Know Your Environment. Protect Your Health.

MTBE

Connecticut Correctional Institute

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
2018ND10ND
2019ND40ND
2020ND10ND
2021ND10ND
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
2018-01-16308608GEND
2019-01-22CC32920ND
2019-01-29CC35679ND
2019-01-29CC35682ND
2019-12-10330471GEND
2020-02-25CF37530ND
2021-01-14CH46414ND
2022-02-08CK31864ND
2022-02-08CK31868ND
2022-09-13CM29463ND
2023-09-19CP02568ND