Know Your Environment. Protect Your Health.

MTBE

Hart Municipal Water System

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND10ND
2021ND10ND
2022ND20ND
2023ND40ND

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
2018-08-02Q1830741002ND
2019-05-30Q1930307002ND
2020-02-27Q2007416001ND
2021-07-15Q2118660004ND
2022-07-14Q2220308003ND
2022-10-12Q2230982001ND
2023-01-19Q2302869001ND
2023-04-05Q2312662001ND
2023-08-08Q2332884001ND
2023-10-05Q2342814001ND