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Slab Leak Detection and Repair in San Dimas, CA

What is a Slab Leak?

A slab leak is a plumbing leak in the water supply pipes running beneath your concrete slab—the foundation that supports the rest of your structure. These leaks can be challenging to detect and repair due to the concrete and other materials obstructing access.

If you suspect a plumbing leak but aren’t sure where it’s coming from, give us a call for professional slab leak detection and repair in San Dimas, CA.


How is a Slab Leak Detected?

Detecting a slab leak can be difficult because it's hidden beneath the foundation. However, several signs and methods can help identify one:

Common Signs of a Slab Leak:

  • Increased Water Bills – A sudden spike in your water bill without increased usage could indicate a leak.
  • Running Water Sound – Hearing water running when no fixtures are in use may suggest a hidden leak.
  • Cracks in Floors or Walls – Unexplained cracks can indicate water damage weakening the foundation.
  • Warm Spots on the Floor – If the leak involves hot water, you may feel warm spots underfoot.
  • Mold or Mildew Growth – Excess moisture from a leak can lead to mold buildup.
  • Damp or Musty Odors – Persistent dampness or musty smells may be a sign of water accumulation.

Professional Leak Detection Methods:

  • Water Meter Test – Turn off all water sources and check if the meter continues running.
  • Pressure Testing – Plumbers can check for leaks by monitoring pressure levels in your pipes.
  • Infrared Imaging – Advanced thermal cameras detect temperature changes that indicate water leaks.
  • Electronic Leak Detection – Specialized equipment listens for the sound of escaping water beneath the slab.

If you notice any of these signs, contact us for a thorough slab leak inspection.


How Do Slab Leaks Occur?

Slab leaks can happen due to various reasons, including:

  • Pipe Corrosion – Older pipes may develop cracks due to corrosion over time.
  • Poor Installation – Faulty installation can lead to premature pipe failures.
  • Soil Shifting – Ground movement can put pressure on pipes, causing leaks.
  • Water Pressure Issues – High water pressure can weaken pipes and lead to leaks.

Regardless of the cause, a slab leak can weaken your foundation, cause flooring damage, and encourage mold growth.


Our Slab Leak Detection & Repair Process

When you contact us for slab leak detection and repair in San Dimas, CA, our process includes:

  • Inspection & Leak Detection – We locate the leak using state-of-the-art technology.
  • Assessment & Planning – We determine the best repair method based on the severity of the leak.
  • Accessing the Leak – If needed, we carefully excavate a section of the slab to reach the affected pipe.
  • Pipe Repair or Replacement – We fix or replace damaged pipes to prevent future issues.
  • Sealing & Restoration – Once the repair is complete, we seal the slab to restore its integrity.

We guide you through the entire process and ensure top-quality repairs. Financing options are available to make the process more affordable.

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Wesley E.
The gentleman who answered the phone at 7 am was so friendly, quick, and efficient in getting me on the books. He had a technician over to check out the leak under my sink within 5 hours and accommodated my work schedule.
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Working with Alpine has been amazing. They were very responsive and the tech, Tom was awesome and very easy to talk to. They were very professional and did not push any additional unnecessary work, as some would. I will work with them again!
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David is the one who helped us replace the water pressure regulator. David was really professional and didn’t try to scare us with some serious outcome if we don’t do this do that. David also replaced two fill valves for us as a courtesy.
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The easiest plumbing repair call I have ever had. I messaged Alpine on Yelp and within 1 minute I got a response. I was lucky enough that their technician Matt was finishing up a job and was around my neighborhood.
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Outstanding service! Quick response. Checked our commercial water heater within a couple of hours! Vincent and his coworker were informative and professional! Wish I could give more stars!!
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Highly recommend Alpine Plumbing. Michael performed routine maintenance on my water heater and discovered it had been improperly installed. He was able to correct most of the problem in just a few minutes.
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