Know Your Environment. Protect Your Health.

MTBE

Seville Water Company

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
2019N/A00N/A
2020ND20ND
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
2018-01-26CA5400550_003_003-201801261330ND
2020-08-19CA5400550_003_003-202008191250ND
2020-08-19CA5400550_001_001-202008191245ND
2021-07-14CA5400550_003_003-202107141310ND
2021-08-23CA5400550_003_003-202108231505ND
2022-08-09CA5400550_003_003-202208091410ND
2023-08-14CA5400550_003_003-202308141020ND
2023-08-14CA5400550_001_001-202308141010ND