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How to Check for Leaks

Save Money and Water

Water leaks not only cause you to lose money but is also a waste of water. Learn what causes leaks and how to detect them.



Loose fittings

Fittings, such as tap washers and joints, can come loose over time.


Unlined galvanised iron pipes generally corrode after 5 or 6 years of use.


Float valves which are faulty or misaligned can cause overflow in flushing cisterns, water tanks and cooling towers. Flushing cisterns, water tanks and cooling towers should not overflow. Also check water closet pans regularly as some flushing cisterns overflow into the pan.

Overflowing or leaking water tanks and cooling towers are seldom noticed because overflow pipes are sometimes connected directly to drains and sewers, concealing discharge. Extra vigilance is therefore advised when checking water tanks and cooling towers for overflow and leakage.


You may have a leak if:
  • The meter continues to run when all taps and fittings are turned off.
  • Water consumption is unusually high.
  • The ground over buried pipes is damp.
  • There is an unexplained flow of clear water.
  • Water is rust coloured.
  • The water pressure drops.



If any of these happen:
  • Shut off the water supply.
  • Engage a licensed water service plumber to repair the leak. We would advise obtaining 2 or more quotations to compare prices before you engage the plumber.
In carrying out the repair, if you or your licensed plumber need assistance to locate position of the leak, please contact any of the parties below. Charges apply and may vary depending on the scope of work involved in detecting the leak.

For clarification on leak detection, please call PUB at 63809836/ 63809837 (From 8am to 5pm, Mon to Fri).

PUB has ceased to provide leak detector work from 1 April 2009.

If you see any leaks on roads, turfs or open areas, alert PUB by calling PUB 24-hour Call Centre at 1800-284-6600.


Learn to read your water meter:
  • Your water meter is the best detective of water leakage. If it continues to register water usage after all taps and fittings are shut, you may have a leak.
  • The meter registers consumption in cubic metres. Subtract the reading on your last bill from the current reading to find out how much water has been used.
Last updated on 25 Apr 2016