Know Your Environment. Protect Your Health.

Perfluoroheptanoic acid (PFHPA)

South Grafton Water District

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.

 

41

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
20210.795 ppt75ND - 1.57 ppt
20220.864 ppt1711ND - 3.43 ppt
20230.680 ppt1712ND - 1.21 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
2021-10-280.860 ppt
2021-10-28ND
2021-10-280.816 ppt
2021-10-281.34 ppt
2021-12-071.57 ppt
2021-12-07ND
2021-12-070.980 ppt
2022-01-130.777 ppt
2022-01-130.831 ppt
2022-01-131.39 ppt
2022-01-13ND
2022-04-08ND
2022-04-080.820 ppt
2022-04-080.705 ppt
2022-04-08ND
2022-04-080.863 ppt
2022-04-08ND
2022-07-07ND
2022-07-071.03 ppt
2022-07-07ND
2022-10-123.28 ppt
2022-10-120.767 ppt
2022-10-120.803 ppt
2022-11-083.43 ppt
2023-01-24ND
2023-01-241.01 ppt
2023-02-270.864 ppt
2023-03-280.704 ppt
2023-04-251.21 ppt
2023-04-25ND
2023-05-160.699 ppt
2023-06-271.18 ppt
2023-07-26ND
2023-07-260.893 ppt
2023-08-220.954 ppt
2023-09-191.14 ppt
2023-10-200.799 ppt
2023-10-20ND
2023-11-21ND
2023-11-210.990 ppt
2023-12-121.12 ppt