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EWG's Tap Water Database — 2019 UPDATE

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Perfluoroheptanoic acid (PFHPA)

City of Corona

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND100ND
20141.70 ppt203ND - 13.0 ppt
2015N/A00N/A
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
2013-10-09201310100242AMND
2013-10-09201310100234AMND
2013-10-09201310100238AMND
2013-10-09201310100240AMND
2013-10-09201310100236AMND
2013-10-23201310240246AMND
2013-10-23201310240252AMND
2013-10-23201310240240AMND
2013-10-23201310240242AMND
2013-10-23201310240244AMND
2014-01-15201401150769AMND
2014-01-15201401150771AMND
2014-01-15201401150773AMND
2014-01-16201401170062AM10.00 ppt
2014-01-16201401170060AM11.0 ppt
2014-04-09201404090853AMND
2014-04-09201404090855AMND
2014-04-09201404090851AMND
2014-04-09201404090857AMND
2014-04-09201404090849AMND
2014-04-17201404180150AMND
2014-04-17201404180148AMND
2014-04-22201404220789AMND
2014-04-24201404240693AMND
2014-04-24201404240697AMND
2014-07-10201407100762AMND
2014-07-10201407100758AM13.0 ppt
2014-07-10201407100756AMND
2014-07-10201407100760AMND
2014-07-15201407150791AMND