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EWG's Tap Water Database — 2021 UPDATE

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Monochlorobenzene (chlorobenzene)

Cal/am Water Company - Baldwin Hills

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

 

67

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
2014ND170ND
2015ND160ND
2016ND150ND
2017ND70ND
2018ND20ND
2019ND100ND

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
2014-01-081225-001-1000ND
2014-02-031225-001-1100ND
2014-03-121225-001-1200ND
2014-04-071225-001-1145ND
2014-05-121225-001-1240ND
2014-06-021225-001-1200ND
2014-06-231225-006-0900ND
2014-06-231225-003-1000ND
2014-06-231225-001-0930ND
2014-07-219590-003-1030ND
2014-07-219590-001-1100ND
2014-07-259590-001-0954ND
2014-08-041225-001-1230ND
2014-09-151225-001-1015ND
2014-10-061225-001-0950ND
2014-11-171225-001-1200ND
2014-12-081225-001-1200ND
2015-01-051225-001-1030ND
2015-02-021225-001-1130ND
2015-03-091225-001-1130ND
2015-04-081225-001-1045ND
2015-05-041225-001-1020ND
2015-06-031225-001-1245ND
2015-07-131225-001-0930ND
2015-08-121225-001-1320ND
2015-09-021225-001-1330ND
2015-09-021225-006-1245ND
2015-09-021225-003-1200ND
2015-09-281225-001-1200ND
2015-10-121225-001-1130ND
2015-11-091225-001-0700ND
2015-11-169590-008-1250ND
2015-12-071225-001-1200ND
2016-01-111225-001-1205ND
2016-02-101225-001-1200ND
2016-03-141225-001-1200ND
2016-04-061225-001-0955ND
2016-05-021225-001-1200ND
2016-06-061225-001-1130ND
2016-06-131225-003-0930ND
2016-06-131225-006-1000ND
2016-06-131225-001-1030ND
2016-07-181225-001-1000ND
2016-08-011225-001-1200ND
2016-09-061225-001-1000ND
2016-10-101225-001-0915ND
2016-11-071225-001-1100ND
2016-12-121225-001-1040ND
2017-01-091225-001-1120ND
2017-02-071225-001-1000ND
2017-03-011225-001-1015ND
2017-04-031225-001-1130ND
2017-05-081225-001-0930ND
2017-06-261225-006-1230ND
2017-06-261225-003-1130ND
2018-06-051225-006-1000ND
2018-06-051225-003-1040ND
2019-06-121225-006-1404ND
2019-09-269590-001-1030ND
2019-09-269590-001-1045ND
2019-09-269590-001-1100ND
2019-09-269590-001-1115ND
2019-09-269590-001-1130ND
2019-10-019590-008-1027ND
2019-10-019590-008-1012ND
2019-10-019590-008-0957ND
2019-10-019590-008-0942ND