Hidden Water Leaks: 7 Warning Signs and What to Do About Them

The leaks that cost the most are rarely the dramatic ones. A burst pipe is obvious and gets fixed fast. A slow leak behind a wall or under a floor can run for months, feeding mould, rotting wood and quietly raising your water bill.

Knowing the warning signs lets you act while the repair is still small.

Seven warning signs of a hidden leak

1. A water bill that rises without a change in how you use water. 2. A water meter that keeps moving when every tap is closed. 3. Damp patches, stains or bubbling paint on walls and ceilings. 4. A musty smell or visible mould. 5. Warped, soft or lifting floors. 6. The sound of running or dripping water when nothing is on. 7. Low water pressure that appeared suddenly.

Any one of these deserves a closer look, and two or more together are a strong signal to call a plumber.

A simple meter test you can do today

Close all taps and switch off appliances that use water, such as the washing machine and dishwasher. Write down the reading on your water meter, wait one to two hours without using any water, then read it again. If the number changed, water is going somewhere it should not.

If the meter stays still but you still suspect a problem, the leak may be on the hot water side or in the heating system, which needs a professional check.

How professionals find the leak without breaking your walls

Modern leak detection uses acoustic listening devices, thermal imaging and pressure testing to locate the exact point of a leak. This means repairs can be targeted, and you avoid opening floors and walls more than necessary.

Once the leak is found, damaged pipe sections or fittings are replaced, and the area is dried properly so that mould cannot develop.

Preventing leaks in the future

Old pipes, worn seals and badly made joints are the usual causes. Regular inspection of the plumbing, replacing ageing connections and fitting a water shut-off valve you can reach quickly will limit the damage if something does fail. PERGAS plumbers repair, replace and install plumbing for homes and businesses, including leak detection and repair.