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Plumbing

Five Signs of a Hidden Water Leak in Your Home

Not every leak announces itself with a puddle. Some run quietly behind a wall or under the floor for weeks, and by the time you spot the damage the repair is far bigger than it needed to be. Here’s how to catch one early.

At a glance

  • Hidden leaks can run for weeks behind walls and under floors.
  • Watch for rising bills, damp or mould, low pressure and the sound of running water.
  • The meter test is the simplest way to confirm one.
  • Left alone, a small leak can become structural — and expensive.

Why hidden leaks matter

A slow leak wastes water constantly and can rot timber, ruin plaster and encourage mould long before you see a drop. Catching it early is the difference between a small repair and a big one.

Five signs to watch for

  • A rising water bill with no change in use.
  • Damp patches, staining or mould on walls, ceilings or floors.
  • A musty smell that won’t shift.
  • Low water pressure that’s crept in.
  • The sound of running water when everything’s off.

The meter test

Turn off every water outlet in the house, then read your water meter. Wait an hour or two without using any water and read it again. If it’s moved, water is escaping somewhere — you have a leak.

What to do next

If the meter test points to a leak but you can’t see it, don’t start pulling up floors on a hunch. We can trace it properly and fix only what needs fixing.

Bills up, damp appearing, or the meter creeping when everything’s off? We’ll trace the leak and put it right before it does real damage. South Manchester and Cheshire.

See our plumbing service

Common questions

Watch for a rising water bill, damp or musty patches, low pressure, or the sound of running water when everything is off.

Turn off every outlet, read the meter, wait an hour or two using no water, then read again. If it has moved, water is escaping somewhere.

They can be — a slow leak can rot timber and ruin plaster long before you see it, so catching one early saves a far bigger repair.

Yes — we trace leaks properly rather than guessing, so we only open up where the leak actually is.