Know Your Environment. Protect Your Health.

MTBE

N Walpole Village District/low

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND90ND
2019ND30ND
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
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
2018-01-09118010501.01ND
2018-03-06118030514.01ND
2018-04-11118041218.01ND
2018-05-08118051007.01ND
2018-07-10118070915.01ND
2018-07-10118070915.02ND
2018-09-05118090432.01ND
2018-11-05118110574.01ND
2018-11-06118110570.01ND
2019-03-04119030357.01ND
2019-03-05119030358.01ND
2019-04-02119040308.01ND