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EWG's Tap Water Database — 2021 UPDATE

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Perfluoroheptanoic acid (PFHPA)

Desert Water Agency

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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53

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND200ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019ND330ND

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
2014-03-17201403190414AMND
2014-03-17201403190404AMND
2014-03-17201403190406AMND
2014-03-17201403190412AMND
2014-03-17201403190410AMND
2014-03-17201403190408AMND
2014-03-17201403190389AMND
2014-03-17201403190391AMND
2014-06-16201406180478AMND
2014-06-16201406180476AMND
2014-09-15201409170348AMND
2014-09-15201409170340AMND
2014-09-15201409170338AMND
2014-09-16201409170336AMND
2014-09-16201409170328AMND
2014-09-16201409170332AMND
2014-09-16201409170334AMND
2014-09-16201409170330AMND
2014-12-16201412170213AMND
2014-12-16201412170215AMND
2019-05-214790-031-0915ND
2019-05-214790-040-1252ND
2019-05-214790-045-1005ND
2019-05-214790-046-0945ND
2019-05-214790-025-1030ND
2019-05-214790-047-1132ND
2019-05-214790-034-1100ND
2019-06-194790-028-1145ND
2019-06-194790-026-1300ND
2019-06-194790-033-1430ND
2019-07-184790-028-1320ND
2019-08-294790-017-0910ND
2019-08-294790-015-0830ND
2019-08-294790-031-0905ND
2019-08-294790-026-1100ND
2019-08-294790-047-0740ND
2019-08-294790-046-0850ND
2019-08-294790-045-0940ND
2019-08-294790-034-1030ND
2019-09-124790-040-0730ND
2019-11-214790-015-1015ND
2019-11-214790-047-1035ND
2019-11-214790-046-0905ND
2019-11-214790-040-1100ND
2019-11-214790-034-0845ND
2019-11-214790-033-0815ND
2019-11-214790-031-0730ND
2019-11-214790-028-0955ND
2019-11-214790-026-0755ND
2019-11-214790-025-0745ND
2019-11-214790-017-1220ND
2019-12-264790-045-0910ND
2019-12-264790-020-1100ND