Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Nocona Hills 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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
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
2018-12-10Q1850817001ND
2018-12-10Q1850817004ND
2019-02-20Q1907488002ND
2019-02-20Q1907488007ND
2020-09-21Q2037478001ND
2020-09-21Q2037478003ND
2021-06-21Q2116016005ND
2021-06-21Q2116016007ND
2022-05-10Q2213917001ND
2022-05-10Q2213917003ND
2023-07-05Q2326100006ND
2023-07-05Q2326100008ND
2023-10-03Q2342315001ND