Know Your Environment. Protect Your Health.

Perfluoroheptanoic acid (PFHPA)

San Antonio Water Company

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

2

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
2019ND90ND
2020ND30ND
2021N/A00N/A
2022ND10ND
20235.10 ppt32ND - 9.30 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 Lab ID Result
2019-06-11CA3610085_003_003-201906110854ND
2019-06-11CA3610085_004_004-201906110836ND
2019-06-11CA3610085_011_011-201906110842ND
2019-09-03CA3610085_003_003-201909030939ND
2019-09-03CA3610085_004_004-201909030946ND
2019-09-03CA3610085_011_011-201909030950ND
2019-12-11CA3610085_003_003-201912111030ND
2019-12-11CA3610085_004_004-201912111040ND
2019-12-11CA3610085_011_011-201912111037ND
2020-03-03CA3610085_003_003-202003031000ND
2020-03-03CA3610085_011_011-202003031020ND
2020-03-03CA3610085_004_004-202003030950ND
2022-11-29CA3610085_021_021-202211290922ND
2023-04-20CA3610085_021_021-202304201200ND
2023-07-11CA3610085_021_021-2023071112006.00 ppt
2023-10-17CA3610085_021_021-2023101710459.30 ppt