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EWG's Tap Water Database — 2019 UPDATE

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MTBE

City of Georgetown

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
2012ND30ND
2013ND30ND
2014ND30ND
2015ND30ND
2016ND40ND
2017ND30ND

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
2012-07-12AB95153ND
2012-07-12AB95151ND
2012-07-12AB95155ND
2013-08-29Q1306583003ND
2013-08-29Q1306583001ND
2013-09-25Q1308517001ND
2014-09-25AC68260ND
2014-09-25AC68264ND
2014-09-25AC68258ND
2015-09-15AD07139ND
2015-09-15AD07147ND
2015-09-15AD07149ND
2016-04-21AD33769ND
2016-09-09AD48628ND
2016-09-09AD48634ND
2016-09-09AD48630ND
2017-07-06AD88506ND
2017-07-06AD88508ND
2017-07-06AD88510ND