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EWG's Tap Water Database — 2021 UPDATE

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MTBE

Natick 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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133

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
2014ND220ND
2015ND220ND
2016ND220ND
2017ND230ND
2018ND230ND
2019ND210ND

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
2014-01-14ND
2014-01-14ND
2014-01-14ND
2014-02-04ND
2014-03-04ND
2014-04-01ND
2014-05-06ND
2014-05-06ND
2014-05-13ND
2014-06-03ND
2014-07-01ND
2014-08-05ND
2014-08-06ND
2014-08-06ND
2014-09-02ND
2014-09-03ND
2014-10-14ND
2014-10-14ND
2014-10-14ND
2014-10-14ND
2014-11-04ND
2014-12-02ND
2015-01-13ND
2015-01-13ND
2015-01-13ND
2015-02-03ND
2015-03-03ND
2015-04-07ND
2015-04-22ND
2015-04-22ND
2015-04-22ND
2015-05-05ND
2015-06-03ND
2015-07-07ND
2015-08-04ND
2015-08-04ND
2015-08-04ND
2015-09-01ND
2015-10-07ND
2015-11-03ND
2015-11-03ND
2015-11-03ND
2015-11-03ND
2015-12-09ND
2016-01-06ND
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-03-01ND
2016-04-13ND
2016-05-03ND
2016-05-03ND
2016-05-03ND
2016-06-08ND
2016-07-06ND
2016-08-02ND
2016-08-02ND
2016-08-02ND
2016-09-07ND
2016-10-04ND
2016-11-01ND
2016-11-01ND
2016-11-01ND
2016-11-01ND
2016-12-06ND
2017-01-10ND
2017-02-08ND
2017-02-08ND
2017-02-08ND
2017-03-07ND
2017-04-05ND
2017-05-03ND
2017-05-03ND
2017-05-03ND
2017-05-03ND
2017-06-07ND
2017-07-05ND
2017-08-01ND
2017-08-09ND
2017-08-09ND
2017-08-09ND
2017-09-05ND
2017-10-03ND
2017-11-08ND
2017-11-08ND
2017-11-08ND
2017-11-08ND
2017-12-05ND
2018-01-03ND
2018-02-08ND
2018-02-08ND
2018-02-08ND
2018-03-12ND
2018-04-03ND
2018-05-01ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-06-05ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-08-07ND
2018-09-04ND
2018-10-02ND
2018-11-06ND
2018-11-06ND
2018-11-06ND
2018-11-06ND
2018-12-04ND
2019-01-02ND
2019-02-05ND
2019-02-05ND
2019-02-05ND
2019-02-19ND
2019-03-12ND
2019-04-02ND
2019-05-07ND
2019-05-07ND
2019-05-15ND
2019-07-02ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-09-03ND
2019-11-05ND
2019-11-05ND
2019-11-05ND
2019-11-05ND
2019-11-12ND
2019-12-10ND