Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Lakewood Water District

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND110ND
2020N/A00N/A
2021ND20ND
2022ND40ND
2023N/A00N/A

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
2018-03-22ND
2018-07-12ND
2018-07-12ND
2018-07-12ND
2018-07-25ND
2018-07-25ND
2018-07-25ND
2018-08-27ND
2019-06-19ND
2019-06-19ND
2019-06-19ND
2019-06-19ND
2019-06-19ND
2019-06-19ND
2019-06-21ND
2019-06-21ND
2019-06-21ND
2019-06-21ND
2019-07-23ND
2021-05-054115227ND
2021-05-054115955ND
2022-05-114286300ND
2022-05-114286297ND
2022-05-114286299ND
2022-08-114331437ND