Know Your Environment. Protect Your Health.

MTBE

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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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND20ND
2020ND20ND
2021ND10ND
2022ND10ND
2023ND20ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-01-23AJ76957ND
2018-04-09AJ87016ND
2018-07-18AJ94739ND
2018-10-24AK04777ND
2019-01-22AK09816ND
2019-04-22AK15567ND
2020-02-19AK41841ND
2020-02-19AK41842ND
2021-02-15AK69954ND
2022-03-03AK96368ND
2023-05-11AL31582ND
2023-10-11AL46949ND