Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

City of Overton

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
2023ND20ND

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
2018-03-13Q1810105002ND
2018-03-13Q1810105003ND
2018-06-11Q1823066006ND
2019-04-15Q1914977001ND
2019-04-15Q1914977004ND
2020-05-14Q2019538003ND
2020-05-14Q2019538005ND
2021-05-03Q2111069004ND
2021-10-21Q2129818002ND
2022-06-27Q2217839002ND
2022-06-27Q2217839004ND
2023-05-25Q2319666002ND
2023-05-25Q2319666004ND