To check for leaks with your water meter, turn off every faucet and water-using appliance, then look at the meter’s leak indicator or dial. If it moves while nothing is running, water is escaping somewhere in your plumbing.
Finding Your Meter
Many homes have the water meter in the basement, often near the front wall where the main line comes in. Some meters are in a box near the curb or sidewalk. If yours is outdoors, the lid may be heavy, so lift it carefully and watch for insects or standing water.
Parts of the Meter
- The number display: works like a car odometer and shows total water used.
- The sweep hand: a large pointer that turns as water flows.
- The leak indicator: a small triangle, star, or wheel that spins with even tiny amounts of flow.
Digital meters may show a flow rate or a faucet symbol instead.
How to Do the Test
- Make sure no one will use water during the test
- Turn off faucets, the dishwasher, washer, and ice maker
- Look at the leak indicator for a minute or two
- Write down the full reading
- Wait 30 minutes to an hour, then check the reading again
If the indicator spins or the numbers change, you likely have a leak. A slow change can point to a running toilet or a dripping faucet. A fast change may mean a bigger leak in a pipe.
Narrowing It Down
Close the main shut-off valve inside the house and check the meter again. If it still moves, the leak may be in the line between the meter and the house. If it stops, the leak is inside. Toilets are a common culprit, so test them with a few drops of food coloring.
If the meter shows a leak but you cannot find it, locating a hidden leak can save you from guessing. For help with the test itself, you can call a local plumber with questions at (833) 603-1840.