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EWG's Tap Water Database — 2021 UPDATE

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Perfluoroheptanoic acid (PFHPA)

City of Mesa

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.

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61

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND570ND
2014ND30ND
2015ND10ND
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
2013-01-15201301160548AMND
2013-01-15201301160554AMND
2013-01-16201301160564AMND
2013-01-16201301160562AMND
2013-01-16201301160566AMND
2013-01-22201301240172AMND
2013-01-22201301240152AMND
2013-02-12201302140542AMND
2013-02-12201302140546AMND
2013-02-12201302140544AMND
2013-02-13201302140531AMND
2013-02-13201302140533AMND
2013-02-13201302140535AMND
2013-02-13201302140529AMND
2013-04-09201304100479AMND
2013-04-09201304100481AMND
2013-04-09201304100477AMND
2013-04-10201304110546AMND
2013-04-10201304110544AMND
2013-04-10201304110542AMND
2013-04-10201304110540AMND
2013-04-17201304170695AMND
2013-05-09201305100038AMND
2013-05-09201305100044AMND
2013-05-09201305100040AMND
2013-05-09201305100042AMND
2013-05-09201305100046AMND
2013-05-20201305200068AMND
2013-05-20201305200127AMND
2013-07-16201307170506AMND
2013-07-16201307170510AMND
2013-07-16201307170504AMND
2013-07-16201307170508AMND
2013-07-17201307170520AMND
2013-07-17201307170516AMND
2013-07-17201307170518AMND
2013-07-23201307240531AMND
2013-07-24201307240544AMND
2013-08-06201308070586AMND
2013-08-06201308070584AMND
2013-08-06201308070588AMND
2013-08-07201308070590AMND
2013-08-14201308140392AMND
2013-08-14201308140394AMND
2013-10-08201310080614AMND
2013-10-08201310080610AMND
2013-10-08201310080612AMND
2013-10-08201310080616AMND
2013-10-09201310090511AMND
2013-10-09201310090513AMND
2013-10-15201310150503AMND
2013-11-05201311050401AMND
2013-11-05201311050403AMND
2013-11-06201311070298AMND
2013-11-06201311070294AMND
2013-11-06201311070300AMND
2013-11-06201311070296AMND
2014-03-25201403250419AMND
2014-06-04201406040576AMND
2014-09-02201409020217AMND
2015-01-21201501220204AMND