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EWG's Tap Water Database — 2019 UPDATE

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MTBE

Chesterfield County Central Water System

MTBE was used as gasoline oxygenation additive to boost the octane number. In 2005, MTBE was replaced by ethanol as a gasoline additive. MTBE causes cancers in rats.

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND60ND
2014ND100ND
2015ND40ND
2016ND40ND
2017ND40ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 13 ppb

The EWG Health Guideline of 13 ppb for MTBE was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2012-06-05E120400821ND
2012-06-05E120400841ND
2012-06-05E120400837ND
2012-06-05E120400817ND
2013-04-23E130202506ND
2013-04-23E130202509ND
2013-04-23E130202481ND
2013-04-23E130202494ND
2013-05-14E130501441ND
2013-05-14E130501440ND
2014-03-27E140307385ND
2014-04-22E140308605ND
2014-04-22E140308573ND
2014-04-22E140308595ND
2014-04-22E140308606ND
2014-08-22E140801005ND
2014-08-22E140801006ND
2014-08-22E140801007ND
2014-08-22E140801008ND
2014-09-25E140801009ND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2016-04-25E160305675ND
2016-04-25E160305671ND
2016-04-25E160305672ND
2016-04-25E160305682ND
2017-04-19E170304726ND
2017-04-19E170304724ND
2017-04-19E170304741ND
2017-04-20E170304722ND