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EWG's Tap Water Database — 2019 UPDATE

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MTBE

Naval Station, Newport

NOTE: Naval Station, Newport purchases water from City of Newport which is required to test for mtbe. Sample information shown below was taken by City of Newport.

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.

 

51

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND130ND
2013ND80ND
2014ND80ND
2015ND80ND
2016ND20ND
2017ND100ND

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

NOTE: Naval Station, Newport purchases water from City of Newport which is required to test for mtbe. Sample information shown below was taken by City of Newport.

Date Lab ID Result
2012-01-091200051-01_TO12ND
2012-01-091200054-01_TO12ND
2012-05-071201005-03_TO12ND
2012-05-071201005-02_TO12ND
2012-07-091201873-03_TO12ND
2012-07-091201873-01_TO12ND
2012-07-091201873-02_TO12ND
2012-07-091201873-04_TO12ND
2012-09-271209-20231-001_TND
2013-01-141300133-06_TO12ND
2013-01-141300133-07_TO12ND
2013-04-091300962-02_TO12ND
2013-04-091300962-01_TO12ND
2013-07-221302371-04_TO12ND
2013-07-221302371-02_TO12ND
2013-07-221302371-03_TO12ND
2013-07-221302371-05_TO12ND
2014-01-061401012-08_TO12ND
2014-01-061401012-03_TO12ND
2014-05-211402793-06_TO12ND
2014-05-211402793-05_TO12ND
2014-07-021403537-01_TO12ND
2014-07-021403537-05_TO12ND
2014-07-021403537-04_TO12ND
2014-07-021403537-03_TO12ND
2015-01-121501069-08_TO12ND
2015-01-121501069-03_TO12ND
2015-06-011502384-02_TO12ND
2015-06-011502384-01_TO12ND
2015-07-201503232-03_TO12ND
2015-07-201503232-05_TO12ND
2015-07-201503232-06_TO12ND
2015-07-201503232-04_TO12ND
2016-01-111600887-08_TO12ND
2016-01-111600887-02_TO12ND
2016-05-091602070-04_TO12ND
2016-05-091602070-05_TO12ND
2016-07-251603626-01_TO12ND
2016-07-251603626-03_TO12ND
2016-07-251603626-04_TO12ND
2016-07-251603626-02_TO12ND
2017-01-241701020-02_TO12ND
2017-01-251701027-06_TO12ND
2017-05-151702185-02_TO12ND
2017-05-151702185-01_TO12ND
2017-07-101703108-04_TO12ND
2017-07-101703108-01_TO12ND
2017-07-101703108-02_TO12ND
2017-07-101703108-03_TO12ND
2017-10-171710399-02_TO12ND
2017-10-171710399-01_TO12ND