Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Westbrook Estates

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND10ND
2021ND10ND
2022ND40ND
2023ND40ND

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
2018-10-0918J0431-02ND
2019-01-1419A0414-01ND
2020-01-1320A0470-01ND
2021-11-0821K0563-01ND
2022-01-1022A0251-01ND
2022-05-0422E0324-01ND
2022-07-1422G0889-01ND
2022-10-1022J0358-01ND
2023-02-0823B0589-01ND
2023-04-2423D1397-01ND
2023-07-1123G0454-01ND
2023-10-0923J0436-01ND