Know Your Environment. Protect Your Health.

MTBE

Miller Grove Water Supply 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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND30ND
2021ND20ND
2022ND20ND
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
2018-04-12Q1815139002ND
2018-04-12Q1815139009ND
2019-05-13Q1923868005ND
2019-05-13Q1923868007ND
2020-05-26Q2020632001ND
2020-05-26Q2020632009ND
2020-07-21Q2028843003ND
2021-11-03Q2130890001ND
2021-11-03Q2130890003ND
2022-02-16Q2205791003ND
2022-02-16Q2205791005ND
2023-07-18Q2327997006ND
2023-07-18Q2327997008ND