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Water Closet Replacement Project


PUB has launched a project in the older HDB flats to help households who were placed on community assistance schemes in 2017 to 2020 to replace their ​9 litres water closets with more water efficient ones. This replacement were done for free, and is aimed at helping families to save water. 

PUB had also replaced the existing non-water efficient basin taps/mixers and kitchen taps/mixers at the same time. 

When were these older estates built?

These older estates refer to the HDB flats built between 1987 and 1992.

How much water can these households save after installing a water efficient water closet? 

In general, households can save up to 5 litres of water for each flush with the replacement of their  water closets. Overall, they can save up to 10% in their monthly water bills. 

Save Monthly Bill Up to 10%

What was the duration of the project?

The project started in June 2017 and ended in November 2020.

Water Closet

What is a water closet?

A water closet is a flushing toilet that can be either a sitting or squatting type.

What is considered as a non-water efficient water closet?

Water closets that use 9 litres of water for each flush and do not have a dual flush option are considered as non-water efficient water closet.

Non-Water Efficient Water Closet Non-Water Efficient Water Closet

Non-Water and Water Efficient Water Closet Comparison

What is considered a water efficient water closet?

Water efficient water closets come with a dual-flush option and do not use water exceeding 4.5 litres for each full flush and 3 litres for each half flush.

New Water Efficient Water Closet New Water Efficient Water Closet New Water Efficient Water Closet




During Office Hours

From Mondays to Fridays, between 9am and 5.30pm

Contact us at (65) 6380 9874

For Non-office Hours

Call us at 1800-CALL-PUB (1800-2255-782) or e-mail us at

Useful Links

Click here for more information on HDB’s Home Improvement Programme (HIP).