Monochlorobenzene (chlorobenzene)

City of Plaquemine Water System

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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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	8	ND
2015	N/A	0	N/A
2016	ND	10	ND
2017	N/A	0	N/A
2018	N/A	0	N/A
2019	ND	10	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
2014-05-19	AD91670	ND
2014-05-19	AD91670	ND
2014-05-21	AD91672	ND
2014-05-21	AD91671	ND
2014-05-21	AD91672	ND
2014-05-21	AD91673	ND
2014-05-21	AD91671	ND
2014-05-21	AD91673	ND
2016-06-20	35250786003	ND
2016-06-20	35250786004	ND
2016-06-20	35250786005	ND
2016-06-20	35250786002	ND
2016-06-20	35250786001	ND
2016-06-20	35250786005	ND
2016-06-20	35250786001	ND
2016-06-20	35250786002	ND
2016-06-20	35250786003	ND
2016-06-20	35250786004	ND
2019-05-20	35469857002	ND
2019-05-20	35469857001	ND
2019-05-20	35469857001	ND
2019-05-20	35469857002	ND
2019-05-21	35470500001	ND
2019-05-21	35470500002	ND
2019-05-21	35470500001	ND
2019-05-21	35470500002	ND
2019-06-12	35475393005	ND
2019-06-12	35475393005	ND