Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

City of Caldwell

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
2018N/A00N/A
2019ND70ND
2020N/A00N/A
2021ND100ND
2022N/A00N/A
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
2019-08-06V1938594ND
2019-08-06V1938597ND
2019-08-19V1941181ND
2019-08-19V1941183ND
2019-08-19V1941174ND
2019-08-19V1941177ND
2019-08-19V1941179ND
2021-06-30V2132702ND
2021-06-30V2132703ND
2021-08-02V2139301ND
2021-08-02V2139302ND
2021-09-16V2148955ND
2021-09-16V2148956ND
2021-10-28V2158341ND
2021-10-28V2158343ND
2021-10-28V2158342ND
2021-11-15V2162140ND