Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Marysville Utilities

NOTE: Marysville Utilities purchases water from City of Everett Public Works Department which is required to test for monochlorobenzene (chlorobenzene). Sample information shown below was taken by City of Everett Public Works 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.

 

5

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND40ND
2020N/A00N/A
2021ND10ND
2022ND20ND
2023ND10ND

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

NOTE: Marysville Utilities purchases water from City of Everett Public Works Department which is required to test for monochlorobenzene (chlorobenzene). Sample information shown below was taken by City of Everett Public Works Department.

Date Lab ID Result
2018-06-12ND
2019-06-11ND
2021-06-284139234ND
2022-06-224325407ND
2023-06-154531531ND