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EWG's Tap Water Database — 2021 UPDATE

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11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)

San Jose Water Company

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) is a member of a group of perfluorinated chemicals used in many consumer products. 11Cl-PF3OUdS and other 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

 

65

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019ND650ND

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 11Cl-PF3OUdS was defined by EWG as 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 protects against applies to the entire class of PFAS detected in water.

ppt = parts per trillion

All test results

Date Lab ID Result
2019-05-169590-116-1050ND
2019-05-169590-113-1105ND
2019-06-109590-027-0935ND
2019-06-119590-024-0815ND
2019-06-119590-126-0930ND
2019-06-119590-029-0830ND
2019-06-139590-178-1113ND
2019-06-139590-178-1103ND
2019-06-139590-131-1045ND
2019-06-149590-186-1016ND
2019-06-149590-133-1008ND
2019-06-149590-134-1025ND
2019-06-149590-183-0945ND
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
2019-08-069590-117-0935ND
2019-08-069590-112-0843ND
2019-09-109590-016-1045ND
2019-09-109590-179-1040ND
2019-09-109590-178-1026ND
2019-09-109590-173-1120ND
2019-09-129590-118-0953ND
2019-09-139590-125-0858ND
2019-09-139590-135-0937ND
2019-09-179590-176-0955ND
2019-09-179590-110-1017ND
2019-09-209590-125-0945ND
2019-09-209590-183-2227ND
2019-09-209590-088-0950ND
2019-09-209590-101-0855ND
2019-09-209590-177-2055ND
2019-09-242920-174-0910ND
2019-09-242920-114-0840ND
2019-09-242920-172-0850ND
2019-10-025810-178-0944ND
2019-10-025810-113-0945ND
2019-10-025810-179-0952ND
2019-10-025810-114-0954ND
2019-10-025810-172-1005ND
2019-10-025810-111-1035ND
2019-10-035810-174-0910ND
2019-10-035810-118-1010ND
2019-10-035810-117-0940ND
2019-10-105810-112-0955ND
2019-10-255810-173-1010ND
2019-10-255810-016-0928ND
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