Know Your Environment. Protect Your Health.

MTBE

Quint-mar Water Authority

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.

 

14

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
2019ND60ND
2020ND10ND
2021N/A00N/A
2022ND70ND
2023N/A00N/A

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
2019-02-05AB32814ND
2019-02-05AB32815ND
2019-02-05AB32816ND
2019-02-05AB32817ND
2019-02-05AB32818ND
2019-04-17AB34289ND
2020-07-20AB43480ND
2022-07-20AB60412ND
2022-07-20AB60413ND
2022-07-20AB60414ND
2022-07-20AB60415ND
2022-07-20AB60416ND
2022-07-20AB60417ND
2022-07-20AB60418ND