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EWG's Tap Water Database — 2021 UPDATE

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Monochlorobenzene (chlorobenzene)

Rolla

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.

MORE ABOUT THIS CONTAMINANT

 

36

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
2015ND180ND
2016N/A00N/A
2017N/A00N/A
2018ND180ND
2019N/A00N/A

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
2015-01-22AC41408ND
2015-01-22AC41411ND
2015-01-22AC41413ND
2015-01-22AC41403ND
2015-01-22AC41405ND
2015-01-22AC41409ND
2015-01-22AC41400ND
2015-01-22AC41404ND
2015-01-22AC41397ND
2015-01-22AC41402ND
2015-01-22AC41399ND
2015-01-22AC41398ND
2015-01-22AC41412ND
2015-01-22AC41414ND
2015-01-22AC41406ND
2015-01-22AC41407ND
2015-01-22AC41410ND
2015-01-22AC41401ND
2018-01-24AD12007ND
2018-01-24AD12008ND
2018-01-24AD12009ND
2018-01-24AD12010ND
2018-01-24AD12011ND
2018-01-24AD12012ND
2018-01-24AD12014ND
2018-01-24AD12015ND
2018-01-24AD12016ND
2018-01-24AD12006ND
2018-01-24AD12005ND
2018-01-24AD12003ND
2018-01-24AD12002ND
2018-01-24AD12001ND
2018-01-24AD12004ND
2018-01-24AD12000ND
2018-01-24AD11998ND
2018-01-24AD11999ND