Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Westchester County WD #2

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND20ND
2021ND20ND
2022ND40ND
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

Date Lab ID Result
2018-05-117051465001 POCSND
2019-05-317091709001 POCSND
2020-05-0870130562 POCSND
2020-11-12AW21843-POCSND
2021-06-0470175718002-POCND
2021-07-27AX14931-POCSND
2022-05-1370214739003-POCSND
2022-05-13702147390002-POCSND
2022-05-1370214743004-POCSND
2022-09-21AY17010-POCSND
2023-07-27AZ13680-POCSND