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EWG's Tap Water Database — 2021 UPDATE

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MTBE

City of Bay City

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.

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34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND50ND
2016ND90ND
2017ND50ND
2018ND50ND
2019ND90ND

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
2014-02-19AC43590ND
2015-01-29AC78531ND
2015-01-29AC78515ND
2015-01-29AC78519ND
2015-01-29AC78521ND
2015-01-29AC78511ND
2016-02-25AD25753ND
2016-02-25AD25767ND
2016-02-25AD25759ND
2016-02-25AD25763ND
2016-03-21AD29571ND
2016-06-02AD39201ND
2016-07-21AD45233ND
2016-09-19AD50155ND
2016-11-16AD58355ND
2017-01-25AD66852ND
2017-01-25AD66846ND
2017-03-06AD73481ND
2017-03-06AD73461ND
2017-03-06AD73479ND
2018-01-09AE08373ND
2018-01-09AE08407ND
2018-01-09AE08375ND
2018-01-09AE08379ND
2018-01-09AE08359ND
2019-02-07AE53490ND
2019-02-07AE53492ND
2019-02-07AE53498ND
2019-02-07AE53488ND
2019-02-07AE53496ND
2019-04-29AE63953ND
2019-04-29AE63951ND
2019-08-06AE77279ND
2019-08-06AE77273ND