Know Your Environment. Protect Your Health.

MTBE

Guatay Mutual Benefit Corporation

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
2019ND10ND
2020ND50ND
2021N/A00N/A
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
2019-12-16CA3700897_001_001-201912161622ND
2020-09-24CA3700897_004_004-202009241244ND
2020-09-24CA3700897_005_005-202009241220ND
2020-12-15CA3700897_004_004-202012150809ND
2020-12-15CA3700897_005_005-202012150849ND
2020-12-15CA3700897_001_001-202012150736ND
2023-12-29CA3700897_001_001-202312291730ND
2023-12-29CA3700897_004_004-202312291700ND