Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Wallingford Water Department

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.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND60ND
2020ND60ND
2021ND60ND
2022ND50ND
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
2018-03-05BZ98169ND
2018-04-17CA21065ND
2018-06-28CA80407ND
2018-07-17CA91980ND
2018-08-14CB11135ND
2018-10-11CB69933ND
2019-02-21CC55842-02ND
2019-03-06CC62592-02ND
2019-03-06CC62591-02ND
2019-04-08CC90384ND
2019-07-08CD51593ND
2019-10-10CE30938-VOCND
2020-02-03CF25156ND
2020-02-05CF27861ND
2020-03-11CF48935ND
2020-04-08CF71118ND
2020-08-12CG53027ND
2020-10-07CG95538ND
2021-02-03CH55990-VOCND
2021-03-10CH75493ND
2021-04-07CH94007ND
2021-04-07CH94005ND
2021-09-15CJ30037ND
2021-10-06CJ50288ND
2022-02-07CK32469-VOCND
2022-03-09CK82546ND
2022-04-06CL02035-VOCND
2022-08-10CM01614ND
2022-11-16CM86907ND
2023-01-11CN21046ND
2023-02-06CN36383ND
2023-04-12CN81747ND
2023-07-12CO49576ND
2023-10-26CP34585ND