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EWG's Tap Water Database — 2019 UPDATE

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Perfluorobutane sulfonate (PFBS)

Charlotte Water

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND50ND
2014ND150ND
2015N/A00N/A
2016N/A00N/A
2017N/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
2013-10-3035114055005AMND
2013-10-3035114055009AMND
2013-10-3035114055003AMND
2013-10-3035114055007AMND
2013-10-3035114055001AMND
2014-01-3035124487001AMND
2014-01-3035124487013AMND
2014-01-3035124487003AMND
2014-01-3035124487011AMND
2014-01-3035124487007AMND
2014-04-2935136065001AMND
2014-04-2935136065003AMND
2014-04-2935136065007AMND
2014-04-2935136065011AMND
2014-04-2935136065005AMND
2014-07-3035148391005AMND
2014-07-3035148391007AMND
2014-07-3035148391009AMND
2014-07-3035148391002AMND
2014-07-3035148391001AMND