(619) 273-5851
Slab Leak Repair

Slab Leak Repair in San Diego, CA

Fast, Reliable & Safe Electrical Repair Services (619) 273-5851

Trust Mauzy to Get It Fixed Fast and Right

When something’s off in your home’s plumbing, you usually know it. A dripping faucet? Easy fix. A clogged drain? Annoying, but manageable.

But slab leaks? Now those are sneaky—and they can turn into a serious problem fast.

At Mauzy, we’ve been helping San Diego homeowners handle these tricky plumbing issues for over 50 years. If you suspect a slab leak, don’t wait. It’s not just water under the house—it’s a silent threat to your foundation, your budget, and your peace of mind. Luckily, you’ve got us on your side.

Let’s talk about what slab leaks are, how to spot them, and why you’ll want a seasoned San Diego plumbing team like Mauzy’s to handle repairs the right way.

What Is a Slab Leak?

Let’s start with the basics.

A slab leak happens when a water pipe located beneath the concrete foundation (a.k.a. “the slab”) of your home springs a leak. These pipes can be part of your hot water or cold water system, and when one fails, water seeps into the soil or the concrete itself.

Sounds like a small issue, right? Think again.

That hidden leak can cause:

  • Cracks in your foundation
  • Soaring water bills
  • Mold and mildew growth
  • Buckled floors
  • Structural damage to your home

Left untreated, slab leaks are one of the most expensive plumbing disasters a homeowner can face.

A slab leak in a basement.
(619) 273-5851

What Causes a Slab Leak?

San Diego is a beautiful place to live, but our geology and aging housing stock can be a perfect storm for slab leaks. Here are some common culprits:

Shifting Soil: The earth around your home expands and contracts over time, especially during dry spells or after heavy rain. That movement puts stress on underground pipes, which can eventually crack or break.

Corrosion: Older homes often have copper pipes, which can corrode over time—especially if the water supply is slightly acidic or contains minerals that speed up deterioration.

Poor Installation: If the plumbing was installed poorly or the pipes were bent too sharply, they may be more prone to wear and tear.

Water Pressure Issues: High pressure puts added stress on pipes, wearing them out faster.

Abrasion: Pipes can rub against concrete or other materials during normal thermal expansion and contraction. Over time, this can wear them down.

No matter the cause, the result is the same: water flowing where it shouldn’t be, and damage happening before you even notice it.

How to Spot a Slab Leak

Because these leaks happen under your home’s concrete slab, they’re not easy to see. But they do leave clues—some subtle, some glaring. Here’s what to watch for:

  • Sudden spike in your water bill with no obvious reason
  • Warm spots on the floor, especially if they weren’t there before
  • Mildew or mold appearing out of nowhere
  • Low water pressure throughout the house
  • Sound of running water when everything’s turned off
  • Cracks in the foundation or walls
  • Unusual wet or damp spots in flooring or carpets

If you’re nodding your head to any of those signs, it’s time to bring in the pros. Fast action makes all the difference when it comes to slab leak repair.

Mauzy’s Slab Leak Repair Services in San Diego

At Mauzy, we’ve handled hundreds of slab leaks across the county—from beachside homes to inland neighborhoods. We know the signs, the soil, and the systems. And we’ve got the tools and expertise to do the job right.

Here’s how our process works:

1. Leak Detection

We start with precise, non-invasive leak detection. Using advanced equipment like electronic listening devices and infrared thermography, we can pinpoint the exact location of the leak without tearing up your floor.

No guesswork. No unnecessary demolition. Just expert diagnostics.

2. Diagnosis and Options

Once we find the leak, we’ll walk you through your options. Depending on the size, location, and condition of your plumbing system, we may recommend:

  • Spot repair (fixing just the problem area)
  • Pipe rerouting (rerouting pipes through the walls or ceiling to avoid future slab issues)
  • Epoxy pipe coating (lining the interior of pipes when conditions allow)
  • Full repipe (if multiple areas are failing or the system is aging)

We’ll explain the pros and cons of each approach and help you choose what works best for your home and budget.

