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EWG's Tap Water Database — 2021 UPDATE

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Monochlorobenzene (chlorobenzene)

River Woods On Lake Oconee S/d

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.

 

9

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
2016ND20ND
2017ND10ND
2018ND10ND
2019ND50ND

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
2016-08-16AJ22836ND
2016-08-16AJ22837ND
2017-06-19AJ57836ND
2018-05-14AJ89438ND
2019-05-02AK16205ND
2019-05-02AK16206ND
2019-05-02AK16207ND
2019-07-24AK23352ND
2019-10-14AK35008ND