Know Your Environment. Protect Your Health.

MTBE

Genoa

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.

 

11

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
2020ND40ND
2021ND30ND
2022ND30ND
2023ND10ND

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
2020-01-160013218-01ND
2020-01-160013218-03ND
2020-01-160013218-04ND
2020-02-130022593-01ND
2021-04-15ED03164-01ND
2021-07-13EG03220-01ND
2021-10-13EJ02899-01ND
2022-01-13FA02505-01ND
2022-05-11FE02755-01ND
2022-08-02FH01349-01ND
2023-02-07GB01903-01ND