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EWG's Tap Water Database — 2021 UPDATE

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MTBE

University of Connecticut - Main Campus

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND30ND
2016ND20ND
2017ND20ND
2018ND20ND
2019ND20ND

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
2014-04-24BG36616VOC1ND
2014-04-24BG36617VOC1ND
2014-06-27BG66061VOC1ND
2015-01-22BH66098VOC1ND
2015-01-22BH66096VOC1ND
2015-01-22BH66097VOC1ND
2016-06-14BN54228VOC1ND
2016-06-14BN54227VOC1ND
2017-12-11BZ54499VOC1ND
2017-12-11BZ54498VOC1ND
2018-12-12VOC1 200515892ND
2018-12-12VOC1 200515895ND
2019-11-21VOC1 200557816ND
2019-11-21VOC1 200557817ND