Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Medford Water Commission

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND30ND
2021ND50ND
2022ND40ND
2023ND30ND

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
2018-06-21180691501A-VND
2019-06-111906043601-VND
2020-01-092001034901-VND
2020-01-092001034902-VND
2020-06-252006116401B-VND
2021-01-282101107501C-VND
2021-01-282101107502C-VND
2021-01-282101107501-VND
2021-01-282101107502-VND
2021-06-012106003401ND
2022-01-312201113101B-VND
2022-01-312201113102B-VND
2022-06-0222060112-01-VND
2022-06-0222060112-01A-VND
2023-01-2723010989-01-VND
2023-01-2723010989-02-VND
2023-06-1523060760-01A-VND