Drainage Maintenance

PUB manages an extensive network of more than 7,000 km of public roadside drains and about 1,000 km of major canals and waterways. To ensure that our drains are free-flowing and perform to their designed capacities, PUB has adopted a multi-barrier approach to trapping litter and flotsam in the waterways as part of its litter management. Litter collection devices such as float booms, litter traps and gratings are placed in upstream drains at strategic locations and major rivers and canals in Singapore.

A comprehensive maintenance regime is also in place. Contractors are deployed island-wide to carry out physical cleansing, maintenance and minor structural repairs of drains and canals.

A new Department of Public Cleanliness (DPC) has been set up within the National Environment Agency, aimed at integrating the cleaning functions of public areas, including the cleansing of drains, canals and waterways. This will be done in phases from April 1, 2012. The department is set up to better manage cleaning contracts, improve service standards and to improve responsiveness to public feedback. The DPC will ensure public areas are well-cleaned, and progressively integrate existing contracts by various agencies to achieve higher operational efficiency.

The drain cleansing maintenance work, which is currently under a performance-based system, is closely monitored by PUB and DPC, where contractors are required to cleanse the drains regularly in order to meet specified cleanliness standards. PUB and DPC officers regularly audit the performance of the contractors and review the frequency of cleansing based on checks and public feedback.

PUB currently engages three cleansing contractors on a 5-year, performance-based contract, from Jan 2010 to Jan 2015.

Watershed (Sector) Contractor
Western Kim Bock Contractor Pte Ltd
Central Lian Shing Construction Co. Pte Ltd
Eastern Neo Lian Poh Construction Pte Ltd

Contractors will be penalised and paid less if the cleanliness of the drains under their charge are found to be lacking. Deductions of up to a maximum of 20% (as a percentage of the monthly payment due to the contractor) will be applied on the basis of the number of default points accumulated by the contractor for that month.

For feedback or enquires, members of the public can call PUB 24-hour Call Centre at 1800-2846600 or PUB_One@pub.gov.sg. For feedback on cleanliness of drains, canals and waterways, members of the public can call DPC hotline at 1800-600-3333 or email dpc@nea.gov.sg.

Regular desilting of canals


Cleansing of drain outlets & roadside drains

Trapping and removing flotsam and debris

Last updated on 2 Sep 2013