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EWG's Tap Water Database — 2021 UPDATE

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Perfluorobutane sulfonate (PFBS)

Los Angeles Department of Water and Power

Perfluorobutane sulfonate (PFBS) is a member of a group of perfluorinated chemicals used in many consumer products. PFOS 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

 

38

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND290ND
2014ND90ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/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 perfluorobutane sulfonate 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
2013-04-09201304090337AMND
2013-04-10201304100511AMND
2013-04-10201304100513AMND
2013-04-10201304100515AMND
2013-04-10201304100509AMND
2013-04-11201304110670AMND
2013-04-11201304110666AMND
2013-04-11201304110676AMND
2013-04-11201304110674AMND
2013-04-11201304110668AMND
2013-04-11201304110672AMND
2013-07-24201307240670AMND
2013-07-24201307240674AMND
2013-07-24201307240676AMND
2013-07-24201307240672AMND
2013-07-25201307260124AMND
2013-07-25201307260122AMND
2013-07-25201307260120AMND
2013-07-25201307260118AMND
2013-10-29201310290652AMND
2013-10-29201310290650AMND
2013-10-29201310290648AMND
2013-10-29201310290646AMND
2013-10-30201310300486AMND
2013-10-30201310300482AMND
2013-10-30201310300488AMND
2013-10-30201310300484AMND
2013-10-31201310310343AMND
2013-10-31201310310345AMND
2014-03-18201403190489AMND
2014-03-18201403190487AMND
2014-03-18201403190491AMND
2014-03-19201403190859AMND
2014-03-19201403190861AMND
2014-03-19201403190863AMND
2014-03-20201403210157AMND
2014-03-20201403210153AMND
2014-03-20201403210155AMND