Know Your Environment. Protect Your Health.

MTBE

West Harris County Municipal Utility District 15

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
2018-03-05AE16632ND
2018-03-05AE16636ND
2019-01-28AE51688ND
2019-04-23AE63390ND
2020-01-13AE93133ND
2020-11-05AF33470ND
2021-03-09AF46042ND
2021-04-27AF51428ND
2022-03-01AF86930ND
2022-03-01AF86950ND
2023-02-22AG29960ND
2023-02-22AG29962ND