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EWG's Tap Water Database — 2021 UPDATE

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Monochlorobenzene (chlorobenzene)

City of Highland Village

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.

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND50ND
2016ND80ND
2017ND50ND
2018ND50ND
2019ND50ND

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
2014-08-18Q1437308024ND
2014-08-18Q1437308022ND
2014-08-18Q1437308020ND
2014-08-18Q1437308019ND
2014-08-18Q1437308010ND
2015-06-09Q1521357009ND
2015-06-09Q1521357008ND
2015-08-13Q1532069009ND
2015-08-13Q1532069005ND
2015-08-13Q1532069006ND
2016-03-16Q1611305003ND
2016-06-07Q1622614016ND
2016-06-07Q1622614004ND
2016-06-07Q1622614001ND
2016-06-27Q1625972004ND
2016-06-27Q1625972002ND
2016-09-02Q1635674005ND
2016-10-19Q1644917003ND
2017-06-15Q1725217002ND
2017-06-15Q1725217024ND
2017-06-15Q1725217022ND
2017-06-15Q1725217021ND
2017-10-12Q1752251006ND
2018-06-13Q1823500010ND
2018-06-13Q1823500007ND
2018-06-13Q1823500005ND
2018-06-13Q1823500003ND
2018-06-13Q1823500001ND
2019-08-08Q1953062020ND
2019-08-08Q1953062028ND
2019-08-08Q1953062026ND
2019-08-08Q1953062024ND
2019-08-08Q1953062022ND