Know Your Environment. Protect Your Health.

MTBE

Big Lake

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.

 

8

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
2020ND30ND
2021ND20ND
2022ND10ND
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
2020-07-0820G0347-01ND
2020-10-1920J0959-01ND
2020-10-1920J0959-02ND
2021-01-2521A0728-01ND
2021-04-0721D0381-01ND
2022-01-1822A0632-01ND
2023-02-0223B0220-01ND
2023-05-0123E0134-02ND