Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

North Wales 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.

 

69

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND130ND
2019ND120ND
2020ND120ND
2021ND110ND
2022ND110ND
2023ND100ND

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
2018-03-1220180932ND
2018-03-1220180940ND
2018-03-1220180939ND
2018-03-1220180938ND
2018-03-1220180937ND
2018-03-1220180936ND
2018-03-1220180935ND
2018-03-1220180934ND
2018-03-1220180933ND
2018-03-1320180956ND
2018-06-0520182148ND
2018-09-0420183373ND
2018-12-1820184775ND
2019-03-0520190857ND
2019-03-1220190960ND
2019-03-1220190956ND
2019-03-1220190964ND
2019-03-1220190957ND
2019-03-1220190963ND
2019-03-1220190962ND
2019-03-1220190958ND
2019-03-1220190961ND
2019-03-1220190959ND
2019-09-0320193443ND
2019-12-0320194748ND
2020-03-0321849475.00ND
2020-03-0321849454.00ND
2020-03-0321849433.00ND
2020-03-0321849496.00ND
2020-03-0321849517.00ND
2020-03-0321849538.00ND
2020-03-0321849412.00ND
2020-03-0321849559.00ND
2020-06-0222418588.00ND
2020-06-0222418609.00ND
2020-09-0123001543.00ND
2020-12-0123539417.00ND
2021-03-0124062318.00ND
2021-03-0124062402.00ND
2021-03-0124062276.00ND
2021-03-0124062381.00ND
2021-03-0124062360.00ND
2021-03-0124062339.00ND
2021-03-0124062297.00ND
2021-03-0224062423.00ND
2021-06-0124640236.00ND
2021-09-0925222355.00ND
2021-12-1425766385.00ND
2022-03-0126289339.00ND
2022-03-0926289255.00ND
2022-03-0926289318.00ND
2022-03-0926289297.00ND
2022-03-0926289192.00ND
2022-03-0926289234.00ND
2022-03-0926289213.00ND
2022-03-0926289276.00ND
2022-06-0726844668.00ND
2022-09-2027443460.00ND
2022-12-0628000366.00ND
2023-03-0728523018.00ND
2023-03-0828522955.00ND
2023-03-0828522913.00ND
2023-03-0828522997.00ND
2023-03-0828522976.00ND
2023-03-0828522934.00ND
2023-06-0529110414.00ND
2023-06-1929110363.00ND
2023-09-1229701914.00ND
2023-11-1730073316.00ND