Know Your Environment. Protect Your Health.

Perfluoroheptanoic acid (PFHPA)

Douglas Water Department

Perfluoroheptanoic 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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
20210.789 ppt65ND - 1.19 ppt
20220.598 ppt64ND - 1.02 ppt
20231.24 ppt111.24 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 perfluoroheptanoic acid was defined by EPA's recommended application of the toxicity value for PFHxA published in the Integrated Risk Information System’s toxicological review. This health guideline harm to fetal growth and child development.

ppt = parts per trillion

All test results

Date Result
2021-05-171.06 ppt
2021-05-170.818 ppt
2021-05-170.598 ppt
2021-05-17ND
2021-05-171.07 ppt
2021-05-171.19 ppt
2022-01-041.02 ppt
2022-01-04ND
2022-04-050.860 ppt
2022-04-05ND
2022-07-060.990 ppt
2022-07-060.720 ppt
2023-08-211.24 ppt