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EWG's Tap Water Database — 2019 UPDATE

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Perfluoroheptanoic acid (PFHPA)

California Water Service Company - Dominguez

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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND220ND
2015ND50ND
2016N/A00N/A
2017N/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
2014-04-02201404030203AMND
2014-04-02201404030214AMND
2014-04-09201404100038AMND
2014-04-09201404100048AMND
2014-04-09201404100020AMND
2014-04-16201404170195AMND
2014-04-16201404161005AMND
2014-04-16201404161021AMND
2014-04-16201404161014AMND
2014-07-09201407100246AMND
2014-07-16201407160939AMND
2014-07-16201407160950AMND
2014-07-17201407170899AMND
2014-07-17201407170890AMND
2014-10-01201410010681AMND
2014-10-01201410010695AMND
2014-10-15201410160143AMND
2014-10-15201410160152AMND
2014-10-15201410160128AMND
2014-10-22201410220556AMND
2014-10-22201410220542AMND
2014-10-31201410310236AMND
2015-01-07201501070701AMND
2015-01-07201501080024AMND
2015-01-08201501080800AMND
2015-01-14201501141019AMND
2015-01-14201501141132AMND