Know Your Environment. Protect Your Health.

MTBE

Ranch Hand Apartments

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND60ND
2021ND30ND
2022ND30ND
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 Lab ID Result
2018-08-22Q1833679007ND
2018-08-22Q1833679004ND
2019-02-21Q1907708004ND
2019-02-21Q1907708007ND
2020-02-13Q2005887008ND
2020-02-13Q2005887010ND
2020-02-13Q2005887012ND
2020-05-21Q2020391003ND
2020-08-17Q2032718003ND
2020-12-14Q2049491004ND
2021-08-18Q2122319001ND
2021-08-18Q2122319003ND
2021-08-18Q2122319005ND
2022-06-08Q2216110005ND
2022-06-08Q2216110007ND
2022-06-08Q2216110009ND
2023-03-02Q2308578003ND
2023-03-02Q2308578005ND
2023-03-02Q2308578010ND