Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Upper Hanover Water Authority

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.

 

50

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND50ND
2020ND90ND
2021ND100ND
2022ND130ND
2023ND70ND

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
2018-01-308001978-01ND
2018-04-258008140-01ND
2018-07-178017906-01ND
2018-07-258019752-01ND
2018-07-258019752-02ND
2018-10-108028641-01ND
2019-01-238038660-01ND
2019-05-079009685-01ND
2019-08-218038658-01ND
2019-09-249034252-01ND
2019-12-119033962-01ND
2020-03-1821847905.00ND
2020-03-2021847946.00ND
2020-03-2021847945.00ND
2020-04-2822024187.00ND
2020-04-2822024186.00ND
2020-06-2422417321.00ND
2020-07-0122417322.00ND
2020-10-0623183420.00ND
2020-11-2023362977.00ND
2021-03-1624061114.00ND
2021-03-1924061115.00ND
2021-04-2124248454.00ND
2021-04-3024248606.00ND
2021-07-0624829866.00ND
2021-07-0924830019.00ND
2021-10-0525405599.00ND
2021-10-2925405756.00ND
2021-12-2925765034.00ND
2021-12-2925765013.00ND
2022-02-0125943643.00ND
2022-02-0125943642.00ND
2022-02-0125943644.00ND
2022-02-2326118564.00ND
2022-02-2326118565.00ND
2022-05-0526649383.00ND
2022-05-0626649384.00ND
2022-06-0226649560.00ND
2022-06-0326649561.00ND
2022-07-0727038001.00ND
2022-07-0827038002.00ND
2022-12-0127999430.00ND
2022-12-0227999431.00ND
2023-01-0428173538.00ND
2023-04-1028703190.00ND
2023-04-1128703189.00ND
2023-04-1128703188.00ND
2023-07-0329302599.00ND
2023-10-0329700873.00ND
2023-11-2830246510.00ND