You can check for a hidden water leak by using your water meter when no water is being used, testing your toilets for a silent leak, and looking and listening around the places where pipes run. These simple checks can suggest whether water is escaping, even when you cannot see it.
They will not always tell you exactly where a leak is. They do help you decide whether it is worth getting a professional to look further.
Use Your Water Meter
If your home has a water meter, make sure no taps, appliances or toilets are running. Take a reading, then avoid using any water for a while and read it again. Anglian Water suggests waiting around half an hour to an hour if you turn off the internal stop tap, or about an hour for an outside meter check.
If the reading has moved while nothing was in use, water may be escaping somewhere. Bear in mind that some flats and converted houses share a supply, so the meter can pick up a neighbour’s use. In that case, contact your water company for advice.
Test Your Toilets
Leaking toilets are a common source of wasted water that is easy to miss. Thames Water suggests drying the back of the toilet pan and placing a sheet of dry toilet paper there. Leave it for at least three hours without flushing.
If the paper is wet or torn when you come back, water may be trickling from the cistern into the pan. Thames Water says this is usually caused by a faulty flush valve or fill valve.
Look and Listen Around the Home
Walk around your home when it is quiet. Listen near walls, floors and the loft for hissing or running water when nothing is switched on. Look under sinks, behind toilets and around the washing machine and dishwasher for drips, swollen wood or water marks.
Outside, check for a patch of lawn that stays green or soggy in dry weather, or a damp area along a path. These can hint at a leak on an underground pipe, though they can have other causes too.
A single sign on its own is rarely proof of a leak. A damp patch might be condensation, and a higher bill might come from extra use. What matters is whether several clues point the same way.
When to Get It Checked Further
If your checks suggest water is escaping but you cannot find where, it is time for a closer look. Do not lift floors, open walls or take fittings apart to search. That can cause more damage and still miss the leak.
Our leak detection service in Oxford can look into the signs you have found and help narrow down where the water might be going. Keep a note of your meter readings and anything you have spotted, as these details make the search quicker and more focused.