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EWG's Tap Water Database

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MTBE

City of Flint

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND10ND
2011ND10ND
2012ND10ND
2013ND20ND
2014ND30ND
2015N/A00N/A

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 13 ppb

The 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
2010-11-05LLD59541ND
2011-12-02LLE11088ND
2012-05-03LLE26411ND
2013-01-18LLE61821ND
2013-07-18LLE83917ND
2014-05-22LLF19430ND
2014-08-06LLF31222ND
2014-10-28LLF44687ND