Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

San Antonio Water Company

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND90ND
2020ND10ND
2021N/A00N/A
2022ND100ND
2023N/A00N/A

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
2019-07-16CA3610085_002_002-201907161140ND
2019-07-16CA3610085_018_018-201907161130ND
2019-07-16CA3610085_017_017-201907161330ND
2019-07-16CA3610085_011_011-201907161250ND
2019-07-16CA3610085_013_013-201907161350ND
2019-07-16CA3610085_016_016-201907161200ND
2019-07-16CA3610085_001_001-201907161100ND
2019-07-16CA3610085_003_003-201907161305ND
2019-07-17CA3610085_004_004-201907170800ND
2020-04-07CA3610085_021_021-202004071020ND
2022-07-20CA3610085_018_018-202207201300ND
2022-07-20CA3610085_011_011-202207201010ND
2022-07-20CA3610085_004_004-202207200945ND
2022-07-20CA3610085_001_001-202207201200ND
2022-07-20CA3610085_013_013-202207201130ND
2022-07-20CA3610085_002_002-202207201230ND
2022-07-20CA3610085_017_017-202207201100ND
2022-07-20CA3610085_003_003-202207201030ND
2022-07-21CA3610085_016_016-202207211030ND
2022-07-21CA3610085_021_021-202207210945ND