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EWG's Tap Water Database — 2019 UPDATE

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MTBE

San Fernando Water Department

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND30ND
2014ND30ND
2015ND60ND
2016ND30ND
2017ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2012-01-189590-004-0920ND
2012-01-189590-003-1000ND
2012-01-189590-002-1035ND
2012-09-109590-004-0910ND
2013-01-099590-004-0830ND
2013-01-099590-003-0915ND
2013-01-099590-002-0940ND
2014-01-229590-004-0840ND
2014-01-229590-003-0950ND
2014-01-229590-002-0905ND
2015-01-219590-002-0820ND
2015-01-219590-003-1015ND
2015-01-219590-004-0905ND
2015-04-089590-002-1000ND
2015-04-089590-004-0845ND
2015-04-089590-003-1130ND
2016-02-179590-004-0900ND
2016-02-179590-002-0920ND
2016-04-139590-004-0820ND
2017-01-259590-004-0800ND
2017-01-259590-003-0855ND
2017-01-259590-002-0715ND
2017-04-059590-004-0920ND
2017-10-249590-004-0715ND