Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Mars Borough Water Works

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND10ND
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
2018-07-1718G1584-01ND
2019-08-1619H2178-01ND
2020-11-1323454858.00ND
2021-12-0625861438.00ND
2021-12-0625861459.00ND
2021-12-0725861480.00ND
2022-05-1326754596.00ND
2022-08-0427346615.00ND
2022-08-0427346636.00ND
2023-05-0929011453.00ND
2023-06-0529214306.00ND
2023-09-0629801323.00ND