3. Expert Repair

This is where we shine. Whether it’s a small repair or a full reroute, our certified plumbing team handles the job with precision and care.

We’ll:

  • Carefully access the affected area with as little disruption as possible
  • Repair or reroute the plumbing using high-quality materials
  • Test everything thoroughly before closing up
  • Clean up our work area so your home feels like home again

You can rest easy knowing your home is in good hands.

Why San Diego Homeowners Trust Mauzy

We’ve built our reputation over three generations of plumbing service in San Diego. Here’s what makes Mauzy different:

  • Family-Owned, Local Focus: We’re your neighbors, not a national chain.
  • Straightforward Pricing: No hidden fees. Just honest work at fair prices.
  • Top-Notch Tools & Techniques: We use the latest leak detection and plumbing repair technology.
  • Emergency Service: Slab leak can’t wait? We’re on call 24/7.
  • Warrantied Workmanship: We stand behind everything we do.

We understand how stressful a slab leak can be, and we do everything in our power to make the process as smooth and worry-free as possible.

Preventing Future Slab Leaks

Once you’ve had a slab leak, prevention becomes priority number one. Here are a few smart tips:

  • Install a pressure-reducing valve if your water pressure is too high.
  • Consider a whole-home repipe if your system is aging or showing signs of corrosion.
  • Schedule annual plumbing inspections with Mauzy to catch small issues early.
  • Be mindful of what goes down the drain—avoid harsh chemicals that can damage pipes.

Prevention is always cheaper than repair, and we’re here to help you stay ahead of the game.

What If You Have to Go Through Insurance?

Good question. In many cases, homeowners insurance will cover the damage caused by a slab leak—but not necessarily the cost to fix the plumbing itself.

We’ll help you:

  • Document the issue thoroughly
  • Work with adjusters when needed
  • Provide detailed estimates and reports

You’re not alone in this. We’re happy to help you navigate the claims process and make sure you get the coverage you’re entitled to.

Slab Leaks FAQ – Let’s Answer Your Questions!

  • Can a Slab Leak Cause Health Problems If Neglected?

    Can a Slab Leak Cause Health Problems If Neglected?

    Yes, a slab leak can contribute to significant health risks over time. Moisture trapped beneath your flooring or in walls can lead to mold and mildew growth, which may not always be visible. These fungi release spores into the air that can aggravate allergies and respiratory issues—especially for children, the elderly, or anyone with asthma or a weakened immune system. In severe cases, mold exposure can cause chronic coughing, headaches, or even more serious illnesses. That’s why prompt detection and repair of slab leaks isn’t just about protecting your home—it’s also about safeguarding your family’s health.

  • How Long Does It Take to Repair a Slab Leak?

    How Long Does It Take to Repair a Slab Leak?

    The timeline for slab leak repair depends on several factors, including the leak’s location, the extent of the damage, and the chosen repair method. A straightforward spot repair might be completed in a single day. However, rerouting plumbing or performing a full repipe could take two to four days, especially if multiple systems are affected. Mauzy’s team always aims to minimize downtime and disruption. We’ll provide a clear timeline before starting any work so you know exactly what to expect and can plan accordingly.

  • Will the Slab Leak Detection Procedure Damage My Floors or House Foundation?

    Will the Slab Leak Detection Procedure Damage My Floors or House Foundation?

    Modern slab leak detection is typically non-invasive and won’t require tearing up floors just to locate the problem. At Mauzy, we use advanced tools like acoustic sensors, infrared cameras, and thermal imaging to find the leak with precision. These technologies allow us to detect subtle changes in temperature, sound, and moisture without drilling or demolition. If access is needed, we’ll use minimal-impact methods to reach the affected area only after the leak has been pinpointed—reducing mess, cost, and time.

  • Are Slab Leaks More Common in Older Homes?

    Are Slab Leaks More Common in Older Homes?

