Code of Practice

Code of Practice on Sewerage and Sanitary Works

Introduction

Singapore is characterised by abundant rainfall, high temperature and humidity. Coupled with high population density, waterborne diseases can spread easily and quickly unless a high standard of public health is maintained. Proper collection, treatment and disposal of domestic and industrial wastewater is therefore necessary to prevent the pollution of watercourses, reservoirs, rivers and the sea, and thus, the spread of diseases.

In Singapore, domestic and industrial wastewater is collected and conveyed by sewers to sewage treatment works for treatment before final discharge into the sea. Hence, it is essential that adequate care and precaution be taken to ensure that new development works do not affect the existing sewerage system. It is also important that the sanitary and sewerage system that are to be provided to serve new developments are designed and constructed properly to maintain the effectiveness of the entire sewerage system.

This Code of Practice on Sewerage and Sanitary Works is issued under Section 33 of the Sewerage and Drainage Act (Chapter 294). It aims to guide the Qualified Persons in the proper planning and design of the sanitary and sewerage system. In stipulating only the minimum and mandatory design requirements to be complied with, it is hoped that the Qualified Persons will exercise flexibility and creativity in the design of sanitary and sewerage system without compromising on functional and maintenance needs. In addition to the minimum requirements, some good engineering practices in the planning, design and construction of the sanitary and sewerage system are also given in this code.

Director
Water Reclamation (Network) Department  
Public Utilities Board
Singapore