How to Check Your Water Meter for a Leak

A two-minute meter check is the fastest way to confirm a leak. Turn off every fixture, open the meter box at the curb, and watch the dial or flow triangle. If anything moves with all water off, water is escaping somewhere. Shutting the main house valve next tells you whether the leak is inside or in the yard line.

What you need

Almost nothing. A flat screwdriver or a meter key to lift the box lid, and a phone to photograph the dial. The whole test takes about two minutes, and it is easier with two people. One at the meter, one at the valves.

Reading the meter

Open the meter box at the curb and flip up the meter lid. You will see numbered dials and, on most modern meters, a small triangle or star-shaped flow indicator. That little triangle is the sensitive one. It spins with even a tiny flow. With every fixture in the house off, that triangle should be dead still. If it is creeping or spinning, water is moving through the meter, which means water is escaping somewhere past it.

Take a photo of the dial position. Wait a few minutes without using any water, then photo it again. Numbers that climbed confirm it.

Inside or outside? Isolate it in four steps

Everything off, check the meter. If the dial is still, you likely have no leak. Or it is intermittent. If it moves, keep going.
Shut the main house valve and re-check. The main shut-off is usually where the line enters the house or at the hose bib. If the meter stops, the yard line from the meter to the house is fine and the leak is inside.
Shut the irrigation valve and re-check. Sprinkler zones are a top suspect in Citrus Heights. If the meter stops now, the leak is in the irrigation system.
Shut the water heater's cold inlet valve and re-check. This kills all hot water flow. If the meter stops, the leak is on a hot line. Which, under a slab, often shows up as a warm spot on the floor.

If the meter is still moving after all four, the leak is in the main line between the meter and the house, or in a section with no isolation valve. Time to call a professional with acoustic equipment.

What to do with your result

Meter still with everything off: no active leak right now. If the bill is still high, check toilets and irrigation timers, or re-test at night when nothing runs.

Meter moving, leak isolated to a section: you have done the hard part. Note which valve stopped it and call AquaTrace Leak Detection at (123) 456-7890. Telling us which section failed saves diagnostic time.

Meter moving and you cannot isolate it: this is where you call a pro. Electronic listening gear pinpoints the exact spot so nobody digs up the whole yard. See how plumbers find hidden leaks.

Frequently asked questions

Do I need to turn off the ice maker and water softener too?

Yes. Anything that can draw water on its own, including ice makers, water softeners, pool auto-fill valves, and irrigation timers. Even a softener regenerating at 2 a.m. will spin the dial and give you a false positive.

My meter dial moves very slowly. Is that still a leak?

Yes. The flow triangle is designed to catch tiny flows. A slow creep usually means a small leak. A running toilet, a pinhole, or a weeping irrigation valve. Small leaks still waste thousands of gallons over a billing cycle.

Where is my main house shut-off valve?

In most Citrus Heights homes it is where the water line enters the house. Often at the front hose bib, in the garage, or near the water heater. It is worth finding it before you need it in an emergency.

The meter stopped when I shut the irrigation valve. Now what?

The leak is in the sprinkler system. A cracked head, a split lateral line, or a valve that does not fully close. Walk each zone while it runs and look for geysers, soggy spots, or one zone with weak pressure. See our irrigation leak detection service if you cannot find it.

Can a leak be intermittent and pass the meter test?

Yes. Irrigation leaks only flow when the zone runs, and some slab leaks only show under pressure changes. If the bill says leak but the meter says no, test again while each irrigation zone runs, and at night when the house is quiet.

Think you have a leak?

Call AquaTrace Leak Detection to describe what you are seeing in Citrus Heights and get a plan to find it.

Call (123) 456-7890

Last updated: October 25, 2026.