Leak Detection & Repair in San Antonio

San Antonio’s Slab Foundations Demand Precise Leak Detection. We Deliver It.

Hidden leaks rarely announce themselves until the damage is done. Aramendia Plumbing, Heating and Air has been finding and fixing those leaks for San Antonio homeowners since 1989, using electronic leak detectors, thermal imaging cameras, and acoustic listening devices to locate the problem without tearing into walls or excavating your yard. Our technicians are licensed, bonded, and insured, and every repair is backed by the Service Experts Guarantee.

The EPA estimates the average home loses around 10,000 gallons of water each year to undetected leaks. A precise diagnosis can stop that waste before it becomes a foundation problem, mold growth, or a repair bill far larger than the leak itself.

Suspect a hidden leak? Call our San Antonio team at (210) 405-8172 for Leak Detection and Repair with upfront pricing and no hidden fees.

ACE-Certified Technicians, a Guarantee-Backed Standard

Our ACE-certified technicians install and service plumbing systems to manufacturer specifications, which matters when diagnosing a pinhole leak in a supply line or a slab leak beneath a concrete foundation. That certification, combined with the Service Experts Guarantee, means you get a clear standard of workmanship on every job. You also receive a detailed, upfront quote before any work begins.

San Antonio’s slab foundations shift over time, and our plumbers account for that movement when they diagnose and plan repairs. Understanding how a home is built changes how a leak gets read and how the fix holds up.

How We Locate Leaks Without Demolition

Electronic leak detectors, thermal imaging cameras, and acoustic listening devices let our technicians trace a leak to its source behind walls, under slabs, and inside ceilings without destructive digging or wall demolition. Thermal imaging reveals temperature changes caused by escaping water. Acoustic equipment picks up the sound signature of water moving through a breach, even under several inches of concrete. Once the source is confirmed, we repair it using quality materials and proven techniques, backed by the Service Experts Guarantee.

Warning Signs of a Hidden Leak

Any one of these symptoms warrants a closer look:

• Unexplained water bill increases despite normal usage patterns
• Damp or discolored spots on walls, ceilings, or flooring with no obvious cause
• Musty odors suggesting hidden moisture or mold growth in wall cavities
• Running water sounds when all fixtures and appliances are off
• Warm spots on floors, which can indicate a hot water line leak beneath a slab
• Gradually declining water pressure throughout the home
• Foundation settling or new cracks that may point to an underground line failure

Why San Antonio Homes Are Prone to Hidden Leaks

Bexar County’s soil is classified largely as vertisols, expansive clay that shrinks during dry periods and swells when it rains. That cycle puts continuous pressure on under-slab plumbing, and slab leak activity can rise during dry months as the soil contracts and shifts pipe positions. Buried pipes rarely settle into a stable season here.

Hard water adds a second stressor. Mineral buildup inside pipes accelerates corrosion and reduces flow over time, shortening the life of water heaters and increasing the likelihood of pinhole leaks in supply lines. Older homes built with copper, galvanized steel, or polybutylene pipe face additional corrosion risk as those materials age.

Protect Your Home Before the Next Leak

Our Maintenance+ Membership includes annual whole-house plumbing inspections designed to catch developing problems before they become emergencies. Members also receive priority scheduling when a leak does occur, along with exclusive discounts on repair services.

For a leak you’ve already noticed, or one you suspect but can’t locate, call Aramendia Plumbing, Heating and Air at (210) 405-8172. We can find it, explain your options, and repair it the right way.