Know Your Environment. Protect Your Health.

MTBE

San Bernard River Estates

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
2021ND30ND
2022ND20ND
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
2018-08-14AE36957ND
2018-08-14AE36961ND
2019-04-17AE62768ND
2019-08-26AE80689ND
2020-09-16AF27599ND
2020-12-10AF37309ND
2021-05-12AF53572ND
2021-05-12AF53578ND
2021-09-29AF71680ND
2022-09-20AG14196ND
2022-09-20AG14198ND
2023-06-14AG44507ND