Know Your Environment. Protect Your Health.

MTBE

Rio Brazos Water Supply Corporation

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.

 

14

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
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
2018-09-24Q1838018007ND
2018-09-24Q1838018008ND
2019-09-23Q1967408003ND
2019-09-23Q1967408008ND
2020-08-03Q2030183001ND
2020-08-03Q2030183003ND
2021-03-31Q2108168006ND
2021-03-31Q2108168008ND
2022-11-30Q2235879002ND
2022-11-30Q2235879004ND
2023-06-08Q2321728001ND
2023-06-08Q2321728011ND
2023-08-17Q2334702001ND
2023-12-15Q2354044001ND