Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Redhill Water Association

NOTE: Redhill Water Association purchases water from Alma Waterworks which is required to test for monochlorobenzene (chlorobenzene). Sample information shown below was taken by Alma Waterworks.

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND50ND
2021ND50ND
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

NOTE: Redhill Water Association purchases water from Alma Waterworks which is required to test for monochlorobenzene (chlorobenzene). Sample information shown below was taken by Alma Waterworks.

Date Lab ID Result
2018-01-0118004012709ND
2019-02-0519038001501ND
2020-01-0720009017401ND
2020-04-1320107011508ND
2020-07-0820191012409ND
2020-11-0220310000709ND
2021-01-1921021001907ND
2021-04-0621098014201ND
2022-04-04O196531-VOC-1ND
2023-04-10O207795-VOC-1ND