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EWG's Tap Water Database — 2019 UPDATE

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Monochlorobenzene (chlorobenzene)

Washington Aqueduct Division

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.

 

142

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND240ND
2013ND240ND
2014ND240ND
2015ND240ND
2016ND240ND
2017ND220ND

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

Date Lab ID Result
2012-01-01DalecarliaND
2012-01-01McMillanND
2012-02-01DalecarliaND
2012-02-01McMillanND
2012-03-01DalecarliaND
2012-03-01McMillanND
2012-04-01DalecarliaND
2012-04-01McMillanND
2012-05-01DalecarliaND
2012-05-01McMillanND
2012-06-01DalecarliaND
2012-06-01McMillanND
2012-07-01DalecarliaND
2012-07-01McMillanND
2012-08-01DalecarliaND
2012-08-01McMillanND
2012-09-01DalecarliaND
2012-09-01McMillanND
2012-10-01DalecarliaND
2012-10-01McMillanND
2012-11-01DalecarliaND
2012-11-01McMillanND
2012-12-01DalecarliaND
2012-12-01McMillanND
2013-01-01DalecarliaND
2013-01-01McMillanND
2013-02-01DalecarliaND
2013-02-01McMillanND
2013-03-01DalecarliaND
2013-03-01McMillanND
2013-04-01DalecarliaND
2013-04-01McMillanND
2013-05-01DalecarliaND
2013-05-01McMillanND
2013-06-01DalecarliaND
2013-06-01McMillanND
2013-07-01DalecarliaND
2013-07-01McMillanND
2013-08-01DalecarliaND
2013-08-01McMillanND
2013-09-01DalecarliaND
2013-09-01McMillanND
2013-10-01DalecarliaND
2013-10-01McMillanND
2013-11-01DalecarliaND
2013-11-01McMillanND
2013-12-01DalecarliaND
2013-12-01McMillanND
2014-01-01DalecarliaND
2014-01-01McMillanND
2014-02-01DalecarliaND
2014-02-01McMillanND
2014-03-01DalecarliaND
2014-03-01McMillanND
2014-04-01DalecarliaND
2014-04-01McMillanND
2014-05-01DalecarliaND
2014-05-01McMillanND
2014-06-01DalecarliaND
2014-06-01McMillanND
2014-07-01DalecarliaND
2014-07-01McMillanND
2014-08-01DalecarliaND
2014-08-01McMillanND
2014-09-01DalecarliaND
2014-09-01McMillanND
2014-10-01DalecarliaND
2014-10-01McMillanND
2014-11-01DalecarliaND
2014-11-01McMillanND
2014-12-01DalecarliaND
2014-12-01McMillanND
2015-01-01DalecarliaND
2015-01-01McMillanND
2015-02-01DalecarliaND
2015-02-01McMillanND
2015-03-01DalecarliaND
2015-03-01McMillanND
2015-04-01DalecarliaND
2015-04-01McMillanND
2015-05-01DalecarliaND
2015-05-01McMillanND
2015-06-01DalecarliaND
2015-06-01McMillanND
2015-07-01DalecarliaND
2015-07-01McMillanND
2015-08-01DalecarliaND
2015-08-01McMillanND
2015-09-01DalecarliaND
2015-09-01McMillanND
2015-10-01DalecarliaND
2015-10-01McMillanND
2015-11-01DalecarliaND
2015-11-01McMillanND
2015-12-01DalecarliaND
2015-12-01McMillanND
2016-01-01DalecarliaND
2016-01-01McMillanND
2016-02-01DalecarliaND
2016-02-01McMillanND
2016-03-01DalecarliaND
2016-03-01McMillanND
2016-04-01DalecarliaND
2016-04-01McMillanND
2016-05-01DalecarliaND
2016-05-01McMillanND
2016-06-01DalecarliaND
2016-06-01McMillanND
2016-07-01DalecarliaND
2016-07-01McMillanND
2016-08-01DalecarliaND
2016-08-01McMillanND
2016-09-01DalecarliaND
2016-09-01McMillanND
2016-10-01DalecarliaND
2016-10-01McMillanND
2016-11-01DalecarliaND
2016-11-01McMillanND
2016-12-01DalecarliaND
2016-12-01McMillanND
2017-01-01DalecarliaND
2017-01-01McMillanND
2017-02-01DalecarliaND
2017-02-01McMillanND
2017-03-01DalecarliaND
2017-03-01McMillanND
2017-04-01DalecarliaND
2017-04-01McMillanND
2017-05-01DalecarliaND
2017-05-01McMillanND
2017-06-01DalecarliaND
2017-06-01McMillanND
2017-07-01DalecarliaND
2017-07-01McMillanND
2017-08-01DalecarliaND
2017-08-01McMillanND
2017-09-01DalecarliaND
2017-09-01McMillanND
2017-10-01DalecarliaND
2017-10-01McMillanND
2017-11-01DalecarliaND
2017-12-01DalecarliaND