Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Perfluoroheptanoic acid (PFHPA)

Riverhead WD

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

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND110ND
2014ND110ND
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
2013-09-18201309200382AMND
2013-09-18201309200390AMND
2013-09-18201309200392AMND
2013-09-18201309200394AMND
2013-09-18201309200386AMND
2013-09-18201309200398AMND
2013-09-18201309200396AMND
2013-09-18201309200384AMND
2013-09-18201309200388AMND
2013-09-20201309240328AMND
2013-09-20201309240330AMND
2014-03-1935131088001AMND
2014-03-1935131088003AMND
2014-03-1935131088005AMND
2014-03-1935131088007AMND
2014-03-2135132089005AMND
2014-03-2135132089001AMND
2014-03-2135132089003AMND
2014-03-2135132089006AMND
2014-03-2635131983001AMND
2014-03-2635131983003AMND
2014-03-2835132127001AMND