Residential Leak detection & repairs
Residential Leak Detection & Repairs in North County San Diego
When it comes to leak detection in North County San Diego, Alonso Plumbing Inc. uses professional detection equipment to locate leaks accurately — inside walls, under slabs, and underground — without unnecessary damage to your home. A hidden leak can cause thousands of dollars in water damage before you even know it’s there. Whether it’s a slow drip behind a wall or a pressurized pipe leak under your foundation, we find it fast, fix it correctly, and make sure it doesn’t come back.
Licensed & Insured
Same-Day Service
Upfront Pricing
Leak Detection & Diagnosis
Not sure where your leak is coming from? We use professional detection equipment to pinpoint the exact location of any leak in your home — no guessing, no unnecessary damage, just an accurate diagnosis and honest solution.
Pipe Leak Repair
From small drips to pressurized pipe bursts, we repair all types of residential pipe leaks quickly and correctly. We fix the source of the problem — not just the symptom — using quality materials built to last.
Slab Leak Detection & Repair
Slab leaks are one of the most damaging and deceptive plumbing problems a homeowner can face. We locate slab leaks accurately using professional detection equipment and repair them fast before serious structural damage sets in.
Water Leak Line Repair
A leaking main water line can flood your yard, spike your water bill, and damage your foundation. We locate and repair residential water line leaks quickly and correctly — minimizing excavation and getting your water supply fully restored.
Emergency Leak Detection & Repair
A sudden or uncontrolled leak in your home needs immediate attention. We respond to residential leak emergencies 24 hours a day 7 days a week throughout North County San Diego — fast response, upfront pricing, job done right.
Why Us
#1 Trusted Leak Detection Team in North County San Diego
Licensed & Experienced
With years of hands-on experience and full licensing in California, our team delivers quality workmanship you can trust on every job.
Honest & Transparent
No surprises, no hidden fees. We give you upfront quotes before any work begins so you always know exactly what you're paying for.
Fast & Reliable Service
We show up on time, work clean, and don't leave until the job is done right. Same-day service available for urgent repairs.
Frequently Asked Questions
How do I know if I have a hidden leak in my home?
Common signs of a hidden leak include unexpectedly high water bills, water stains on walls or ceilings, damp or soft spots on floors, mold or mildew growth, the sound of running water when nothing is turned on, and low water pressure throughout the home. If you notice any of these signs contact a licensed plumber immediately — hidden leaks cause serious structural damage and get significantly more expensive the longer they go undetected.
What is a slab leak and how do I know if I have one?
A slab leak is a water leak that occurs in the pipes running beneath the concrete foundation of your home. Because the pipes are hidden under the slab they can go undetected for months while silently causing serious structural damage. Common signs include warm spots on your floor, the sound of running water when nothing is turned on, unexpectedly high water bills, cracks appearing in your walls or flooring, and damp or wet carpet with no obvious source. If you suspect a slab leak call us immediately — the longer it goes undetected the more expensive the damage becomes. To learn more please reach out to us on our contact page.
How do you detect leaks without tearing up my walls or floors?
We use professional leak detection equipment including acoustic listening devices and pressure testing tools to pinpoint the exact location of a leak without unnecessary demolition. This non-invasive approach means we only open walls or floors precisely where the leak is — not throughout your entire home. Once we locate the leak accurately we give you a clear upfront quote before any repair work begins. The Environmental Protection Agency estimates that household leaks waste nearly 1 trillion gallons of water annually nationwide — early detection saves both your home and your water bill.
How serious is a slab leak and how fast does it need to be fixed?
Slab leaks are one of the most serious plumbing problems a homeowner can face. Even a slow slab leak can erode your foundation, cause significant structural damage, promote mold and mildew growth, and result in flooring and drywall damage that costs tens of thousands of dollars to repair. If you suspect a slab leak it needs to be addressed immediately — not next week. Call us at 760-626-4204 and we’ll respond fast to locate and repair your slab leak before the damage gets worse.
What causes pipes to leak in a residential home?
The most common causes of residential pipe leaks in North County San Diego include aging or corroded pipes, high water pressure putting stress on joints and fittings, tree root intrusion into underground water lines, poor original installation, shifting soil and foundation movement, and mineral buildup from hard water that weakens pipe walls over time. Older homes with original cast iron or galvanized steel pipes are especially susceptible. If your home is more than 20 years old a leak detection inspection is a smart preventative investment.
Can a small leak really cause that much damage?
Yes — a small leak that goes undetected is often more damaging than a large obvious one because it has time to saturate walls, subfloors, and insulation before anyone notices. Mold can begin growing within 24-48 hours of water exposure and once it spreads remediation becomes extremely costly. The EPA estimates that a single dripping faucet wasting just one drip per second wastes over 3,000 gallons of water per year — and a hidden pipe leak is far worse. Don’t wait to address a suspected leak — call us for a leak detection inspection and we’ll give you a straight answer fast
How much does leak detection and repair cost in North County San Diego?
Cost varies depending on the type and location of the leak — a simple pipe repair is significantly less expensive than a slab leak repair that requires concrete work. We provide free upfront quotes before any work begins — no hidden fees and no surprises. The cost of professional leak detection is almost always far less than the cost of the water damage caused by an undetected leak. Fill out our contact form or call us at 760-626-4204 for a fast honest estimate.
Do you offer emergency leak detection services?
Yes — we respond to residential leak emergencies 24 hours a day 7 days a week throughout North County San Diego. A sudden or uncontrolled leak in your home needs immediate attention — every minute of delay means more water damage and higher repair costs. Call us directly at 760-626-4204 for the fastest response. We also work alongside your homeowners insurance process — documenting the damage and providing detailed invoices to help support your claim.
Service Areas
Proudly Serving North County San Diego & Surrounding Areas
Carlsbad | Oceanside | Vista | San Marcos | Escondido | Encinitas | Fallbrook | Bonsall | Del Mar | Solana Beach | Rancho Santa Fe | San Diego | Temecula | Murrieta | Menifee | Rancho Cucamonga
25+
Years of Experience
Our Legacy
25+ Years of Plumbing Experience
With over 25 years of hands-on plumbing experience, the Alonso family has built a reputation for honest work, fair pricing, and showing up when it matters most. From simple repairs to complex commercial jobs — we’ve seen it all and fixed it all.
- Licensed & Insured in California
- Family Owned & Operated
- Serving North County Since 2000
Got a Plumbing Problem? We're Ready to Help.
Contact us today for fast, reliable service across North County San Diego and all surrounding areas.