022-08-18 | 0.600 ppt |
| 2022-08-18 | ND |
| 2022-08-18 | 2.00 ppt |
| 2022-08-18 | 4.20 ppt |
| 2022-08-18 | ND |
| 2022-08-18 | 2.90 ppt |
| 2022-08-18 | ND |
| 2022-09-01 | 0.720 ppt |
| 2022-09-01 | ND |
| 2022-09-07 | ND |
| 2022-09-07 | ND |
| 2022-09-07 | 1.50 ppt |
| 2022-09-07 | ND |
| 2022-09-07 | ND |
| 2022-09-07 | ND |
| 2022-09-07 | 1.70 ppt |
| 2022-09-14 | ND |
| 2022-09-14 | ND |
| 2022-09-14 | ND |
| 2022-09-14 | 4.30 ppt |
| 2022-09-14 | 0.690 ppt |
| 2022-09-14 | 2.20 ppt |
| 2022-10-05 | 1.50 ppt |
| 2022-10-05 | ND |
| 2022-10-05 | 1.10 ppt |
| 2022-10-05 | ND |
| 2022-10-12 | 5.00 ppt |
| 2022-10-12 | 2.30 ppt |
| 2022-10-12 | 5.00 ppt |
| 2022-10-12 | 0.780 ppt |
| 2022-10-12 | ND |
| 2022-10-12 | ND |
| 2022-10-12 | ND |
| 2022-11-02 | ND |
| 2022-11-02 | ND |
| 2022-11-02 | ND |
| 2022-11-02 | ND |
| 2022-11-02 | 1.10 ppt |
| 2022-11-02 | 1.80 ppt |
| 2022-11-10 | 6.80 ppt |
| 2022-11-10 | ND |
| 2022-11-10 | ND |
| 2022-11-10 | 3.20 ppt |
| 2022-11-10 | 6.40 ppt |
| 2022-11-10 | 0.920 ppt |
| 2022-11-10 | ND |
| 2022-12-07 | 1.20 ppt |
| 2022-12-07 | 4.40 ppt |
| 2022-12-07 | ND |
| 2022-12-07 | 4.70 ppt |
| 2022-12-07 | ND |
| 2022-12-07 | ND |
| 2022-12-07 | 2.10 ppt |
| 2022-12-07 | ND |
| 2022-12-07 | 0.770 ppt |
| 2022-12-07 | 0.660 ppt |
| 2022-12-07 | ND |
| 2022-12-07 | 0.620 ppt |
| 2022-12-07 | 0.870 ppt |
| 2023-01-11 | ND |
| 2023-01-11 | 14.0 ppt |
| 2023-01-11 | ND |
| 2023-01-18 | 3.90 ppt |
| 2023-01-18 | 6.00 ppt |
| 2023-01-18 | 8.00 ppt |
| 2023-01-18 | 10.00 ppt |
| 2023-01-18 | 1.30 ppt |
| 2023-01-18 | 0.890 ppt |
| 2023-01-18 | 1.40 ppt |
| 2023-01-18 | 1.40 ppt |
| 2023-02-03 | ND |
| 2023-02-03 | ND |
| 2023-02-14 | 8.90 ppt |
| 2023-02-14 | 1.90 ppt |
| 2023-02-14 | 2.10 ppt |
| 2023-02-14 | 5.90 ppt |
| 2023-02-14 | 7.40 ppt |
| 2023-02-14 | 1.70 ppt |
| 2023-02-14 | 2.30 ppt |
| 2023-02-24 | ND |
| 2023-02-24 | 3.30 ppt |
| 2023-02-24 | ND |
| 2023-02-24 | 2.30 ppt |
| 2023-02-24 | ND |
| 2023-03-01 | ND |
| 2023-03-01 | ND |
| 2023-03-01 | ND |
| 2023-03-01 | 1.60 ppt |
| 2023-03-01 | ND |
| 2023-03-01 | ND |
| 2023-03-08 | 7.60 ppt |
| 2023-03-08 | 9.60 ppt |