    Yes, slab leaks tend to occur more frequently in older homes. Properties built several decades ago often have copper or galvanized steel pipes, which are more prone to corrosion and wear. Over time, soil movement, temperature changes, and water chemistry can weaken these aging pipes. In addition, older construction techniques may not have accounted for today’s plumbing best practices, increasing the likelihood of hidden vulnerabilities. If your home is more than 30 years old and hasn’t had a plumbing upgrade, it’s wise to schedule regular inspections.

  • What Is the Difference Between a Slab Leak and a Regular Plumbing Leak?

    What Is the Difference Between a Slab Leak and a Regular Plumbing Leak?

    A regular water leak typically occurs in visible plumbing—like under a sink or behind a wall—making it easier to detect and fix. A slab leak, on the other hand, happens beneath the concrete foundation of your home, where pipes are harder to access. This makes slab leaks more difficult to detect, more damaging over time, and more complex (and costly) to repair. Because they can affect your home’s structure, slab leaks are considered one of the most serious types of plumbing issues and should be addressed as quickly as possible.

Don’t Wait—Call Mauzy Today For All Your Plumbing Leak Repair Needs!

If you’re seeing signs of a slab leak, don’t ignore them. These aren’t the kind of problems that work themselves out. The longer you wait, the more damage it can cause—and the more expensive the fix becomes.

Our team is ready to jump into action with the tools, training, and experience to get your plumbing (and your peace of mind) back on track.

Call us today at (619) 273-5851 to schedule an appointment!

(619) 273-5851

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Reviews

Here’s What Others Are Saying About Us

5

Evan Gaines professionalism and cooperative manner carried the day during his inspection effort. Highly knowledgeable and willing to educate as he debriefed his work, he made the overall plumbing inspection highly palatable. Kudos to Mauzy for housing a superb staff!

5

Jake was polite and nice. He worked in pouring rain and got it done quickly. I appreciate his worth ethic and the fact that it was running well before he left. I would definitely recommend Mauzy to others

5

Robert was polite, answered my questions. He went over some options for repairs.

5

This Five Star review is only for Mauzy technician, Nathan Benge, who did the diagnostic on my Lenox combo system of heat pump and gas furnace on December 30, 2025.

I had a combo system of a heat pump and a furnace, Signature Collection, which were installed last year by Mauzy. For those of you don’t know much about Lennox models, Signature Collection is the top-of-the-line of the Lennox brand and yes, they are expensive and did have few issues right after the installation!

Last cold Sunday morning, 12/28/2025, my Lennox thermostat S40 stopped working. There was no power to the unit! I contacted Mauzy on Monday and got an appointment with a technician named Nathan Benge on Tuesday morning to visit my home and to diagnose the problem. I’d like to mention the following positive notes from the time the Nathan on the way to my home to the time the he finished the job:

1/ It’s very helpful to me receiving the status update when the Nathan was on the way and tracking information (including the estimate time of the arrival) of Nathan’s vehicle.

2/ After listening to me about the past and current problems of the installed Lenox unit, Nathan verified no power to the Lenox thermostat S40. He, then, went up into the attic of my home, unplugged the unit main power cord from the outlet, and started checking on the connection of the electrical wires inside the unit. He found one of the wires being loosen from the undersized winged wire connectors (past workmanship?). Nathan reconnected the wires with a larger size winged wire connector (see the attached photo with red arrows) and plugged the unit main power cord back to the outlet. The unit was powered on and the thermostat S-40 was also back on!

3/ At my request, Nathan also did the following works:

(a) Re-checked the internal wiring to the circuit board in the blower unit (there were 4 exposed stripped copper wires at the connection to the board). He confirmed they’re O.K.

(b) Did a visual check on the flame in the furnace.

(c) Found a temporary solution to reduce the vibration noise from the heat pump by using the electrical wire jacket to separate the plastic component from the metal frame of the heat pump (see the attached photo with red circles).

