How does water leak detection work in a home?

Water leak detection in a home is a structured diagnostic that confirms if water is escaping and then pinpoints the exact source. Technicians typically start by verifying continuous water use when all fixtures are off, then narrow the location and choose the least invasive way to expose and repair it. A steady water meter movement with everything off almost always indicates a hidden pressurized-line leak. We perform these diagnostics every day for homeowners in and around Sun City as part of our plumbing repair work. If a slab leak is suspected, Deer Valley Plumbing & Air Conditioning offers a $75 slab leak diagnostic with a 4-hour arrival window, and the diagnostic fee is waived when we do the repair.

What usually happens during a visit:

• Confirm a leak: meter or pressure checks to rule out fixture use.
• Isolate the zone: shutoffs help split the system into sections.
• Pinpoint non-invasively: targeted listening and access with minimal opening.
• Verify and plan: mark the spot, price options, and schedule repair.

If you suspect a leak, shut off water to the affected area and schedule a diagnostic before damage spreads.

Updated: 2026-07-17

Need help in Sun City, AZ? Call (602) 899-0899 or book online. "Yesterday we discovered our bathroom sink was leaking, and about 24 hours later David from Deer Valley Plumbing & Air Conditioning was finishing up repairing it." — Dylan M.