Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Groveland Water Department

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020ND50ND
2021ND50ND
2022ND50ND
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 Result
2020-02-05ND
2020-04-01ND
2020-04-01ND
2020-07-15ND
2020-10-05ND
2021-01-20ND
2021-04-05ND
2021-04-05ND
2021-07-21ND
2021-10-18ND
2022-02-02ND
2022-04-04ND
2022-04-04ND
2022-07-20ND
2022-11-02ND
2023-01-18ND
2023-05-03ND
2023-05-03ND
2023-07-19ND
2023-10-04ND