Know Your Environment. Protect Your Health.

MTBE

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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
2018N/A00N/A
2019ND20ND
2020ND10ND
2021ND40ND
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
2019-10-09AK34777ND
2019-10-09AK34778ND
2020-10-20AK62894ND
2021-01-19AK67826ND
2021-04-12AK72840ND
2021-07-28AK81518ND
2021-10-19AK89313ND
2022-02-02AK94577ND
2022-04-19AK99304ND
2022-09-07AL13094ND
2023-02-23AL26109ND