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EWG's Tap Water Database — 2021 UPDATE

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Perfluoroheptanoic acid (PFHPA)

Prattville

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

 

25

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.60 ppt253ND - 20.0 ppt
2015N/A00N/A
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
2014-06-243052199ND
2014-06-243052114ND
2014-06-243052186ND
2014-06-243052316ND
2014-06-243052132ND
2014-06-243052071ND
2014-06-253052822ND
2014-06-253052961ND
2014-06-253052952ND
2014-06-253052919ND
2014-06-253052831ND
2014-06-253052868ND
2014-09-293117464ND
2014-12-163157275ND
2014-12-163157380ND
2014-12-163157257ND
2014-12-16315690120.0 ppt
2014-12-163157134ND
2014-12-163157343ND
2014-12-183159391ND
2014-12-18315943010.00 ppt
2014-12-183159282ND
2014-12-183159413ND
2014-12-183159242ND
2014-12-18315940010.00 ppt