Parameters Permissible limits before discharge into sewer without terminal STP or not connected to public sewers Permissible limits before discharge into public

Parameters Permissible limits before discharge into sewer without terminal STP or not connected to public sewers Permissible limits before discharge into public sewers with terminal STP (General standards as per EPA, 1986) pH 6.5-9.0 5.5-9.0 Suspended Solids 100 mg/l 600 mg/l Oil & Grease 10 mg/l 20 mg/l BOD 30 mg/l 350 mg/l COD 250 mg/l - Bio-assay 90% survival of fish after 96 hrsin 100% effluen (Extractive summary — verify with official source.)