Know Your Environment. Protect Your Health.

Perfluorohexane sulfonate (PFHXS)

Topsfield 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.

 

84

Samples

0

Samples exceeding legal limit (MCL)

80

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
20201.60 ppt441.07 ppt - 2.33 ppt
20211.36 ppt30300.950 ppt - 2.00 ppt
20221.30 ppt26260.829 ppt - 2.26 ppt
20231.49 ppt20200.802 ppt - 2.90 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
2014-02-12ND
2014-02-12ND
2014-08-18ND
2014-08-18ND
2020-02-191.23 ppt
2020-02-192.33 ppt
2020-07-171.76 ppt
2020-07-171.07 ppt
2021-01-221.36 ppt
2021-01-221.39 ppt
2021-01-291.20 ppt
2021-01-290.960 ppt
2021-01-290.950 ppt
2021-02-031.50 ppt
2021-02-031.20 ppt
2021-02-031.50 ppt
2021-03-031.50 ppt
2021-03-031.60 ppt
2021-04-141.30 ppt
2021-04-141.40 ppt
2021-07-020.960 ppt
2021-07-021.20 ppt
2021-07-021.90 ppt
2021-08-061.000 ppt
2021-08-061.40 ppt
2021-08-061.90 ppt
2021-09-101.90 ppt
2021-09-101.10 ppt
2021-09-101.40 ppt
2021-10-291.20 ppt
2021-10-291.40 ppt
2021-10-292.00 ppt
2021-11-050.990 ppt
2021-11-051.10 ppt
2021-11-051.70 ppt
2021-12-031.20 ppt
2021-12-031.70 ppt
2021-12-031.000 ppt
2022-01-131.46 ppt
2022-01-130.933 ppt
2022-01-130.960 ppt
2022-01-131.60 ppt
2022-01-131.20 ppt
2022-02-171.20 ppt
2022-02-171.52 ppt
2022-02-171.07 ppt
2022-02-171.50 ppt
2022-02-171.000 ppt
2022-03-111.10 ppt
2022-03-111.40 ppt
2022-03-111.000 ppt
2022-04-141.26 ppt
2022-05-251.22 ppt
2022-06-091.28 ppt
2022-07-141.12 ppt
2022-07-141.29 ppt
2022-07-141.75 ppt
2022-08-111.57 ppt
2022-09-081.73 ppt
2022-10-131.12 ppt
2022-10-132.26 ppt
2022-10-131.13 ppt
2022-11-100.829 ppt
2022-12-081.33 ppt
2023-01-121.55 ppt
2023-01-121.17 ppt
2023-01-122.26 ppt
2023-02-091.51 ppt
2023-03-091.67 ppt
2023-04-131.11 ppt
2023-04-132.90 ppt
2023-04-131.64 ppt
2023-05-111.73 ppt
2023-06-081.46 ppt
2023-07-130.871 ppt
2023-07-131.62 ppt
2023-07-131.17 ppt
2023-08-102.11 ppt
2023-09-141.25 ppt
2023-10-111.15 ppt
2023-11-090.802 ppt
2023-11-091.12 ppt
2023-11-091.55 ppt
2023-12-141.06 ppt