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EWG's Tap Water Database — 2019 UPDATE

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MTBE

890 Boston Turnpike

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
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
2015ND30ND
2016ND20ND
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
2015-06-26BJ37424VOC1ND
2015-11-10BK21302VOC1ND
2015-12-15BK39260VOC1ND
2016-01-26BK57435VOC1ND
2016-04-19BN15788VOC1ND
2017-01-11BX20168VOC1ND
2017-03-09BX83047VOC1ND
2017-04-21BY07899VOC1ND
2017-08-24BY90765VOC1ND
2017-10-06BZ17327VOC1ND