Why Does My Water Meter Move When No Water Is Running?

Start by turning off all water-using appliances and fixtures, including ice makers and outdoor spigots. Then watch the meter's low-flow indicator. If it spins or moves, water is passing through the meter, which means a leak likely exists somewhere downstream.

Common leak spots include toilet flapper valves, dripping faucets, and underground irrigation lines. A toilet that runs intermittently can be easy to miss. Listen for the sound of running water near your fixtures, and check for damp spots on floors and walls.

• Inspect toilet tanks for a running flapper
• Look for wet patches in crawl spaces or on the lowest floor
• Check outdoor spigots and irrigation valves
• Feel walls for moisture, especially near bathrooms
• Monitor your water bill for sudden increases

Leaks inside walls or under concrete slabs are often the culprit. A slab leak can cause your meter to move even when you see no visible water. Listen for the sound of rushing water near your foundation, and check for warm spots on the floor if you have radiant heating.

If you have a hot water recirculating pump, it may cycle water and cause slight meter movement. Also, check your water softener or filtration system for a stuck valve. These systems can occasionally let water pass without you noticing.

If the cause is a hidden leak behind walls or under concrete, you may need professional help to find it. Water damage pros use specialized equipment to detect moisture without tearing open your home. They can also assess the extent of any damage and begin drying affected areas.

If you notice water stains on ceilings or warping in wood floors, that is a sign of a longer-term leak. In such cases, water damage inspection and documentation services can help you record the damage for your records. Policies vary, and your insurer decides what is covered.