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EWG's Tap Water Database — 2021 UPDATE

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MTBE

West Brookfield 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.

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.67 ppb72ND - 7.30 ppb
20151.28 ppb62ND - 4.00 ppb
20160.433 ppb62ND - 1.30 ppb
20170.405 ppb62ND - 1.23 ppb
20180.300 ppb62ND - 1.000 ppb
20190.317 ppb61ND - 1.90 ppb

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
2014-05-147.30 ppb
2014-05-144.40 ppb
2014-07-09ND
2014-07-09ND
2014-07-09ND
2014-07-09ND
2014-11-12ND
2015-01-14ND
2015-04-08ND
2015-04-08ND
2015-04-08ND
2015-04-083.70 ppb
2015-04-084.00 ppb
2016-04-131.30 ppb
2016-04-13ND
2016-04-13ND
2016-04-131.30 ppb
2016-04-13ND
2016-04-13ND
2017-04-121.23 ppb
2017-04-12ND
2017-04-12ND
2017-04-12ND
2017-04-12ND
2017-04-121.20 ppb
2018-04-111.000 ppb
2018-04-11ND
2018-04-110.800 ppb
2018-04-11ND
2018-04-11ND
2018-04-11ND
2019-04-101.90 ppb
2019-04-10ND
2019-04-10ND
2019-04-10ND
2019-04-10ND
2019-04-10ND