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EWG's Tap Water Database — 2021 UPDATE

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Perfluoroheptanoic acid (PFHPA)

Iredell Water Corporation

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

 

64

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND160ND
2014ND240ND
2015ND240ND
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
2013-04-23201304250466AMND
2013-04-23201304250497AMND
2013-04-23201304250500AMND
2013-04-23201304250464AMND
2013-04-23201304250427AMND
2013-04-23201304250457AMND
2013-04-23201304250512AMND
2013-04-23201304250510AMND
2013-10-21201310220072AMND
2013-10-21201310220063AMND
2013-10-21201310220234AMND
2013-10-21201310220149AMND
2013-10-21201310220213AMND
2013-10-21201310220221AMND
2013-10-21201310220199AMND
2013-10-21201310220238AMND
2014-04-28201404290225AMND
2014-04-28201404290278AMND
2014-04-28201404290222AMND
2014-04-28201404290284AMND
2014-04-28201404290263AMND
2014-04-28201404290241AMND
2014-04-28201404290268AMND
2014-04-28201404290270AMND
2014-04-28201404300415AMND
2014-04-28201404290292AMND
2014-04-28201404290227AMND
2014-04-28201404290276AMND
2014-10-28201410290397AMND
2014-10-28201410290450AMND
2014-10-28201410290549AMND
2014-10-28201410290528AMND
2014-10-28201410290517AMND
2014-10-28201410290495AMND
2014-10-28201410290493AMND
2014-10-28201410290417AMND
2014-10-28201410290474AMND
2014-10-28201410290539AMND
2014-10-28201410290452AMND
2014-11-19201411200334AMND
2015-04-13201504140610AMND
2015-04-13201504140775AMND
2015-04-13201504140625AMND
2015-04-13201504140759AMND
2015-04-13201504140693AMND
2015-04-13201504140689AMND
2015-04-14201504150376AMND
2015-04-14201504150517AMND
2015-04-14201504150407AMND
2015-04-14201504150541AMND
2015-04-14201504150443AMND
2015-04-14201504150526AMND
2015-10-28201510290362AMND
2015-10-28201510300303AMND
2015-10-28201510290416AMND
2015-10-28201510290392AMND
2015-10-28201510290342AMND
2015-10-28201510300260AMND
2015-10-29201510300309AMND
2015-10-29201510300332AMND
2015-10-29201510300267AMND
2015-10-29201510300264AMND
2015-10-29201510300307AMND
2015-10-29201510300305AMND