Know Your Environment. Protect Your Health.

MTBE

Northwest Harris County Municipal Utility District 19

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
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
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
2018-05-17AE26819ND
2018-05-17AE26823ND
2019-11-07AE88931ND
2019-11-07AE88937ND
2020-10-01AF29290ND
2020-10-01AF29300ND
2021-06-10AF57515ND
2021-06-10AF57537ND
2022-05-17AF97248ND
2022-05-17AF97250ND
2023-07-20AG49615ND
2023-07-20AG49637ND