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EWG's Tap Water Database — 2021 UPDATE

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Perfluoroheptanoic acid (PFHPA)

City of White Settlement

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.

MORE ABOUT THIS CONTAMINANT

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND10ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppt = parts per trillion

State and national drinking water standards and health guidelines

EWG Health Guideline 1 ppt

The EWG Health Guideline of 1 ppt for perfluoroheptanoic acid was defined by EWG based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water. This health guideline applies to the entire class of PFAS detected in water.

ppt = parts per trillion

All test results

Date Lab ID Result
2014-05-19Q1416752013ND
2014-05-19Q1416752011ND
2014-05-19Q1416752009ND
2014-05-19Q1416752003ND
2014-05-19Q1416752015ND
2014-05-19Q1416752001ND
2014-05-19Q1416752007ND
2014-05-19Q1416752005ND
2014-08-12Q1435369001ND
2014-11-18Q1456335005ND
2014-11-18Q1456335003ND
2014-11-18Q1456335007ND
2014-11-18Q1456335001ND
2014-11-18Q1456335011ND
2014-11-18Q1456335009ND
2014-11-18Q1456335013ND
2015-02-18Q1506445001ND