Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Perfluoroheptanoic acid (PFHPA)

Ridgewood Water

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

 

52

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND480ND
2015ND40ND
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
2014-06-25201406260460AMND
2014-06-25201406260430AMND
2014-06-25201406260471AMND
2014-06-25201406260464AMND
2014-06-25201406260442AMND
2014-06-25201406260488AMND
2014-06-25201406260450AMND
2014-06-25201406260486AMND
2014-06-25201406260440AMND
2014-06-25201406260482AMND
2014-06-25201406260462AMND
2014-06-25201406260484AMND
2014-06-25201406260368AMND
2014-06-25201406260454AMND
2014-06-25201406260438AMND
2014-06-30201407010192AMND
2014-06-30201407010155AMND
2014-06-30201407010210AMND
2014-06-30201407010140AMND
2014-06-30201407010185AMND
2014-06-30201407010208AMND
2014-06-30201407010212AMND
2014-06-30201407010200AMND
2014-06-30201407010206AMND
2014-06-30201407010202AMND
2014-08-06201408070359AMND
2014-12-15201412160731AMND
2014-12-15201412160710AMND
2014-12-15201412160366AMND
2014-12-15201412160712AMND
2014-12-15201412160312AMND
2014-12-15201412160614AMND
2014-12-15201412160703AMND
2014-12-15201412160626AMND
2014-12-17201412180307AMND
2014-12-17201412180314AMND
2014-12-17201412180335AMND
2014-12-17201412180430AMND
2014-12-17201412180398AMND
2014-12-17201412180416AMND
2014-12-17201412180364AMND
2014-12-28201412300450AMND
2014-12-29201412300394AMND
2014-12-29201412300448AMND
2014-12-29201412300488AMND
2014-12-29201412300480AMND
2014-12-29201412300468AMND
2014-12-29201412300485AMND
2015-06-04201506050454AMND
2015-06-04201506050201AMND
2015-06-04201506050379AMND
2015-06-04201506050442AMND