Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

MTBE

City of Hollister

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND60ND
2015N/A00N/A
2016N/A00N/A
2017ND50ND

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
2014-06-121610-009-1055ND
2014-06-121610-007-1250ND
2014-06-121610-006-1315ND
2014-06-121610-005-1015ND
2014-06-121610-002-1145ND
2014-06-121610-001-1205ND
2017-06-011610-002-1045ND
2017-06-011610-001-1011ND
2017-06-081610-007-0916ND
2017-06-081610-006-1236ND
2017-06-081610-005-1150ND