(d) Researched and explained the message “Ambient Lockout”, which showed under the “Status” tab of the Lennox app. He explained how the heat pump and the furnace operate when the “Ambient Lockout” message showing up in the app. Noted that I had asked the same questions to previous 5 Mauzy technicians, managers, local Lennox sale representative, and calling Lennox Customer Support. No one was able to answer or explain to me the meaning of the message “Ambient Lockout”! Even worse, all I got back from Lennox Customer Support were two case numbers and no follow-up from Lennox Technical Support. I was also told last March (2025) that Lennox Technician covering southern California region (from Bakersfield to the border) would visit my home, checked out the installed unit, and addressed some of the issues that I had with this top-of-the-line Signature Collection unit, but they’ve never came!

In conclusion, Nathan Benge did a great job!

5

Carter is very knowledgeable, he is certainly an asset when it comes to customer service!

5

Joshua from Mauzy Plumbing came in to fix our plumbing issue. He was very detailed explaining the repair and cost associated with repairs. He did an excellent job with fixing the issue and checking everything and cleaning after him self. I really appreciated his professionalism and attention to detail. Although the service is not cheap, knowing that everything is done properly is very comforting. I would recommend him and his services to anyone who is looking for reliable plumbing experience.

5

Robert was wonderful ! He is so very trustworthy. He calmly explained what was wrong and all the options open to me. He didn’t hard sell anything but worked with me. He is very neat. When he was finished he patiently explained what he did and how the system worked.

5

Did a great job cleaning the drain of my bathtub. Abraham was very nice and took care of everything and explained everything very well. A good service to use in the future.

5

Working with Mauzy has been a breeze. Had some issues with our system and they sent a technician out as soon as they could. Wound up working with Mr. William Carter who was very knowledgeable and did a fantastic job. I couldn’t be more pleased with the service he provided.

5

Christian rewired furnace and enabled my new thermostat to work perfectly. Great customer service.

5

Your service representative was very polite and professional while dealing with me. Thank you for good servjce.

5

Informative and detailed analysis of our HVAC system by technician Mike Mitman

5

Christain was amazing. Efficient and honest.

5

Excellent service. Joe answered all our questions and he was professional and knowledgeable.

5

I had a new heater system installed in my house about two weeks ago And since that time I was experiencing A noise that sounded like a bass Or subwoofer playing. It happened every time the heater came on. A technician came out and his name was Mr. William Carter. I have to commend him on his knowledge of the heater systems because he knew exactly what I was talking about. He called it a “Whoomp whoomp“ sound. And I replied, “Yes, that’s exactly what it sounds like“. He ran some tests, Made some adjustments with the gas flow, Explained to me exactly what was going on, Corrected the issue and ran more test until the “Whoomp whoomp“ Sound no longer came on. I cannot explain how thankful I am for the time that he took to explain everything to me. He provided great customer service because he showed me he cared by displaying patience with my questions. He went above and beyond by explaining to me how the thermostat worked and I am so grateful he was the one that came To fix the issue. Thank you, Mr. William Carter.

5

I highly recommend Mike Ward at Mauzy! Mike took time out of his busy schedule to assist us with a clogged drain. He was very friendly, efficient, knowledgeable and even cleaned up after himself. We will definitely call on Mike at Mauzy again for any and all heating, plumbing and electrical needs!

5

Christian was awesome. Professional, knowledgeable, technically skilled, he did a great job.

5

Jushua was the best!!so knowledgeable and friendly .. an asset to your company!!!

5

Nathan inspected my old wall heater. All is well. Technician was polite and respectful. Great rep for Mauzy.

5

knowledgeable, thorough; reassuring; no sales pressure

appreciated his efforts

5

Alex and Chris from Mauzy did a fantastic job installing my new HVAC. They were both polite and efficient working together as a team. Thank you for the positive experience. Big shout out to Edwin in making it happen. Cheers, Vince Sanchez

5

Was provided amazing and excellent customer service. Was notified of anything that needed to be cleaned or maintained.Kylin Was very professional

5

Great service.

5

Just had Evan G from Mauzy do an evaluation on the plumbing on my home. The evaluation could not have been more complete.
Every bit of the plumbing was checked. Yes everything was good to go but if there was an issue Evan with his knowledge would not have missed a thing. At least 2 hours to go through all the plumbing. I recommend every home owner to get the same service. It will save on the long run and if there are minor issues you will be made aware. Evan G was terrific.

