Know Your Environment. Protect Your Health.

Perfluorohexanoic Acid (PFHxA)

South Grafton 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.

 

41

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
20210.801 ppt75ND - 1.57 ppt
20220.912 ppt1710ND - 4.44 ppt
20230.730 ppt1712ND - 1.42 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
2021-10-28ND
2021-10-280.857 ppt
2021-10-281.26 ppt
2021-10-280.819 ppt
2021-12-071.10 ppt
2021-12-07ND
2021-12-071.57 ppt
2022-01-130.696 ppt
2022-01-130.914 ppt
2022-01-131.51 ppt
2022-01-13ND
2022-04-08ND
2022-04-080.820 ppt
2022-04-08ND
2022-04-08ND
2022-04-080.863 ppt
2022-04-08ND
2022-07-07ND
2022-07-071.11 ppt
2022-07-07ND
2022-10-123.50 ppt
2022-10-120.847 ppt
2022-10-120.803 ppt
2022-11-084.44 ppt
2023-01-24ND
2023-01-241.09 ppt
2023-02-270.987 ppt
2023-03-280.786 ppt
2023-04-251.42 ppt
2023-04-25ND
2023-05-160.781 ppt
2023-06-271.39 ppt
2023-07-26ND
2023-07-260.967 ppt
2023-08-221.06 ppt
2023-09-191.29 ppt
2023-10-200.788 ppt
2023-10-20ND
2023-11-21ND
2023-11-210.898 ppt
2023-12-120.960 ppt