Know Your Environment. Protect Your Health.

MTBE

Riverwalk 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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND30ND
2021ND30ND
2022ND30ND
2023ND30ND

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
2018-01-22AE09589ND
2018-01-22AE09591ND
2018-01-22AE09581ND
2019-11-25AE90392ND
2019-11-25AE90394ND
2019-11-25AE90408ND
2020-09-03AF26500ND
2020-09-03AF26502ND
2020-09-03AF26506ND
2021-07-26AF63303ND
2021-07-26AF63347ND
2021-07-26AF63345ND
2022-08-24AG10787ND
2022-08-24AG10791ND
2022-08-24AG10799ND
2023-08-03AG51336ND
2023-08-03AG51354ND
2023-08-03AG51356ND