Monochlorobenzene (chlorobenzene)

Rehoboth District

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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119

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	20	ND
2015	ND	23	ND
2016	ND	18	ND
2017	ND	18	ND
2018	ND	20	ND
2019	ND	20	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	Lab ID	Result
2014-03-05	S479051	ND
2014-03-05	S479052	ND
2014-03-05	S479053	ND
2014-03-05	S479054	ND
2014-05-15	S479194	ND
2014-06-02	S479123	ND
2014-06-02	S479124	ND
2014-06-02	S479125	ND
2014-06-02	S479126	ND
2014-07-28	L5175318-1	ND
2014-09-03	S479191	ND
2014-09-03	S479192	ND
2014-09-03	S536964	ND
2014-09-03	S536965	ND
2014-10-15	S257741	ND
2014-10-21	S251486	ND
2014-12-01	S316446	ND
2014-12-01	S316447	ND
2014-12-01	S316448	ND
2014-12-01	S316449	ND
2015-01-14	S504599	ND
2015-03-02	S580502	ND
2015-03-02	S580503	ND
2015-03-02	S580504	ND
2015-03-02	S580505	ND
2015-05-27	S612405	ND
2015-06-01	S612414	ND
2015-06-01	S612415	ND
2015-06-01	S612416	ND
2015-06-01	S612417	ND
2015-08-10	S590347	ND
2015-08-26	S602019	ND
2015-09-09	S602035	ND
2015-09-09	S602036	ND
2015-09-09	S602037	ND
2015-09-09	S602038	ND
2015-10-20	S614746	ND
2015-10-20	S614747	ND
2015-11-05	S624991	ND
2015-12-07	S625009	ND
2015-12-07	S625010	ND
2015-12-07	S625011	ND
2015-12-07	S625012	ND
2016-03-07	S602103	ND
2016-03-07	S602104	ND
2016-03-07	S602105	ND
2016-03-07	S602106	ND
2016-04-11	S73229	ND
2016-04-11	S73230	ND
2016-06-06	S629046	ND
2016-06-06	S629047	ND
2016-06-06	S629048	ND
2016-06-06	S629049	ND
2016-09-07	S670379	ND
2016-09-07	S670380	ND
2016-09-07	S670381	ND
2016-09-07	S670382	ND
2016-12-05	S670400	ND
2016-12-05	S670401	ND
2016-12-05	S670402	ND
2016-12-05	S670403	ND
2017-01-24	S670498	ND
2017-03-06	S679363	ND
2017-03-06	S679364	ND
2017-03-06	S679365	ND
2017-03-06	S679366	ND
2017-06-06	S730806	ND
2017-06-06	S730807	ND
2017-06-06	S730808	ND
2017-06-06	S730809	ND
2017-07-31	S679387	ND
2017-09-05	S737137	ND
2017-09-05	S737141	ND
2017-09-05	S737145	ND
2017-09-05	S737149	ND
2017-12-04	S659090	ND
2017-12-04	S670396	ND
2017-12-04	S679375	ND
2017-12-04	S679379	ND
2018-01-24	S730853	ND
2018-03-06	S770612	ND
2018-03-06	S770616	ND
2018-03-06	S770620	ND
2018-03-06	S770624	ND
2018-06-04	S770754	ND
2018-06-04	S770806	ND
2018-06-04	S770833	ND
2018-06-20	S770575	ND
2018-09-05	S812289	ND
2018-09-05	S812293	ND
2018-09-05	S812297	ND
2018-09-05	S812301	ND
2018-09-10	S812241	ND
2018-11-09	S812575	ND
2018-11-09	S812577	ND
2018-12-05	S817013	ND
2018-12-05	S817017	ND
2018-12-05	S817021	ND
2018-12-05	S817029	ND
2019-03-04	S847933	ND
2019-03-04	S847937	ND
2019-03-04	S847941	ND
2019-03-04	S847945	ND
2019-04-29	S847993	ND
2019-04-29	S847995	ND
2019-05-28	S848014	ND
2019-05-28	S848015	ND
2019-06-03	S848059	ND
2019-06-03	S848063	ND
2019-06-03	S848067	ND
2019-06-03	S848071	ND
2019-09-03	S864697	ND
2019-09-03	S864701	ND
2019-09-03	S864705	ND
2019-09-03	S864709	ND
2019-12-03	S919907	ND
2019-12-03	S919911	ND
2019-12-03	S919915	ND
2019-12-03	S919919	ND