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EWG's Tap Water Database — 2021 UPDATE

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Monochlorobenzene (chlorobenzene)

Chino Basin Desalter Authority - Desalter 2

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

 

177

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND130ND
2015ND150ND
2016ND270ND
2017ND360ND
2018ND430ND
2019ND430ND

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
2014-04-084790-001-1312ND
2014-04-084790-010-1118ND
2014-07-084790-001-1325ND
2014-07-084790-002-0945ND
2014-07-084790-003-1430ND
2014-07-084790-004-1155ND
2014-07-084790-005-1135ND
2014-07-084790-007-1115ND
2014-07-084790-008-1055ND
2014-07-084790-009-1015ND
2014-07-084790-010-1030ND
2014-10-064790-001-1100ND
2014-10-064790-010-1000ND
2015-01-284790-001-1210ND
2015-01-284790-010-0950ND
2015-04-214790-001-1225ND
2015-04-214790-010-0905ND
2015-08-124790-001-1300ND
2015-08-124790-002-1000ND
2015-08-124790-003-1125ND
2015-08-124790-004-1200ND
2015-08-124790-005-1015ND
2015-08-124790-007-1200ND
2015-08-124790-009-1130ND
2015-08-124790-010-1100ND
2015-08-134790-008-0900ND
2015-08-274790-004-1425ND
2015-08-274790-004-1445ND
2016-01-204790-001-1125ND
2016-01-204790-003-0925ND
2016-01-204790-004-1010ND
2016-01-204790-010-1100ND
2016-04-134790-001-1140ND
2016-04-134790-003-0845ND
2016-04-134790-004-0940ND
2016-04-134790-010-1100ND
2016-04-194790-009-1140ND
2016-08-104790-001-0900ND
2016-08-104790-002-0945ND
2016-08-104790-003-1020ND
2016-08-104790-004-1050ND
2016-08-104790-005-1120ND
2016-08-104790-007-1315ND
2016-08-104790-008-1145ND
2016-08-104790-009-1210ND
2016-08-104790-010-1340ND
2016-10-124790-001-1220ND
2016-10-124790-002-0925ND
2016-10-124790-003-1100ND
2016-10-124790-004-1130ND
2016-10-124790-005-1020ND
2016-10-124790-007-1055ND
2016-10-124790-008-1035ND
2016-10-124790-009-0930ND
2016-10-124790-010-1005ND
2017-01-184790-001-1110ND
2017-01-184790-002-0845ND
2017-01-184790-003-0935ND
2017-01-184790-004-1020ND
2017-01-184790-005-1000ND
2017-01-184790-007-1030ND
2017-01-184790-008-1105ND
2017-01-184790-009-0850ND
2017-01-184790-010-0925ND
2017-04-194790-001-1045ND
2017-04-194790-002-0835ND
2017-04-194790-003-0915ND
2017-04-194790-004-0950ND
2017-04-194790-005-1000ND
2017-04-194790-007-0850ND
2017-04-194790-009-1115ND
2017-04-194790-010-0930ND
2017-04-214790-008-0955ND
2017-08-154790-001-1040ND
2017-08-154790-002-0830ND
2017-08-154790-004-0905ND
2017-08-154790-005-0950ND
2017-08-154790-008-0915ND
2017-08-154790-009-0945ND
2017-08-154790-010-0820ND
2017-08-164790-007-1045ND
2017-08-224790-003-1000ND
2017-10-174790-001-1050ND
2017-10-174790-002-0825ND
2017-10-174790-003-0915ND
2017-10-174790-004-1005ND
2017-10-174790-005-0840ND
2017-10-174790-007-0920ND
2017-10-174790-008-1050ND
2017-10-174790-009-1130ND
2017-10-174790-010-1010ND
2018-01-104790-008-1030ND
2018-01-104790-009-1145ND
2018-01-104790-010-0900ND
2018-01-174790-001-1045ND
2018-01-174790-002-1150ND
2018-01-174790-003-1050ND
2018-01-174790-004-0910ND
2018-01-174790-005-1145ND
2018-01-174790-007-0920ND
2018-03-284790-015-0905ND
2018-03-284790-016-1000ND
2018-04-104790-007-1040ND
2018-04-104790-008-0830ND
2018-04-104790-009-1155ND
2018-04-104790-010-0945ND
2018-04-114790-001-1030ND
2018-04-114790-002-0845ND
2018-04-114790-003-1030ND
2018-04-114790-004-1130ND
2018-04-114790-005-0845ND
2018-06-224790-015-1030ND
2018-06-224790-016-0850ND
2018-07-104790-001-1045ND
2018-07-104790-002-0805ND
2018-07-104790-003-0900ND
2018-07-104790-004-0945ND
2018-07-104790-005-0820ND
2018-07-104790-007-0930ND
2018-07-104790-008-0850ND
2018-07-104790-010-1015ND
2018-07-194790-016-1145ND
2018-08-144790-009-0835ND
2018-10-104790-001-1100ND
2018-10-104790-002-0805ND
2018-10-104790-003-0850ND
2018-10-104790-004-0930ND
2018-10-104790-005-1015ND
2018-10-104790-007-1045ND
2018-10-104790-008-1020ND
2018-10-104790-009-0945ND
2018-10-104790-010-0915ND
2018-10-104790-016-1125ND
2018-12-124790-015-1055ND
2019-02-124790-001-1030ND
2019-02-124790-002-0915ND
2019-02-124790-003-0830ND
2019-02-124790-004-1055ND
2019-02-124790-005-1155ND
2019-02-124790-015-0950ND
2019-02-124790-016-0850ND
2019-02-154790-007-0815ND
2019-02-154790-008-1000ND
2019-02-154790-009-0725ND
2019-02-154790-010-0900ND
2019-06-194790-001-1020ND
2019-06-194790-004-1100ND
2019-06-194790-005-1200ND
2019-06-194790-007-0935ND
2019-06-194790-008-0815ND
2019-06-194790-009-0845ND
2019-06-194790-015-1000ND
2019-06-194790-016-0840ND
2019-06-204790-003-0915ND
2019-06-204790-010-1030ND
2019-08-074790-004-1205ND
2019-08-074790-005-1045ND
2019-08-074790-008-1120ND
2019-08-074790-009-1150ND
2019-08-084790-001-1255ND
2019-08-084790-015-1200ND
2019-08-084790-016-1105ND
2019-08-154790-003-1130ND
2019-08-154790-007-0900ND
2019-08-154790-010-1030ND
2019-10-084790-002-1220ND
2019-10-174790-001-1210ND
2019-10-174790-002-1105ND
2019-10-174790-003-0950ND
2019-10-174790-004-0830ND
2019-10-174790-005-0910ND
2019-10-174790-007-1120ND
2019-10-174790-008-1035ND
2019-10-174790-009-0955ND
2019-10-174790-010-0900ND
2019-10-174790-015-1210ND
2019-10-174790-016-1300ND