Know Your Environment. Protect Your Health.

MTBE

Desert Water Supply Corporation

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
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
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
2018-04-19Q1816226010ND
2018-04-19Q1816226014ND
2019-05-14Q1924857002ND
2019-05-14Q1924857004ND
2020-06-30Q2025933001ND
2020-06-30Q2025933003ND
2021-09-21Q2125878005ND
2021-09-21Q2125878015ND
2022-05-10Q2213913001ND
2022-05-10Q2213913004ND
2023-09-19Q2340246001ND
2023-09-19Q2340246003ND