Know Your Environment. Protect Your Health.

Perfluorohexane sulfonate (PFHXS)

Littleton 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.

 

152

Samples

0

Samples exceeding legal limit (MCL)

126

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
20191.00 ppt73ND - 3.21 ppt
20201.34 ppt18180.521 ppt - 2.50 ppt
20211.48 ppt3837ND - 2.72 ppt
20221.22 ppt5140ND - 3.75 ppt
20231.02 ppt3728ND - 3.11 ppt
2024ND10ND

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
2019-06-19ND
2019-08-06ND
2019-08-063.21 ppt
2019-08-06ND
2019-08-06ND
2019-09-233.09 ppt
2019-12-090.720 ppt
2020-07-280.700 ppt
2020-07-282.50 ppt
2020-07-281.60 ppt
2020-10-150.645 ppt
2020-10-151.99 ppt
2020-10-150.693 ppt
2020-10-150.780 ppt
2020-10-150.790 ppt
2020-10-150.521 ppt
2020-10-152.28 ppt
2020-10-150.685 ppt
2020-11-041.64 ppt
2020-11-041.64 ppt
2020-11-040.644 ppt
2020-11-042.23 ppt
2020-12-022.50 ppt
2020-12-021.58 ppt
2020-12-020.774 ppt
2021-01-122.10 ppt
2021-01-120.745 ppt
2021-01-121.90 ppt
2021-02-082.16 ppt
2021-02-080.816 ppt
2021-02-081.25 ppt
2021-03-172.63 ppt
2021-03-171.64 ppt
2021-03-171.64 ppt
2021-03-171.09 ppt
2021-03-171.09 ppt
2021-04-051.57 ppt
2021-04-052.72 ppt
2021-04-050.981 ppt
2021-05-122.29 ppt
2021-05-120.817 ppt
2021-05-121.56 ppt
2021-06-081.73 ppt
2021-06-080.963 ppt
2021-06-082.30 ppt
2021-07-211.47 ppt
2021-07-210.840 ppt
2021-07-212.27 ppt
2021-09-081.78 ppt
2021-09-080.781 ppt
2021-09-082.62 ppt
2021-10-062.54 ppt
2021-10-061.62 ppt
2021-10-060.758 ppt
2021-10-131.18 ppt
2021-10-210.689 ppt
2021-10-280.852 ppt
2021-11-151.23 ppt
2021-11-150.798 ppt
2021-11-152.13 ppt
2021-12-14ND
2021-12-141.49 ppt
2021-12-140.997 ppt
2022-01-111.12 ppt
2022-01-111.56 ppt
2022-01-11ND
2022-01-18ND
2022-02-16ND
2022-02-161.85 ppt
2022-02-161.27 ppt
2022-03-161.14 ppt
2022-03-161.56 ppt
2022-03-16ND
2022-04-201.79 ppt
2022-04-201.73 ppt
2022-04-25ND
2022-04-270.838 ppt
2022-05-161.67 ppt
2022-05-161.31 ppt
2022-05-18ND
2022-05-180.672 ppt
2022-05-180.828 ppt
2022-06-221.29 ppt
2022-06-220.816 ppt
2022-06-221.29 ppt
2022-06-220.666 ppt
2022-07-13ND
2022-07-13ND
2022-07-131.33 ppt
2022-07-131.60 ppt
2022-07-13ND
2022-07-130.701 ppt
2022-08-03ND
2022-08-030.687 ppt
2022-08-031.97 ppt
2022-08-031.39 ppt
2022-09-263.71 ppt
2022-09-262.73 ppt
2022-09-27ND
2022-09-270.775 ppt
2022-10-193.75 ppt
2022-10-190.860 ppt
2022-10-192.27 ppt
2022-10-270.675 ppt
2022-10-270.827 ppt
2022-10-270.638 ppt
2022-11-073.23 ppt
2022-11-072.18 ppt
2022-11-091.39 ppt
2022-11-091.52 ppt
2022-12-201.24 ppt
2022-12-202.31 ppt
2022-12-203.75 ppt
2022-12-201.11 ppt
2023-01-033.05 ppt
2023-01-031.83 ppt
2023-01-24ND
2023-01-240.790 ppt
2023-01-24ND
2023-01-24ND
2023-02-01ND
2023-02-011.88 ppt
2023-03-070.859 ppt
2023-03-070.624 ppt
2023-04-180.636 ppt
2023-04-18ND
2023-04-180.795 ppt
2023-04-180.798 ppt
2023-05-171.60 ppt
2023-05-172.34 ppt
2023-05-170.769 ppt
2023-06-161.57 ppt
2023-06-160.825 ppt
2023-07-25ND
2023-07-25ND
2023-07-253.11 ppt
2023-07-25ND
2023-07-250.970 ppt
2023-07-250.743 ppt
2023-08-211.72 ppt
2023-08-210.726 ppt
2023-09-191.69 ppt
2023-09-191.52 ppt
2023-10-030.713 ppt
2023-10-031.52 ppt
2023-10-032.16 ppt
2023-10-121.39 ppt
2023-11-281.26 ppt
2023-11-281.21 ppt
2023-11-280.653 ppt
2023-12-19ND
2024-07-17ND