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EWG's Tap Water Database — 2021 UPDATE

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Monochlorobenzene (chlorobenzene)

Lawrenceville

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.

 

16

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
2014ND50ND
2015ND60ND
2016ND10ND
2017ND10ND
2018ND20ND
2019ND10ND

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
2014-01-17AI26847ND
2014-01-17AI26848ND
2014-04-22AI38491ND
2014-07-16AI45986ND
2014-10-23AI58241ND
2015-02-06AI64377ND
2015-02-06AI64378ND
2015-04-24AI75613ND
2015-07-21AI83589ND
2015-07-21AI83590ND
2015-10-28AI99887ND
2016-03-18AJ08390ND
2017-05-26AJ56186ND
2018-03-28AJ86590ND
2018-03-28AJ86591ND
2019-05-10AK17050ND