Know Your Environment. Protect Your Health.

MTBE

East Montgomery County MUD 4

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022ND80ND
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
2022-03-08AF88066ND
2022-03-08AF88068ND
2022-04-13AF93154ND
2022-04-13AF93156ND
2022-07-11AG04066ND
2022-07-11AG04068ND
2022-10-18AG17488ND
2022-10-18AG17492ND
2023-05-10AG40023ND
2023-05-10AG40033ND