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EWG's Tap Water Database — 2021 UPDATE

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MTBE

Sudbury Water District

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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105

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND200ND
2015ND160ND
2016ND130ND
2017ND170ND
2018ND200ND
2019ND190ND

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
2014-01-07ND
2014-01-07ND
2014-01-07ND
2014-01-07ND
2014-05-06ND
2014-05-06ND
2014-05-06ND
2014-05-06ND
2014-07-08ND
2014-07-08ND
2014-07-08ND
2014-07-08ND
2014-07-08ND
2014-07-08ND
2014-07-23ND
2014-07-23ND
2014-10-21ND
2014-10-21ND
2014-10-21ND
2014-10-21ND
2015-01-06ND
2015-01-06ND
2015-01-06ND
2015-01-06ND
2015-04-16ND
2015-04-22ND
2015-04-22ND
2015-04-22ND
2015-04-22ND
2015-07-07ND
2015-07-07ND
2015-07-07ND
2015-07-07ND
2015-07-07ND
2015-07-07ND
2015-10-06ND
2016-01-05ND
2016-03-15ND
2016-03-15ND
2016-04-06ND
2016-04-06ND
2016-07-12ND
2016-07-12ND
2016-07-12ND
2016-07-12ND
2016-07-12ND
2016-07-12ND
2016-10-04ND
2016-10-04ND
2017-01-10ND
2017-01-10ND
2017-01-10ND
2017-01-10ND
2017-04-04ND
2017-04-04ND
2017-04-04ND
2017-07-11ND
2017-07-11ND
2017-07-11ND
2017-07-11ND
2017-07-11ND
2017-07-11ND
2017-10-03ND
2017-10-03ND
2017-10-03ND
2017-10-03ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-04-10ND
2018-04-10ND
2018-04-10ND
2018-04-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-10-10ND
2018-10-10ND
2018-10-10ND
2018-10-10ND
2019-01-08ND
2019-01-08ND
2019-01-08ND
2019-04-02ND
2019-04-02ND
2019-04-02ND
2019-07-02ND
2019-07-02ND
2019-07-02ND
2019-07-02ND
2019-07-02ND
2019-07-02ND
2019-07-02ND
2019-07-02ND
2019-07-16ND
2019-10-08ND
2019-10-08ND
2019-10-08ND
2019-10-08ND