Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Westside Rural Water Supply Corporation

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2018-10-30Q1843596003ND
2018-10-30Q1843596006ND
2018-10-30Q1843596007ND
2018-10-30Q1843596002ND
2019-05-07Q1920849002ND
2019-05-07Q1920849004ND
2019-05-07Q1920849006ND
2019-05-07Q1920849008ND
2020-01-23Q2002763003ND
2020-01-23Q2002763005ND
2020-01-23Q2002763007ND
2020-01-23Q2002763009ND
2021-01-25Q2101699010ND
2021-01-25Q2101699016ND
2021-01-25Q2101699014ND
2021-01-25Q2101699012ND
2022-11-10Q2233973002ND
2022-11-10Q2233973004ND
2022-11-10Q2233973006ND
2022-11-10Q2233973008ND
2023-03-20Q2310439002ND
2023-06-21Q2323858001ND
2023-06-21Q2323858003ND
2023-06-21Q2323858005ND