Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Port Sulphur Water District

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND40ND
2020ND30ND
2021ND40ND
2022ND10ND
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
2018-01-3035371297001ND
2018-01-3035371297001ND
2019-02-0535446733001ND
2019-02-0535446733001ND
2019-05-3035472024001ND
2019-05-3035472024001ND
2020-03-1035536681001ND
2020-03-1835538502001ND
2020-11-1835593410001ND
2021-03-0135615732001ND
2021-03-0135615734001ND
2021-09-1335663084001ND
2021-10-2635673864001ND
2022-01-1335690764001ND
2023-02-0135777177001ND
2023-10-0335831861001ND
2023-10-0535832714001ND
2023-10-1135834155001ND