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EWG's Tap Water Database — 2021 UPDATE

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Perfluoroheptanoic acid (PFHPA)

San Jose State University

NOTE: San Jose State University purchases water from San Jose Water Company which is required to test for perfluoroheptanoic acid (pfhpa). Sample information shown below was taken by San Jose Water Company.

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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154

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND20ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019ND1110ND

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

NOTE: San Jose State University purchases water from San Jose Water Company which is required to test for perfluoroheptanoic acid (pfhpa). Sample information shown below was taken by San Jose Water Company.

Date Lab ID Result
2013-08-052872075ND
2013-08-052871982ND
2013-08-052872015ND
2013-08-052871998ND
2013-08-052872049ND
2013-08-122877910ND
2013-08-192883568ND
2013-08-192883558ND
2013-08-192882281ND
2013-08-192882210ND
2013-08-192882257ND
2013-08-262886325ND
2013-08-262886357ND
2013-08-262886346ND
2013-08-262887318ND
2013-08-262887284ND
2013-08-272886936ND
2013-11-062927605ND
2013-11-062927651ND
2013-11-062927627ND
2013-11-062927616ND
2014-02-052970787ND
2014-02-072970706ND
2014-02-072970766ND
2014-02-072970742ND
2014-02-072970722ND
2014-02-072970666ND
2014-02-072970689ND
2014-02-102973542ND
2014-02-102973361ND
2014-02-102973551ND
2014-02-102973461ND
2014-02-102973506ND
2014-02-102973519ND
2014-02-102973486ND
2014-02-102973311ND
2014-02-142978684ND
2014-03-182994500ND
2014-05-053020651ND
2014-05-053020636ND
2014-05-093025980ND
2014-06-023037129ND
2015-02-113189327ND
2019-03-149590-090-0850ND
2019-03-149590-094-0951ND
2019-03-149590-177-1135ND
2019-03-149590-181-1020ND
2019-03-149590-187-1345ND
2019-03-209590-024-1217ND
2019-03-259590-030-0944ND
2019-03-259590-033-1030ND
2019-03-269590-136-1331ND
2019-03-269590-183-1046ND
2019-03-279590-093-1433ND
2019-04-089590-075-1050ND
2019-04-089590-084-1000ND
2019-04-129590-016-1107ND
2019-04-129590-173-1152ND
2019-04-129590-177-1305ND
2019-04-159590-022-0830ND
2019-04-159590-023-0820ND
2019-04-159590-025-0849ND
2019-04-159590-128-0842ND
2019-04-159590-129-0848ND
2019-04-159590-130-0919ND
2019-04-189590-086-0955ND
2019-04-189590-111-0916ND
2019-04-189590-156-0925ND
2019-04-189590-172-0952ND
2019-04-199590-102-0730ND
2019-04-199590-180-0752ND
2019-04-229590-002-0830ND
2019-04-229590-003-0925ND
2019-04-229590-168-0855ND
2019-04-259590-170-0904ND
2019-04-269590-034-0945ND
2019-04-269590-070-0826ND
2019-04-269590-169-0835ND
2019-04-309590-202-1240ND
2019-05-019590-114-0910ND
2019-05-029590-107-1050ND
2019-05-029590-108-1030ND
2019-05-029590-109-1020ND
2019-05-029590-175-1125ND
2019-05-029590-185-1000ND
2019-05-069590-199-1015ND
2019-05-139590-201-0930ND
2019-05-159590-141-0830ND
2019-05-159590-143-0845ND
2019-05-169590-113-1105ND
2019-05-169590-116-1050ND
2019-06-109590-027-0935ND
2019-06-119590-024-0815ND
2019-06-119590-029-0830ND
2019-06-119590-126-0930ND
2019-06-139590-131-1045ND
2019-06-139590-178-1103ND
2019-06-139590-178-1113ND
2019-06-149590-133-1008ND
2019-06-149590-134-1025ND
2019-06-149590-183-0945ND
2019-06-149590-186-1016ND
2019-06-179590-174-0850ND
2019-06-189590-112-0930ND
2019-06-189590-117-1025ND
2019-06-199590-142-0855ND
2019-06-199590-144-0930ND
2019-06-269590-138-0830ND
2019-07-229590-116-0930ND
2019-07-239590-199-0945ND
2019-07-249590-111-0620ND
2019-07-249590-113-0613ND
2019-07-259590-116-1000ND
2019-08-069590-112-0843ND
2019-08-069590-117-0935ND
2019-09-109590-016-1045ND
2019-09-109590-173-1120ND
2019-09-109590-178-1026ND
2019-09-109590-179-1040ND
2019-09-129590-118-0953ND
2019-09-139590-125-0858ND
2019-09-139590-135-0937ND
2019-09-179590-110-1017ND
2019-09-179590-176-0955ND
2019-09-209590-088-0950ND
2019-09-209590-101-0855ND
2019-09-209590-125-0945ND
2019-09-209590-177-2055ND
2019-09-209590-183-2227ND
2019-09-242920-114-0840ND
2019-09-242920-172-0850ND
2019-09-242920-174-0910ND
2019-10-025810-111-1035ND
2019-10-025810-113-0945ND
2019-10-025810-114-0954ND
2019-10-025810-172-1005ND
2019-10-025810-178-0944ND
2019-10-025810-179-0952ND
2019-10-035810-117-0940ND
2019-10-035810-118-1010ND
2019-10-035810-174-0910ND
2019-10-105810-112-0955ND
2019-10-255810-016-0928ND
2019-10-255810-173-1010ND
2019-10-255810-177-1050ND
2019-11-065810-183-1501ND
2019-11-155810-125-0946ND
2019-11-155810-137-0835ND
2019-11-155810-138-0910ND
2019-11-205810-024-0825ND
2019-11-215810-135-1115ND
2019-11-225810-141-1111ND
2019-12-115810-101-0900ND
2019-12-125810-142-1000ND