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EWG's Tap Water Database — 2021 UPDATE

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Monochlorobenzene (chlorobenzene)

Audubon Water Company

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

 

138

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND220ND
2015ND240ND
2016ND240ND
2017ND230ND
2018ND230ND
2019ND220ND

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
2014-01-131066988001ND
2014-01-131066988002ND
2014-01-131066988003ND
2014-02-271073775001ND
2014-04-021079479001ND
2014-04-021079479002ND
2014-04-021079479004ND
2014-04-021079479003ND
2014-04-232003262001ND
2014-04-232003262002ND
2014-08-282026276001ND
2014-08-282026276002ND
2014-08-282026276003ND
2014-09-092028135001ND
2014-09-092028135002ND
2014-09-092028135003ND
2014-10-062032858001ND
2014-10-062032858002ND
2014-10-062032858003ND
2014-10-062032858004ND
2014-11-062038813001ND
2014-11-062038814001ND
2015-03-1012517664ND
2015-03-1012517727ND
2015-03-1012517706ND
2015-03-1012517685ND
2015-03-1812517748ND
2015-03-1812517769ND
2015-03-1812517790ND
2015-03-2612635360ND
2015-06-0112751823ND
2015-06-0112751844ND
2015-06-0112751865ND
2015-06-0112751886ND
2015-06-0512884468ND
2015-09-1713266491ND
2015-09-1713266512ND
2015-09-1713266533ND
2015-09-1713266554ND
2015-09-2413266575ND
2015-10-1913391309ND
2015-11-1913515889ND
2015-11-1913515910ND
2015-11-1913515931ND
2015-11-1913515952ND
2015-11-1913515973ND
2016-02-0513872260ND
2016-02-0513872281ND
2016-02-0513872302ND
2016-02-0513872323ND
2016-03-1713988305ND
2016-04-0413988336ND
2016-04-0413988357ND
2016-04-0413988378ND
2016-04-0413988399ND
2016-04-1314105387ND
2016-04-1314105408ND
2016-04-2214572530ND
2016-04-2514572551ND
2016-09-1614910409ND
2016-09-1614910430ND
2016-09-1614910451ND
2016-09-1614910472ND
2016-09-2914910791ND
2016-10-0515078204ND
2016-10-0515078225ND
2016-10-0515078246ND
2016-10-0515078267ND
2016-10-0515078288ND
2016-12-0815374247ND
2017-01-1715519923ND
2017-02-1015657967ND
2017-02-1015657988ND
2017-02-1015658009ND
2017-02-1015658030ND
2017-02-1015658051ND
2017-02-2315658072ND
2017-05-0515940540ND
2017-05-0515940561ND
2017-05-0515940582ND
2017-05-0515940603ND
2017-09-1916729564ND
2017-09-1916729585ND
2017-09-1916729606ND
2017-09-1916729627ND
2017-09-2016729648ND
2017-09-2516729669ND
2017-10-0216729789ND
2017-10-0216729810ND
2017-10-0216729831ND
2017-10-0216729852ND
2017-10-0516882744ND
2017-10-1716882907ND
2018-03-022299268001ND
2018-03-022299268002ND
2018-03-022299268003ND
2018-03-022299268004ND
2018-03-282305330001ND
2018-04-012306020001ND
2018-04-022306020002ND
2018-04-022306020003ND
2018-04-022306020004ND
2018-04-022306020005ND
2018-09-172338753001ND
2018-09-172338753002ND
2018-09-172338753003ND
2018-09-172338753004ND
2018-09-172338753005ND
2018-09-182339343001ND
2018-09-202339702001ND
2018-09-212340025001ND
2018-10-012341512001ND
2018-10-012341512002ND
2018-10-012341512003ND
2018-10-012341512004ND
2018-10-242346425001ND
2019-03-223023817002ND
2019-03-223023817001ND
2019-03-223023817005ND
2019-03-223023817003ND
2019-03-223023817006ND
2019-03-223023817004ND
2019-04-103027288001ND
2019-04-103027288003ND
2019-04-103027288005ND
2019-04-103027288007ND
2019-04-243029820001ND
2019-07-253047779001ND
2019-07-253047779003ND
2019-07-253047779005ND
2019-07-253047779007ND
2019-08-053049543001ND
2019-10-163064410005ND
2019-10-163064409001ND
2019-10-163064410001ND
2019-10-163064410003ND
2019-10-163064410007ND
2019-10-223065363001ND