Know Your Environment. Protect Your Health.

MTBE

Crowley II Acre Subdivision

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
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
2019-05-29Q1930464002ND
2019-05-29Q1930464004ND
2020-10-26Q2041544001ND
2020-10-26Q2041544003ND
2021-12-13Q2134978003ND
2021-12-13Q2134978005ND
2022-11-30Q2235596002ND
2022-11-30Q2235596004ND
2023-03-13Q2309636002ND
2023-03-13Q2309636007ND