Sewerage and Drainage (Surface Water Drainage) Regulations (No. S 169 of 1999). Country/Territory Singapore Document type Regulation Date 1999 (2007) Source FAO, FAOLEX Subject Water Keyword Effluent waste water/discharge Saltwater intrusion/siltation Sewerage Surface water Geographical area Asia, Small Island Developing States, South-Eastern Asia Abstract These Regulations prohibit the discharge of silt or debris into storm water drainage systems. Full text English Website statutes.agc.gov.sg References - Legislation Implements Sewerage and Drainage Act 10 of 1999 (Chapter 294). Legislation | Singapore | 1999 (2015) Keyword: Basic legislation, Sewerage, Drainage/land reclamation, Effluent waste water/discharge, Hazardous substances, Industrial water use, Inspection, Liability/compensation, Organic waste, Public water, Waste disposal, Waste domestic sources, Waste non-domestic sources, Waterworks, Well sinking/boreholes, Certification Source: FAO, FAOLEX