Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Dichlorobenzenes

Dichlorobenzenes (DCBs) are chlorinated aromatic compounds. There are three DCB isomers: 1,2-DCB, 1,3-DCB and 1,4-DCB. 1,2- and 1,3-DCB are liquids at room temperature, whereas 1,4-DCB is a solid with a melting point of 53°C. The maximum acceptable concentrations (MAC) and aesthetic objectives (AO) for 1,2- and 1,4-dichlorobenzene in drinking water are presented on this guide.