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EWG's Tap Water Database — 2021 UPDATE

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MTBE

Old Westbury

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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143

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND220ND
2015ND240ND
2016ND250ND
2017ND290ND
2018ND220ND
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 Lab ID Result
2014-01-151401695-001-POCSND
2014-01-161401715-001-POCSND
2014-01-161401772-001-POCSND
2014-01-211401846-001-POCSND
2014-01-231401949-001-POCSND
2014-04-171404D13-002-POCSND
2014-04-171404D13-001-POCSND
2014-04-221404F60-001-POCSND
2014-04-231404G83-002-POCSND
2014-04-231404G83-001-POCSND
2014-08-211408F44-001-POCSND
2014-08-211408F44-002-POCSND
2014-08-281408K28-001-POCSND
2014-08-281408K28-002-POCSND
2014-09-031409141-001-POCSND
2014-09-041409264-001-POCSND
2014-10-201410C41-002-POCSND
2014-10-201410C41-001-POCSND
2014-10-291410191-001-POCSND
2014-10-301410K00-001-POCSND
2014-10-301410K00-002-POCSND
2014-11-041411139-001-POCSND
2015-01-301501H68-001-POCSND
2015-01-301501H68-002-POCSND
2015-02-041502181-002-POCSND
2015-02-041502181-001-POCSND
2015-02-131502878-001-POCSND
2015-02-191502B78-001-POCSND
2015-04-081504521-001-POCSND
2015-04-131504855-001-PCSND
2015-04-161504C42-001-POCSND
2015-04-201504E21-001-POCSND
2015-04-241504I81-001-POCSND
2015-05-041505114-001-POCSND
2015-08-241508H93-001-POCSND
2015-08-271508L21-001-POCSND
2015-09-021509173-001-POCSND
2015-09-081509460-001-POCSND
2015-09-101509737-001-POCSND
2015-09-211509F34-001-POCSND
2015-11-171511D20-001-POCSND
2015-11-171511D20-002-POCSND
2015-11-231511H47-002-POCSND
2015-11-231511H47-001-POCSND
2015-12-011512024-001-POCSND
2015-12-091512786-001-POCSND
2016-01-211601E28-002-POCSND
2016-01-21160E28-001-POCSND
2016-02-101602794-001-POCSND
2016-02-101602794-002-POCSND
2016-02-171602C42-001ND
2016-02-231602F98-001ND
2016-04-191604G89-002-POCSND
2016-04-191604G89-001-POCSND
2016-05-041605290-002-POCSND
2016-05-041605290-001-POCSND
2016-05-161605D84-001-POCSND
2016-06-011606025-001-POCSND
2016-09-121609797-002-POCSND
2016-09-121609797-001-POCSND
2016-09-191609E93-001-POCSND
2016-09-191609E93-002-POCSND
2016-09-231609L04-001-POCSND
2016-10-26702946001ND
2016-10-26702946002ND
2016-10-26702946002-POCSND
2016-10-26702946001-POCSND
2016-11-16704656001-POCSND
2016-11-21705081001-POCSND
2016-11-28705494001-POCSND
2016-12-07706183001-POCSND
2017-02-087010853002-POCSND
2017-02-087010853001-POCSND
2017-02-157011336001-POCSND
2017-02-227011824001-POCSND
2017-03-027012441001-POCSND
2017-03-217013754001-POCSND
2017-05-117018366001ND
2017-05-117018831001ND
2017-06-017019990001ND
2017-06-017020102001ND
2017-06-017019271001ND
2017-06-067020408001ND
2017-06-227022117001ND
2017-06-287022642001ND
2017-07-057023109001ND
2017-07-127023860001ND
2017-08-097026611001ND
2017-09-057028804002ND
2017-09-057028804001ND
2017-09-127029573001ND
2017-09-127029573002ND
2017-09-187030136001-POCSND
2017-09-207030444001-POCSND
2017-10-127032665001-POCSND
2017-11-157035778001ND
2017-11-287036597001-POCSND
2017-12-057037129001ND
2017-12-057037130001ND
2017-12-117037761001ND
2018-01-177040653001ND
2018-01-247041227001ND
2018-02-147042918001ND
2018-03-127045032001ND
2018-03-147045257001ND
2018-03-147045821001ND
2018-05-307053120001ND
2018-05-307053911001ND
2018-05-307053120002ND
2018-06-067053911002ND
2018-06-137054757001ND
2018-06-137054757002ND
2018-09-107064165002ND
2018-09-107064165001ND
2018-09-187065153002ND
2018-09-187065153001ND
2018-09-277066129001ND
2018-11-137070939001ND
2018-11-147071093001ND
2018-12-057072928001ND
2018-12-057073711001ND
2018-12-177074138001ND
2019-02-077078805001ND
2019-02-137079309001ND
2019-02-147080123001ND
2019-02-147079549001ND
2019-03-067081532001ND
2019-03-147082284001ND
2019-06-067092304001ND
2019-06-177093916002ND
2019-06-177093916001ND
2019-07-027095138001ND
2019-08-2870103044002ND
2019-08-2870103044001ND
2019-09-0570103873001ND
2019-09-0570103873002ND
2019-09-1770105242001ND
2019-12-0370113638002ND
2019-12-0370113638001ND
2019-12-0470114012001ND
2019-12-0470114012004ND
2019-12-1670115593001ND
2019-12-1670115504001ND