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EWG's Tap Water Database — 2021 UPDATE

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Monochlorobenzene (chlorobenzene)

Southwest Alabama Water Authority

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

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016ND50ND
2017N/A00N/A
2018ND90ND
2019ND130ND

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
2016-01-12AB09762ND
2016-01-13AB09761ND
2016-01-13AB09759ND
2016-01-13AB09760ND
2016-12-1916L0361-1VND
2018-01-10AB25036ND
2018-01-10AB25037ND
2018-04-09AB26320ND
2018-04-09AB26319ND
2018-08-07AB29108ND
2018-08-07AB29109ND
2018-08-07AB29110ND
2018-08-07AB29111ND
2018-10-11AB30932ND
2019-01-14AB32581ND
2019-01-14AB32580ND
2019-05-13AB35069ND
2019-05-13AB35067ND
2019-05-13AB35068ND
2019-05-13AB35065ND
2019-05-13AB35063ND
2019-05-13AB35061ND
2019-08-12AB37567ND
2019-08-12AB37568ND
2019-08-12AB37569ND
2019-12-11AB40593ND
2019-12-11AB40592ND