Monochlorobenzene (chlorobenzene)

Peoples Water Service 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.

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249

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	40	ND
2015	ND	45	ND
2016	ND	37	ND
2017	ND	41	ND
2018	ND	44	ND
2019	ND	42	ND

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	Result
2014-01-13	ND
2014-01-13	ND
2014-01-14	ND
2014-01-14	ND
2014-02-13	ND
2014-02-13	ND
2014-02-13	ND
2014-02-19	ND
2014-03-12	ND
2014-03-12	ND
2014-03-12	ND
2014-05-14	ND
2014-05-14	ND
2014-05-14	ND
2014-05-14	ND
2014-06-11	ND
2014-06-11	ND
2014-06-11	ND
2014-07-14	ND
2014-07-14	ND
2014-07-14	ND
2014-07-14	ND
2014-07-14	ND
2014-08-13	ND
2014-08-13	ND
2014-08-13	ND
2014-09-11	ND
2014-09-11	ND
2014-09-11	ND
2014-10-09	ND
2014-10-09	ND
2014-10-09	ND
2014-10-09	ND
2014-10-09	ND
2014-11-12	ND
2014-11-12	ND
2014-11-12	ND
2014-12-10	ND
2014-12-10	ND
2014-12-10	ND
2015-01-13	ND
2015-01-13	ND
2015-01-13	ND
2015-01-13	ND
2015-01-13	ND
2015-02-08	ND
2015-02-11	ND
2015-02-11	ND
2015-02-11	ND
2015-03-09	ND
2015-03-09	ND
2015-03-09	ND
2015-04-08	ND
2015-04-08	ND
2015-04-08	ND
2015-04-08	ND
2015-04-08	ND
2015-05-13	ND
2015-05-13	ND
2015-05-13	ND
2015-06-15	ND
2015-06-15	ND
2015-06-15	ND
2015-07-06	ND
2015-07-06	ND
2015-07-06	ND
2015-07-06	ND
2015-07-06	ND
2015-08-12	ND
2015-08-12	ND
2015-08-12	ND
2015-09-08	ND
2015-09-08	ND
2015-09-08	ND
2015-10-12	ND
2015-10-12	ND
2015-10-12	ND
2015-10-12	ND
2015-11-11	ND
2015-11-11	ND
2015-11-11	ND
2015-11-12	ND
2015-12-07	ND
2015-12-07	ND
2015-12-07	ND
2016-01-05	ND
2016-01-05	ND
2016-01-05	ND
2016-01-05	ND
2016-01-05	ND
2016-02-08	ND
2016-02-08	ND
2016-03-08	ND
2016-03-08	ND
2016-03-08	ND
2016-04-06	ND
2016-04-06	ND
2016-04-06	ND
2016-04-06	ND
2016-04-06	ND
2016-05-02	ND
2016-05-02	ND
2016-05-02	ND
2016-06-07	ND
2016-06-07	ND
2016-06-07	ND
2016-07-12	ND
2016-07-12	ND
2016-07-12	ND
2016-07-12	ND
2016-07-12	ND
2016-08-15	ND
2016-09-06	ND
2016-09-06	ND
2016-09-06	ND
2016-10-11	ND
2016-10-11	ND
2016-10-11	ND
2016-10-11	ND
2016-10-11	ND
2016-12-13	ND
2016-12-13	ND
2017-01-16	ND
2017-01-16	ND
2017-01-16	ND
2017-02-01	ND
2017-02-01	ND
2017-03-06	ND
2017-03-06	ND
2017-03-06	ND
2017-03-28	ND
2017-04-10	ND
2017-04-10	ND
2017-04-10	ND
2017-04-10	ND
2017-04-10	ND
2017-05-08	ND
2017-05-08	ND
2017-05-08	ND
2017-06-14	ND
2017-06-14	ND
2017-06-14	ND
2017-07-11	ND
2017-07-11	ND
2017-07-11	ND
2017-07-11	ND
2017-07-19	ND
2017-08-09	ND
2017-08-09	ND
2017-08-09	ND
2017-09-18	ND
2017-09-18	ND
2017-09-18	ND
2017-10-11	ND
2017-10-11	ND
2017-10-11	ND
2017-10-11	ND
2017-10-11	ND
2017-11-08	ND
2017-11-08	ND
2017-11-08	ND
2017-12-12	ND
2017-12-12	ND
2018-01-10	ND
2018-01-10	ND
2018-01-10	ND
2018-01-10	ND
2018-01-10	ND
2018-02-14	ND
2018-02-14	ND
2018-02-14	ND
2018-03-14	ND
2018-03-14	ND
2018-04-11	ND
2018-04-11	ND
2018-04-11	ND
2018-04-11	ND
2018-04-11	ND
2018-05-09	ND
2018-05-09	ND
2018-05-09	ND
2018-06-13	ND
2018-06-13	ND
2018-06-20	ND
2018-07-09	ND
2018-07-09	ND
2018-07-09	ND
2018-07-09	ND
2018-07-09	ND
2018-08-13	ND
2018-08-13	ND
2018-08-13	ND
2018-09-19	ND
2018-09-19	ND
2018-09-19	ND
2018-10-08	ND
2018-10-08	ND
2018-10-08	ND
2018-10-08	ND
2018-10-08	ND
2018-11-12	ND
2018-11-12	ND
2018-11-12	ND
2018-12-10	ND
2018-12-10	ND
2018-12-10	ND
2018-12-10	ND
2019-01-15	ND
2019-01-15	ND
2019-01-15	ND
2019-01-15	ND
2019-02-12	ND
2019-02-12	ND
2019-03-12	ND
2019-03-12	ND
2019-03-12	ND
2019-04-09	ND
2019-04-09	ND
2019-04-09	ND
2019-04-09	ND
2019-04-09	ND
2019-05-20	ND
2019-05-20	ND
2019-05-20	ND
2019-06-17	ND
2019-06-17	ND
2019-06-17	ND
2019-07-08	ND
2019-07-08	ND
2019-07-09	ND
2019-07-09	ND
2019-07-11	ND
2019-08-12	ND
2019-08-12	ND
2019-08-13	ND
2019-09-10	ND
2019-09-10	ND
2019-09-10	ND
2019-10-07	ND
2019-10-07	ND
2019-10-07	ND
2019-10-07	ND
2019-10-07	ND
2019-11-11	ND
2019-11-11	ND
2019-11-11	ND
2019-12-10	ND
2019-12-10	ND
2019-12-10	ND