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EWG's Tap Water Database — 2021 UPDATE

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Perfluoroheptanoic acid (PFHPA)

Jericho Water District

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

 

62

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND220ND
2015ND240ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
20190.421 ppt162ND - 4.05 ppt

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
2014-04-2235135322009AMND
2014-04-2235135322007AMND
2014-04-2235135322003AMND
2014-04-2235135322005AMND
2014-04-2235135322001AMND
2014-04-2235135322011AMND
2014-04-2435135550001AMND
2014-04-2835136029001AMND
2014-04-2835136029003AMND
2014-04-2935136171003AMND
2014-04-2935136171001AMND
2014-09-1635155602005AMND
2014-09-1635155602003AMND
2014-09-1635155602007AMND
2014-09-1635155602001AMND
2014-09-1735155888005AMND
2014-09-1735155888003AMND
2014-09-1735155888001AMND
2014-09-1835156153001AMND
2014-09-1935156149001AMND
2014-09-2335156450001AMND
2014-09-2635157315001AMND
2015-04-1335184110007AMND
2015-04-1335184110003AMND
2015-04-1335184110001AMND
2015-04-1335184110005AMND
2015-04-1435184417003AMND
2015-04-1435184417005AMND
2015-04-1435184417001AMND
2015-04-1435184417007AMND
2015-04-1535184676007AMND
2015-04-1535184676005AMND
2015-04-1535184676003AMND
2015-04-1635184676001AMND
2015-09-2235208979003AMND
2015-09-2235208979001AMND
2015-10-0635211293019AMND
2015-10-0635211293017AMND
2015-10-0635211293013AMND
2015-10-0635211293011AMND
2015-10-0635211293015AMND
2015-10-0635211293003AMND
2015-10-0635211293005AMND
2015-10-0635211293001AMND
2015-10-0635211293009AMND
2015-10-0635211293007AMND
2019-05-28200-48945-8ND
2019-05-28200-48945-2ND
2019-05-28200-48945-6ND
2019-05-28200-48944-3ND
2019-05-28200-48944-2ND
2019-05-28200-48645-1ND
2019-05-28200-48944-1ND
2019-05-28200-48945-4ND
2019-05-28200-48944-4ND
2019-05-28200-48945-3ND
2019-05-29200-48955-4ND
2019-05-29200-48955-3ND
2019-05-29200-48955-2ND
2019-06-177093933001ND
2019-06-24200-49362-12.68 ppt
2019-09-03200-50390-14.05 ppt