Know Your Environment. Protect Your Health.

MTBE

Cherry Creek Valley

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.

 

9

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
2019N/A00N/A
20206.28 ppb116.28 ppb
2021N/A00N/A
20221.30 ppb331.000 ppb - 1.77 ppb
20231.33 ppb551.000 ppb - 1.67 ppb

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
2020-03-02S9434966.28 ppb
2022-06-03S11854321.77 ppb
2022-09-22S12308391.14 ppb
2022-12-08S12564661.000 ppb
2023-03-20S12771961.32 ppb
2023-04-10S12829191.65 ppb
2023-07-12S12879161.67 ppb
2023-09-21S12880061.01 ppb
2023-10-06S13131931.000 ppb