How the test works
The meter counts every drop that enters your property. If nothing inside or outside is using water and the meter still moves, water is going somewhere: a running toilet, an irrigation valve, or a leak in a wall or under the slab.
The meter is usually in a box near the curb. It belongs to your water provider, so lift the lid carefully, watch out for insects, and do not tamper with the provider's valve.
Run the test
Stop all water use
Turn off faucets, the washer, dishwasher, ice maker and irrigation. Make sure no toilet is refilling.
Read the meter
Note the reading and look for a small leak indicator dial or symbol that spins with low flow.
Wait
Leave everything off for a set time, such as an hour, without using water.
Read again
If the reading changed or the indicator moved, something is using water.
Narrow it down
Close the main house shutoff and recheck. If the meter still moves, the leak may be between the meter and the house.
Test log
| Date | Start reading | End reading | Minutes | Main shutoff closed? | Result |
|---|---|---|---|---|---|
Reading the result
- IfMeter still with everything offThenNo sign of a leak right now; repeat occasionally.
- IfMeter moves, stops when house main is closedThenThe leak is likely inside the house; check toilets first, then call a plumber.
- IfMeter moves even with house main closedThenPossible leak on the line to the house or irrigation; call a plumber, and the provider if it is on their side.
Common questions
Does meter movement mean I need a repipe?
No. It means something is using water. A plumber can locate the cause, which may be a simple repair.
Can a slab leak show on the meter?
Yes, a leaking supply line under the slab uses water like any other leak.
Who do I call about the meter itself?
Your water provider, named on your water bill.
General information for Yorba Linda, not a quote or professional advice. In an emergency, call 911.