Know Your Environment. Protect Your Health.

MTBE

Galveston County Water Control and Improvement District 8

NOTE: Galveston County Water Control and Improvement District 8 purchases water from Gulf Coast Water Authority Tx City which is required to test for mtbe. Sample information shown below was taken by Gulf Coast Water Authority Tx City.

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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

NOTE: Galveston County Water Control and Improvement District 8 purchases water from Gulf Coast Water Authority Tx City which is required to test for mtbe. Sample information shown below was taken by Gulf Coast Water Authority Tx City.

Date Lab ID Result
2018-07-11AE32989ND
2019-07-29AE76192ND
2020-07-15AF19499ND
2021-07-16AF62454ND
2022-07-22AG06107ND
2023-07-13AG48515ND