Know Your Environment. Protect Your Health.

MTBE

Shorelands Road & Water Company

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
2018ND30ND
2019N/A00N/A
2020ND20ND
2021ND30ND
2022N/A00N/A
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
2018-08-20CA2300545_001_001-201808200830ND
2018-08-20CA2300545_007_007-201808200830ND
2018-08-20CA2300545_010_010-201808200830ND
2020-09-21CA2300545_006_006-202009210830ND
2020-09-21CA2300545_004_004-202009210830ND
2021-09-08CA2300545_001_001-202109080910ND
2021-09-08CA2300545_007_007-202109080920ND
2021-09-08CA2300545_010_010-202109080925ND
2023-09-12CA2300545_004_004-202309121021ND
2023-09-12CA2300545_006_006-202309121059ND