Water Line Leak Detection Services in Fontana & Surrounding Areas

Expert detection of underground water line leaks to prevent costly damage
Find My Water Line Leak

Fast Water Line Leak Detection That Saves You Money

Underground water line leaks can waste thousands of gallons and cause expensive property damage to your Fontana, Upland, or Rancho Cucamonga home. AS Plumbing & Mechanical uses advanced leak detection technology to find these hidden problems before they become disasters.

Our skilled technicians locate leaks in main water lines running from the street to your house, as well as branch lines that supply water throughout your property. We use electronic detection equipment, ground microphones, and pressure testing to pinpoint leaks without digging up your entire yard.

Homeowners throughout Corona, Redlands, Glendora, and nearby areas call us when they notice unexplained wet spots in their yard, unusually high water bills, or low water pressure. These signs often indicate water line leaks that need immediate professional attention.

We understand that water line problems are urgent. Our team responds quickly to assess your situation, locate the leak precisely, and recommend the most cost effective repair option. This targeted approach saves you money on both detection and repairs while protecting your landscape and foundation.

24/7 Emergency Support

We provide 24/7 emergency plumbing support to address urgent issues anytime.

Customer Satisfaction

Our top priority is customer satisfaction, ensuring every client is happy with our work.

Affordable Pricing

Our services come at competitive prices without compromising quality.

Quality Assurance

We guarantee quality workmanship and use high-grade materials for all projects.

Most Frequently Asked Questions

How do you find water line leaks without digging up my yard?
We use electronic leak detection equipment, ground microphones, and pressure testing to locate leaks in your water lines. This technology allows us to pinpoint the exact leak location so we only dig where necessary, protecting your landscaping.
How quickly can you detect a water line leak?
Most water line leak detection takes 1 to 3 hours depending on your property size and the complexity of your plumbing system. We typically provide same day service throughout Upland, Corona, and surrounding areas.
What causes water line leaks in Fontana homes?
Common causes include aging pipes, ground shifting, tree root intrusion, corrosion, and extreme temperature changes. Many homes in our area have older galvanized or copper lines that develop leaks over time due to soil conditions and normal wear.
Will my water be shut off during leak detection?
We may need to temporarily shut off your water for pressure testing, but this is usually brief. We'll coordinate with you to minimize any inconvenience and restore your water service as quickly as possible.

Current AS Plumbing Promotions

Full Home Repipe

$1,500 Off

Solve low pressure and water quality issues permanently
Increase property value and prevent future emergencies
Minimally invasive installation protects your home
Get Free Estimate
November 15, 2025
$1,500 discount on complete hot and cold water supply line repipe. Minimum project scope required. Does not include drain lines. Limited time offer.

Leak Detection Special

Free Leak Detection

Expert detection finds hidden leaks fast
Prevent structural damage and mold growth
Clear upfront pricing for any needed repairs
Find My Leak
November 15, 2025
Diagnostic fee only, does not include repairs. Repair quote provided separately. Valid for one leak issue per household during standard business hours.

Water Heater Special

$799 Off

Endless hot water on demand—never run out
Lower utility bills with energy-efficient technology
Space-saving design—no bulky tank needed
Save $799 Now
November 30, 2025
Discount applied to complete tankless installation. Modifications to plumbing, gas, electrical, or venting extra. Customer pays permit fees. Limited time offer.

Drain Cleaning Special

$69

Expert cable cleaning of one drain line
Fast restoration of proper water flow
Service for kitchen, bathroom, or shower drains
Clear Your Drain
December 31, 2025
Valid for one residential drain line with accessible ground-level cleanout. Does not include main sewer lines, hydro-jetting, or toilet removal. Standard business hours only.

Gas Leak Detection

$250

Licensed technicians with advanced detection tools
System-wide pressure test of all gas lines
Detailed upfront estimate for repairs
Protect Your Home
November 30, 2025
Valid for residential properties only. Cannot be combined with other offers. Some restrictions may apply.