5

Kory was great and very thorough , thank you

5

Mouzy is hands above any other plumbing/electrical A/C, firm I’ve used in the past, and since I am 80 years old, I’ve used a heck of a lot of them. They are fair, polite, and knowledgeable. I have no idea what More can think of to describe them.
You’ll be happy with them!

5

James Logsdon was our Tech. He is very professional and lets you know what he will be doing. He kept me informed of everything. He was amazing and I trust him. Best Tech ever.

5

Darren was very through in completing the service maintenance for my heating system. He took numerous photos and explained everything in detail. Thank You Darren!

5

Brandon was our technician, and was great about communicating prior to his arrival with an estimated time to be at our home. He was very pleasant, and explained what services he would be providing. During his visit, he was respectful of our property and kept us informed on progress of the work provided. He left things in order and provided a final update on his analysis of our plumbing. Very impressive service.

5

James is an excellent technician! He sourced the problem and handled the follow up in a professional manner. He clearly explained the issues with our heater. We appreciate his knowledge and courtesy!!! Our heater still under warranty for the part that had failed so no payment was due at this time.

5

Joe Annello was extremely thorough and explained his findings and answered all my questions. He was very professional and on time.

5

Both Darren and Joshua were kind?respectful, informative and gave many options to choose from!

5

Christian is knowledgeable of the job and very professional

5

Joshua was professional and courteous. His detailed description of filtration systems, along with inspection and recommendations for correction of my failed in line water filter were a sell point for the filter I subsequently purchased from Mauzy plumbing. He provided above and beyond service, tightening fixtures and replacing piping and components at no extra charge. He demonstrated how water quality reflected filter performance, which turned out to be what he predicted it would. I was more than satisfied with Joshua’s informed and thorough
service. Thank you.

5

Kory was professional, proactive, courteous, and answered all of our questions regarding heating and air conditioning maintenance.

5

Prompt and well informed. Thank you.

5

Excellent service. Was able to get same day service. The technician, Kory went above and beyond to get my heater repaired in a timely manner. He was very personable and took the time to explain the details of the problem and the repair.

5

Got great service today from Evan G. Yearly inspection on our water heater and routine check on pluming in the house. Fast reliable service and recommendations on future and preventive maintenance. Thank you Evan and Mauzy for great service.

5

Kory was very professional and answered all our questions.

5

Excellent service!

5

I should’ve called Mauzy first! Prior to the call to Mauzy I had 2 companies come out to help me with a plumbing issue I had. Let’s just say it got worse rather than better. Finally, Wilber, an exceptional young man to say the least, came to the rescue! Knowledgeable, efficient, and walked me through every step of the process. Pinpointed the problem and had my plumbing issue resolved. Thank you Mauzy for having exceptional employees that know what they are doing! Will continue my services with Mauzy.

5

Tommy and Alex were totally awesome.

5

Technician Michael Mitman was very professional and helpful. More importantly, he got the job done in an expeditious manner.

5

Mauzy was very professional and did a great job. Especially appreciated Chris and Alejandro’s work.

5

On Time, very friendly and efficient. James is very easy to deal with

5

Thanks Robert for your great service.

5

Just got my new furnace installed. My technicians Chris and Alejandro were quick with removing the old one and installing the new one. Both were very helpful to help me with my thermostats and explain every part of the process with the new furnace. Im completely satisfied with their service.

5

James was very knowledgeable. He fixed the issue 3 others couldn’t

5

Darren Murphy is a super star and a great Ambassador. Keeps the customer informed as to what’s happening. Rates T least 11 stars

5

I highly recommend Mauzy! Their technician Wilber did an amazing job! He was professional from the moment he arrived. He was respectful, knowledgeable and very thorough. He quickly identified the issue and took the time to explain my options clearly. He made sure everything was cleaned up and working perfectly before leaving which made the whole process smooth and stress-free. Definitely recommend this company and highly suggest you request Wilber!

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