7 signs of a slab leak (and what to do next)
Most homes in Coral Gables sit on concrete slabs. Here’s how to tell if a pipe under yours is leaking.
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When water is pouring from a burst pipe, every minute counts. Shutting off the main valve stops water to the whole house. It’s worth finding yours now, before you need it.
Where to look
Most South Florida homes are built on slabs without basements, so the main shut-off is usually where the water line enters the house:
- On an outside wall, often near a hose bib
- In the garage, near the water heater or laundry
- In a utility closet or near the water heater indoors
- In condos, often in a closet, near the water heater or in a hallway access panel
If you can’t find it inside, follow the line from the street meter toward the house. The valve is usually along that path.
How to shut it off
- 1
Identify the valve type
A lever-style ball valve turns a quarter turn. A round gate valve needs several turns clockwise.
- 2
Close it
Turn the lever so it’s across the pipe, or turn the wheel clockwise until it stops. Don’t force a stuck valve.
- 3
Open a faucet
Open a faucet at the lowest point of the house to drain pressure from the lines.
- 4
Turn off the water heater
If the water will be off for a while, follow your water heater’s instructions for power or gas.
Using the meter valve
The meter box near the street usually has a valve too. It often needs a meter key, and some utilities prefer you call them. Use it only in an emergency when the house valve won’t work.
Leak stopped, but where is it?
Once the water is off, the next step is finding the source. Call for 24/7 emergency leak detection.
Common questions
Should I test my shut-off valve?
Yes. Turn it off and on once a year so it doesn’t seize. If it leaks or won’t turn, have it replaced.
Will shutting off the water stop a slab leak?
Yes, closing the main stops water flowing to the leak. You’ll still need to find and repair it.
