Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Bayview 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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019N/A00N/A
2020N/A00N/A
2021ND30ND
2022ND40ND
2023ND50ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-07-16L7037550-1ND
2018-08-23L7052375-1ND
2021-08-12630-20635-1ND
2021-08-24630-21100-1ND
2021-11-19630-24489-1ND
2022-03-28630-29935-1ND
2022-05-10630-33114-1ND
2022-07-27630-40913-1ND
2022-11-08630-49307-1ND
2023-02-15630-55638-1ND
2023-05-15630-61145-1ND
2023-07-31630-68133-1ND
2023-08-09630-69049-1ND
2023-11-08630-75543-1ND