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EWG's Tap Water Database — 2021 UPDATE

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MTBE

Hesperia 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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72

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
2014N/A00N/A
2015N/A00N/A
2016ND100ND
2017ND150ND
2018ND160ND
2019ND310ND

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
2016-07-123761-038-0930ND
2016-07-123761-019-0730ND
2016-07-123761-021-0800ND
2016-07-123761-010-1030ND
2016-07-193761-018-0900ND
2016-07-193761-005-0800ND
2016-07-263761-014-0805ND
2016-07-273761-013-0845ND
2016-07-283761-022-0820ND
2016-08-163761-015-0930ND
2017-07-103761-018-1000ND
2017-07-103761-014-0830ND
2017-07-103761-019-0800ND
2017-07-103761-013-0930ND
2017-07-103761-010-1100ND
2017-07-103761-002-1030ND
2017-07-103761-036-0900ND
2017-07-133761-038-0900ND
2017-07-143761-033-0800ND
2017-07-143761-039-0830ND
2017-07-183761-009-0830ND
2017-07-183761-013-0730ND
2017-07-203761-005-0945ND
2017-07-313761-022-0800ND
2017-08-213761-015-0935ND
2018-07-023761-039-0650ND
2018-07-023761-014-0630ND
2018-07-023761-038-0720ND
2018-07-033761-018-0600ND
2018-07-033761-013-0630ND
2018-07-033761-013-0700ND
2018-07-033761-012-0700ND
2018-07-113761-036-0635ND
2018-07-113761-021-0600ND
2018-07-173761-015-0700ND
2018-07-243761-005-0600ND
2018-07-243761-009-0630ND
2018-07-253761-033-0740ND
2018-07-253761-002-0845ND
2018-07-273761-022-0730ND
2018-07-313761-019-0810ND
2019-06-053761-018-1330ND
2019-06-053761-002-0830ND
2019-06-053761-005-0930ND
2019-06-053761-039-1030ND
2019-06-053761-012-1200ND
2019-06-053761-013-1130ND
2019-06-053761-038-1100ND
2019-06-053761-014-1000ND
2019-06-063761-010-1325ND
2019-06-103761-033-1400ND
2019-06-113761-036-0720ND
2019-06-183761-009-0850ND
2019-06-183761-015-0910ND
2019-06-203761-019-1015ND
2019-06-203761-022-0915ND
2019-07-083761-038-0700ND
2019-07-083761-039-0630ND
2019-07-083761-019-0600ND
2019-07-083761-018-0730ND
2019-07-083761-013-0800ND
2019-07-083761-012-0830ND
2019-07-083761-010-0900ND
2019-07-103761-015-1030ND
2019-07-153761-036-0840ND
2019-07-153761-014-0815ND
2019-07-223761-005-0730ND
2019-07-233761-021-0645ND
2019-07-253761-002-0800ND
2019-07-293761-009-0830ND
2019-07-303761-022-0835ND
2019-08-013761-033-0830ND