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EWG's Tap Water Database — 2019 UPDATE

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Monochlorobenzene (chlorobenzene)

Naval Station, Newport

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

Monochlorobenzene is used as a solvent for pesticides, a degreasing agent and an intermediate for manufacturing other chemicals. It causes liver and kidney damage in studies of laboratory animals.

 

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 70 ppb

The EWG Health Guideline of 70 ppb for monochlorobenzene 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 harm to internal organs.

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for monochlorobenzene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1960s.

ppb = parts per billion

All test results

NOTE: Naval Station, Newport purchases water from City of Newport which is required to test for monochlorobenzene (chlorobenzene). 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