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EWG's Tap Water Database — 2021 UPDATE

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Perfluorobutane sulfonate (PFBS)

Cliffdale West

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

 

53

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND530ND
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
2014-03-10201403110485AMND
2014-03-10201403110248AMND
2014-03-10201403110492AMND
2014-03-10201403110323AMND
2014-03-11201403120601AMND
2014-03-11201403120770AMND
2014-03-11201403121138AMND
2014-03-11201403120774AMND
2014-03-12201403130416AMND
2014-03-12201403130414AMND
2014-03-12201403130412AMND
2014-03-13201403130209AMND
2014-03-13201403140275AMND
2014-03-13201403140170AMND
2014-03-13201403140164AMND
2014-03-17201403180203AMND
2014-03-17201403180201AMND
2014-03-17201403180227AMND
2014-03-18201403190705AMND
2014-03-18201403190659AMND
2014-03-19201403200581AMND
2014-03-31201404010147AMND
2014-04-08201404090599AMND
2014-04-08201404090604AMND
2014-04-08201404090616AMND
2014-04-08201404090755AMND
2014-09-09201409100887AMND
2014-09-09201409100871AMND
2014-09-09201409100869AMND
2014-09-09201409110315AMND
2014-09-09201409100791AMND
2014-09-09201409100817AMND
2014-09-09201409110337AMND
2014-09-09201409101002AMND
2014-09-10201409110653AMND
2014-09-10201409110661AMND
2014-09-10201409110838AMND
2014-09-10201409110590AMND
2014-09-10201409110637AMND
2014-09-10201409110794AMND
2014-09-10201409110899AMND
2014-09-11201409120829AMND
2014-09-11201409120590AMND
2014-09-11201409120582AMND
2014-09-15201409180321AMND
2014-09-16201409170728AMND
2014-09-17201409190284AMND
2014-09-17201409180633AMND
2014-09-17201409190242AMND
2014-09-17201409190313AMND
2014-09-18201409190466AMND
2014-09-18201409190445AMND
2014-09-18201409190458AMND