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EWG's Tap Water Database — 2021 UPDATE

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Monochlorobenzene (chlorobenzene)

Sauk

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.

 

70

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND150ND
2015ND180ND
2016ND100ND
2017ND80ND
2018ND80ND
2019ND110ND

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
2014-01-211401933-001AND
2014-02-041402096-001AND
2014-03-041403083-001AND
2014-04-081404406-001AND
2014-05-061405199-001AND
2014-06-031406180-001AND
2014-07-081407377-001AND
2014-08-121408619-001AND
2014-09-161409817-001AND
2014-10-011410012-003AND
2014-10-071410299-001AND
2014-11-041411116-001AND
2014-11-181411A41-003AND
2014-12-081412473-001AND
2014-12-161412917-001AND
2015-01-051501129-001AND
2015-01-051501129-007AND
2015-02-241502E77-001AND
2015-02-241502E77-009AND
2015-03-031503110-001AND
2015-03-031503110-009AND
2015-04-211504G11-001AND
2015-04-281504L38-001AND
2015-05-191505E43-001AND
2015-05-191505E43-009AND
2015-06-151506E33-001AND
2015-06-161506E33-005AND
2015-07-071507335-001AND
2015-07-071507335-007AND
2015-08-041508154-001AND
2015-08-041508154-003AND
2015-10-201510G11-001AND
2015-10-201510G11-003AND
2016-01-191601969-001AND
2016-01-191601969-003AND
2016-04-191604C89-001AND
2016-04-191604C89-003AND
2016-06-211606I19-005AND
2016-06-211606I19-001AND
2016-07-051607093-001AND
2016-07-051607093-003AND
2016-11-011611035-001AND
2016-11-011611035-003AND
2017-01-171701866-001AND
2017-01-171701866-003AND
2017-04-181704B51-003AND
2017-04-181704B51-001AND
2017-07-251707J12-001AND
2017-07-251707J12-003AND
2017-11-071711461-001AND
2017-11-071711461-003AND
2018-01-091801388-003AND
2018-01-091801388-001AND
2018-04-241804G60-003AND
2018-04-241804G60-001AND
2018-08-211808H61-001AND
2018-08-211808H61-003AND
2018-11-061811337-001AND
2018-11-061811337-003AND
2019-01-221901C94-001AND
2019-01-221901C94-003AND
2019-04-161904D38-001AND
2019-04-161904D38-003AND
2019-07-091907542-001AND
2019-07-091907542-003AND
2019-07-091907542-005AND
2019-07-231907I42-003AND
2019-07-231907I42-001AND
2019-11-051911193-003AND
2019-11-051911193-001AND