Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

City of Refugio

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND20ND
2020ND60ND
2021ND30ND
2022ND30ND
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
2018-02-20AE14479ND
2019-06-10AE69760ND
2019-08-15AE78928ND
2020-03-12AF02613ND
2020-03-12AF02617ND
2020-03-12AF02619ND
2020-04-15AF06851ND
2020-07-30AF21425ND
2020-10-28AF32676ND
2021-08-19AF67170ND
2021-08-19AF67184ND
2021-08-19AF67182ND
2022-04-29AF95106ND
2022-04-29AF95108ND
2022-04-29AF95110ND
2023-02-16AG29329ND
2023-02-16AG29333ND
2023-06-05AG43020ND