Knowledge base · Water supply

Can I use my water meter to check for a leak?

By the Leatmere teamChecked

Yes. With every tap, toilet, appliance and other water user off, continued movement at the meter suggests water is still passing into the property. Treat it as a useful check, not proof of the leak's exact position.

First record the meter reading or indicator, then avoid using water for a short, known period and check it again. Make sure a toilet is not refilling and that washing machines, dishwashers, water treatment equipment and outdoor outlets are inactive. A small intermittent leak may need a longer observation than a fast one.

If there is movement, check visible pipes, toilets and overflows without dismantling fittings. WaterSafe advises turning off the internal stop tap when dealing with a leak and contacting the water supplier about a leak on the outside supply pipe, because the supplier may offer help.

Ownership matters. DWI describes the communication pipe from the main to the external stop valve as the water company's, while the supply pipe from that valve towards the home is normally the owner's. Boundaries and assistance can vary, so report the evidence to the supplier.

Take photographs of the start and end readings and note the exact times. Repeat the check only when occupants can avoid flushing toilets or using water. Smart meters may show consumption differently, so follow the supplier's instructions for that model. If the reading changes quickly or water is damaging the building, do not wait for a long test: isolate the supply if safe, keep away from affected electrics and call the appropriate emergency plumber or water company.

Sources

On Leatmere

Follow find a leak and the stopcock and see stopcocks and water meters.