Know Your Environment. Protect Your Health.

MTBE

Butano Canyon Mutual

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.

 

8

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
2021ND20ND
2022ND10ND
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
2018-01-10CA4100503_001_001-201801101110ND
2019-01-03CA4100503_001_001-201901031115ND
2020-01-09CA4100503_001_001-202001091210ND
2021-01-07CA4100503_001_001-202101071154ND
2021-10-20CA4100503_001_001-202110200845ND
2022-12-14CA4100503_001_001-202212140930ND
2023-05-03CA4100503_001_001-202305030750ND
2023-12-18CA4100503_001_001-202312181100ND