Know Your Environment. Protect Your Health.

MTBE

San Juan Vista

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019N/A00N/A
2020ND30ND
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
2018-05-23CA3901215_001_001-201805231202ND
2020-02-10CA3901215_001_001-202002101422ND
2020-05-18CA3901215_001_001-202005181050ND
2020-08-12CA3901215_001_001-202008121113ND
2021-08-04CA3901215_001_001-202108041053ND
2021-11-05CA3901215_001_001-202111051535ND
2022-02-09CA3901215_001_001-202202091149ND
2022-08-08CA3901215_001_001-202208081215ND
2023-08-17CA3901215_001_001-202308171040ND
2023-11-08CA3901215_001_001-202311081325ND