Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Paw Blue Mountain Division

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND20ND
2020ND50ND
2021ND40ND
2022ND40ND
2023ND50ND

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
2018-01-1038160101ND
2019-01-0942498201ND
2019-07-1645238801ND
2020-04-2222086235.00ND
2020-04-2922086544.00ND
2020-04-2922086565.00ND
2020-05-1122278288.00ND
2020-05-1122278309.00ND
2021-04-1224308434.00ND
2021-04-1224308455.00ND
2021-07-2124889770.00ND
2021-07-2124889791.00ND
2022-04-1826522962.00ND
2022-04-1826522983.00ND
2022-08-0327300361.00ND
2022-08-0427300342.00ND
2023-04-1028766753.00ND
2023-04-1028766734.00ND
2023-04-1128766707.00ND
2023-04-1128766703.00ND
2023-06-0729172442.00ND