Know Your Environment. Protect Your Health.

MTBE

Paddock Estates

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND10ND
2020ND40ND
2021ND30ND
2022ND20ND
2023ND30ND

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 Result
2018-03-05ND
2018-05-14ND
2019-05-20ND
2020-03-26ND
2020-05-14ND
2020-05-14ND
2020-05-14ND
2021-01-08ND
2021-01-08ND
2021-09-17ND
2022-06-17ND
2022-07-19ND
2023-04-12ND
2023-04-12ND
2023-04-12ND