Know Your Environment. Protect Your Health.

MTBE

Ostrander

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
2018N/A00N/A
2019ND40ND
2020ND20ND
2021ND30ND
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
2019-03-0619C0291-02ND
2019-06-0419F0219-01ND
2019-08-2819H2523-01ND
2019-10-2419J1453-01ND
2020-06-3020G0010-01ND
2020-10-2820J1696-01ND
2021-02-0321B0364-01ND
2021-04-2721D1863-01ND
2021-10-2521J1333-02ND
2022-03-0722C0358-01ND
2022-05-0422E0327-01ND
2023-05-2323E2594-01ND
2023-11-2823K1283-01ND