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EWG's Tap Water Database — 2021 UPDATE

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MTBE

Shrewsbury 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.

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57

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND110ND
2015ND100ND
2016ND110ND
2017ND20ND
2018ND110ND
2019ND120ND

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 Result
2014-02-24ND
2014-05-06ND
2014-09-03ND
2014-09-03ND
2014-09-03ND
2014-09-03ND
2014-09-03ND
2014-09-03ND
2014-09-03ND
2014-09-03ND
2014-11-06ND
2015-02-11ND
2015-05-13ND
2015-09-02ND
2015-09-02ND
2015-09-02ND
2015-09-02ND
2015-09-02ND
2015-09-02ND
2015-09-02ND
2015-11-30ND
2016-02-19ND
2016-04-14ND
2016-07-13ND
2016-07-13ND
2016-07-13ND
2016-07-13ND
2016-07-13ND
2016-07-13ND
2016-07-13ND
2016-07-13ND
2016-10-25ND
2017-02-28ND
2017-12-15ND
2018-03-06ND
2018-07-26ND
2018-07-26ND
2018-07-26ND
2018-07-26ND
2018-07-26ND
2018-07-26ND
2018-07-26ND
2018-07-26ND
2018-08-21ND
2018-12-05ND
2019-03-25ND
2019-05-16ND
2019-08-14ND
2019-08-14ND
2019-08-14ND
2019-08-14ND
2019-08-14ND
2019-08-14ND
2019-08-14ND
2019-08-14ND
2019-08-14ND
2019-10-16ND