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EWG's Tap Water Database — 2021 UPDATE

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Perfluoroheptanoic acid (PFHPA)

Bayleaf Master

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

 

205

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND1040ND
2015ND1010ND
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
2014-09-08201409101000AMND
2014-09-08201409090419AMND
2014-09-08201409090404AMND
2014-09-08201409090438AMND
2014-09-08201409100867AMND
2014-09-08201409100862AMND
2014-09-08201409100785AMND
2014-09-08201409110309AMND
2014-09-08201409090509AMND
2014-09-08201409101010AMND
2014-09-08201409090398AMND
2014-09-10201409110836AMND
2014-09-10201409110641AMND
2014-09-10201409110842AMND
2014-09-10201409110623AMND
2014-09-10201409120792AMND
2014-09-10201409120786AMND
2014-09-10201409110611AMND
2014-09-10201409120849AMND
2014-09-10201409110733AMND
2014-09-10201409120846AMND
2014-09-11201409120824AMND
2014-09-11201409120556AMND
2014-09-11201409120586AMND
2014-09-11201409120566AMND
2014-09-11201409120561AMND
2014-09-15201409160528AMND
2014-09-15201409160508AMND
2014-09-15201409160512AMND
2014-09-15201409170402AMND
2014-09-15201409170392AMND
2014-09-15201409160641AMND
2014-09-15201409160530AMND
2014-09-15201409160280AMND
2014-09-15201409170400AMND
2014-09-15201409160643AMND
2014-09-15201409160517AMND
2014-09-15201409160409AMND
2014-09-15201409170404AMND
2014-09-16201409180294AMND
2014-09-16201409170796AMND
2014-09-16201409170851AMND
2014-09-16201409170769AMND
2014-09-16201409180308AMND
2014-09-16201409170773AMND
2014-09-16201409180359AMND
2014-09-16201409180283AMND
2014-09-16201409180287AMND
2014-09-16201409170859AMND
2014-09-17201409180747AMND
2014-09-17201409190298AMND
2014-09-17201409180597AMND
2014-09-17201409180629AMND
2014-09-17201409180637AMND
2014-09-17201409190240AMND
2014-09-17201409190322AMND
2014-09-17201409180613AMND
2014-09-17201409180731AMND
2014-09-17201409180622AMND
2014-09-17201409190305AMND
2014-09-18201409190439AMND
2014-09-18201409190447AMND
2014-09-18201409190441AMND
2014-09-18201409190437AMND
2014-09-18201409190454AMND
2014-09-18201409190425AMND
2014-09-18201409190422AMND
2014-09-18201409190468AMND
2014-09-18201409190449AMND
2014-09-18201409190431AMND
2014-09-18201409190460AMND
2014-09-22201409230171AMND
2014-09-22201409230393AMND
2014-09-22201409230403AMND
2014-09-22201409230540AMND
2014-09-22201409230391AMND
2014-09-22201409230411AMND
2014-09-22201409230358AMND
2014-09-22201409230408AMND
2014-09-22201409230330AMND
2014-09-22201409230349AMND
2014-09-23201409240562AMND
2014-09-23201409240435AMND
2014-09-23201409240473AMND
2014-09-23201409240549AMND
2014-09-23201409240366AMND
2014-09-23201409240461AMND
2014-09-23201409240506AMND
2014-09-24201409250539AMND
2014-09-24201409250594AMND
2014-09-24201409250492AMND
2014-09-24201409250589AMND
2014-09-24201409250629AMND
2014-09-24201409250599AMND
2014-09-24201409250494AMND
2014-09-24201409250601AMND
2014-09-24201409250487AMND
2014-09-24201409250506AMND
2014-09-24201409250623AMND
2014-09-24201409250619AMND
2014-09-24201409250633AMND
2014-09-24201409250587AMND
2014-09-24201409250627AMND
2014-10-23201410240211AMND
2015-03-02201503030745AMND
2015-03-02201503030747AMND
2015-03-02201503030260AMND
2015-03-02201503030313AMND
2015-03-02201503030753AMND
2015-03-02201503030262AMND
2015-03-02201503030421AMND
2015-03-02201503030398AMND
2015-03-03201503040340AMND
2015-03-03201503040347AMND
2015-03-03201503040447AMND
2015-03-03201503040312AMND
2015-03-03201503040756AMND
2015-03-03201503040382AMND
2015-03-03201503040753AMND
2015-03-03201503040772AMND
2015-03-03201503040768AMND
2015-03-03201503040430AMND
2015-03-03201503040468AMND
2015-03-03201503040385AMND
2015-03-04201503050520AMND
2015-03-04201503050466AMND
2015-03-04201503050451AMND
2015-03-04201503050468AMND
2015-03-04201503050555AMND
2015-03-04201503050477AMND
2015-03-04201503050479AMND
2015-03-05201503060133AMND
2015-03-05201503060180AMND
2015-03-05201503060339AMND
2015-03-05201503060186AMND
2015-03-05201503060334AMND
2015-03-05201503060182AMND
2015-03-05201503060315AMND
2015-03-05201503060336AMND
2015-03-09201503100534AMND
2015-03-09201503110233AMND
2015-03-09201503110200AMND
2015-03-09201503100899AMND
2015-03-09201503100583AMND
2015-03-09201503110239AMND
2015-03-09201503100581AMND
2015-03-09201503100585AMND
2015-03-09201503110210AMND
2015-03-09201503100919AMND
2015-03-10201503110880AMND
2015-03-10201503110874AMND
2015-03-10201503120188AMND
2015-03-10201503120191AMND
2015-03-10201503120234AMND
2015-03-10201503110945AMND
2015-03-10201503120240AMND
2015-03-11201503130171AMND
2015-03-11201503130153AMND
2015-03-11201503130173AMND
2015-03-11201503120554AMND
2015-03-11201503130131AMND
2015-03-11201503130148AMND
2015-03-11201503130166AMND
2015-03-11201503130164AMND
2015-03-12201503140176AMND
2015-03-12201503140206AMND
2015-03-12201503140179AMND
2015-03-12201503140204AMND
2015-03-12201503140187AMND
2015-03-12201503140172AMND
2015-03-12201503140189AMND
2015-03-12201503140197AMND
2015-03-16201503170673AMND
2015-03-16201503170735AMND
2015-03-16201503170561AMND
2015-03-16201503170490AMND
2015-03-16201503170715AMND
2015-03-16201503170523AMND
2015-03-16201503170717AMND
2015-03-16201503170675AMND
2015-03-16201503170719AMND
2015-03-17201503180515AMND
2015-03-17201503180484AMND
2015-03-17201503180738AMND
2015-03-17201503180528AMND
2015-03-17201503180548AMND
2015-03-17201503180446AMND
2015-03-17201503180461AMND
2015-03-17201503180830AMND
2015-03-17201503180467AMND
2015-03-17201503180819AMND
2015-03-17201503180736AMND
2015-03-17201503180519AMND
2015-03-18201503190491AMND
2015-03-18201503190562AMND
2015-03-18201503190489AMND
2015-03-18201503190548AMND
2015-03-18201503190524AMND
2015-03-18201503190508AMND
2015-03-24201503250413AMND
2015-03-24201503250532AMND
2015-03-30201503160248AMND
2015-03-30201503160246AMND
2015-03-30201503160249AMND
2015-03-30201503160250AMND