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EWG's Tap Water Database

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MTBE

Boone County PWSD 9

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011N/A00N/A
2012ND40ND
2013N/A00N/A
2014N/A00N/A
2015ND50ND

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
2012-02-07AB66761ND
2012-02-07AB66759ND
2012-02-08AB66758ND
2012-02-08AB66760ND
2015-02-18AC42745ND
2015-02-18AC42741ND
2015-02-18AC42743ND
2015-02-18AC42742ND
2015-02-18AC42744ND