| 2023-03-08 | 1.80 ppt |
| 2023-03-08 | 5.60 ppt |
| 2023-03-08 | 2.00 ppt |
| 2023-03-08 | 2.60 ppt |
| 2023-03-08 | 2.30 ppt |
| 2023-04-04 | ND |
| 2023-04-04 | ND |
| 2023-04-04 | ND |
| 2023-04-06 | 5.50 ppt |
| 2023-04-06 | 2.46 ppt |
| 2023-04-06 | 9.92 ppt |
| 2023-04-06 | 2.12 ppt |
| 2023-04-06 | 2.82 ppt |
| 2023-04-06 | 8.07 ppt |
| 2023-04-06 | 1.84 ppt |
| 2023-04-19 | 1.79 ppt |
| 2023-04-19 | ND |
| 2023-04-19 | ND |
| 2023-04-19 | ND |
| 2023-04-19 | ND |
| 2023-04-19 | ND |
| 2023-04-28 | ND |
| 2023-04-28 | ND |
| 2023-04-28 | 13.0 ppt |
| 2023-05-03 | ND |
| 2023-05-03 | ND |
| 2023-05-03 | 2.03 ppt |
| 2023-05-12 | ND |
| 2023-05-26 | ND |
| 2023-06-07 | ND |
| 2023-06-07 | 2.12 ppt |
| 2023-06-07 | 0.598 ppt |
| 2023-06-07 | ND |
| 2023-06-09 | ND |
| 2023-06-23 | ND |
| 2023-07-07 | ND |
| 2023-07-11 | ND |
| 2023-07-11 | ND |
| 2023-07-11 | 1.96 ppt |
| 2023-07-11 | 0.690 ppt |
| 2023-07-18 | ND |
| 2023-07-21 | 1.56 ppt |
| 2023-08-04 | ND |
| 2023-08-08 | 0.760 ppt |
| 2023-08-08 | ND |
| 2023-08-08 | ND |
| 2023-08-08 | 1.60 ppt |
| 2023-08-08 | 1.60 ppt |
| 2023-08-18 | ND |
| 2023-09-01 | ND |
| 2023-09-01 | ND |
| 2023-09-19 | ND |
| 2023-09-19 | ND |
| 2023-09-19 | ND |
| 2023-09-19 | ND |
| 2023-09-19 | 2.40 ppt |
| 2023-09-19 | ND |
| 2023-09-29 | ND |
| 2023-09-29 | 2.00 ppt |
| 2023-10-04 | ND |
| 2023-10-04 | ND |
| 2023-10-05 | 6.00 ppt |
| 2023-10-05 | ND |
| 2023-10-13 | ND |
| 2023-10-19 | 2.80 ppt |
| 2023-10-19 | ND |
| 2023-10-19 | ND |
| 2023-10-19 | ND |
| 2023-10-27 | 2.40 ppt |
| 2023-10-27 | ND |
| 2023-11-07 | 3.50 ppt |
| 2023-11-07 | ND |
| 2023-11-07 | ND |
| 2023-11-07 | 1.60 ppt |
| 2023-11-09 | 0.670 ppt |
| 2023-11-09 | 3.00 ppt |
| 2023-11-09 | ND |
| 2023-11-29 | ND |
| 2023-11-29 | ND |
| 2023-11-29 | ND |
| 2023-11-29 | ND |
| 2023-11-29 | ND |
| 2023-11-29 | ND |
| 2023-11-29 | ND |
| 2023-11-29 | ND |
| 2023-11-29 | ND |
| 2023-12-08 | 0.340 ppt |
| 2023-12-14 | ND |
| 2023-12-14 | ND |
| 2023-12-14 | ND |
| 2023-12-14 | ND |
| 2023-12-14 | ND |
| 2023-12-14 | ND |
| 2023-12-14 | ND |
| 2023-12-22 | 0.370 ppt |
| 2023-12-22 | 2.70 ppt |