(888) 925-1996
Clogged Toilet Repair · Ontario-Wide

Need Leak
Detection Service? Call Us Today.

Hidden leaks can waste water and damage nearby surfaces. Delta Plumbers provides leak detection services for homes, rentals, and commercial properties across Ontario. Our licensed plumbers locate the source of the leak and explain the next step.

47min Avg. Dispatch
365 Emergency Line
1 yr Warranty
Delta Plumbers technician ready to clear a clogged toilet
Rated 4.9★
Leak Detection Experts Professional leak detection for fast and accurate results.
24/7 Emergency Service
Licensed & Insured
Why Delta Plumbers

We Provide Same Day
Plumber

Choosing the right leak detection plumber helps identify the source of the leak and explain the best repair options. Our team performs careful inspections and provides clear recommendations.

Get a Free Estimate
01

Fully Licensed

Experienced plumbers equipped to locate hidden water leaks in residential and commercial properties.

02

Complete Warranty

Every leak detection service is completed with careful attention to help locate hidden leaks accurately and efficiently.

03

Locally Owned

Providing professional leak detection services for homes, rental properties, commercial buildings, offices, and businesses across Ontario.

04

Same-Day Service

Prompt leak detection service to help locate hidden water leaks before they cause further damage.

Certification
Certification
Certification
Certification
Certification
Certification
Certification
Fast & no-obligation

Get a Job Estimate

Get clear answers before a hidden leak leads to wider damage or expensive repairs.

Prefer to talk? (888) 925-1996

Verified Google Reviews

What Ontario Customers
Say About Delta Plumbers

4.9
2,500+ reviews on Google & HomeStars

Read what customers say about our scheduling, communication, and plumbing work.

Our shower drain had been giving us trouble for weeks but Ali from Delta Plumbers fixed it in no time. Excellent customer service.

Jonah D. Mar 22, 2025 · Mississauga

Very happy with my tankless water heater installation. Quick and hassle-free process — would recommend.

Kaiya Y. Mar 21, 2025 · Toronto

Money was tight and Peter gave me a few budget alternatives. He saved the day — would recommend to anyone.

Tamin G. Jan 27, 2025 · Brampton

Our shower drain had been giving us trouble for weeks but Ali from Delta Plumbers fixed it in no time. Excellent customer service.

Jonah D. Mar 22, 2025 · Mississauga

Very happy with my tankless water heater installation. Quick and hassle-free process — would recommend.

Kaiya Y. Mar 21, 2025 · Toronto

Money was tight and Peter gave me a few budget alternatives. He saved the day — would recommend to anyone.

Tamin G. Jan 27, 2025 · Brampton

Our shower drain had been giving us trouble for weeks but Ali from Delta Plumbers fixed it in no time. Excellent customer service.

Jonah D. Mar 22, 2025 · Mississauga

Very happy with my tankless water heater installation. Quick and hassle-free process — would recommend.

Kaiya Y. Mar 21, 2025 · Toronto

Money was tight and Peter gave me a few budget alternatives. He saved the day — would recommend to anyone.

Tamin G. Jan 27, 2025 · Brampton

Called Delta on a Sunday — they were the only company that came out within an hour. Dustin was polite and quick.

Shixgen H. Mar 22, 2025 · Etobicoke

Super fast response time — arrived early. Domenic was friendly, efficient, and even a pet magnet. Will call them again.

Spencer H-C. Oct 29, 2024 · Vaughan

Provided awesome service. Very professional, courteous, and respectful — first time calling a plumber and I'm glad I did.

Inder Singh Dec 3, 2024 · Mississauga

My water boiler had sprung a leak and they replaced the pipe the same day. Grateful for such prompt service.

Trending B. Nov 14, 2024 · Toronto

Called Delta on a Sunday — they were the only company that came out within an hour. Dustin was polite and quick.

Shixgen H. Mar 22, 2025 · Etobicoke

Super fast response time — arrived early. Domenic was friendly, efficient, and even a pet magnet. Will call them again.

Spencer H-C. Oct 29, 2024 · Vaughan

Provided awesome service. Very professional, courteous, and respectful — first time calling a plumber and I'm glad I did.

Inder Singh Dec 3, 2024 · Mississauga

My water boiler had sprung a leak and they replaced the pipe the same day. Grateful for such prompt service.

Trending B. Nov 14, 2024 · Toronto

Called Delta on a Sunday — they were the only company that came out within an hour. Dustin was polite and quick.

Shixgen H. Mar 22, 2025 · Etobicoke

Super fast response time — arrived early. Domenic was friendly, efficient, and even a pet magnet. Will call them again.

Spencer H-C. Oct 29, 2024 · Vaughan

Provided awesome service. Very professional, courteous, and respectful — first time calling a plumber and I'm glad I did.

Inder Singh Dec 3, 2024 · Mississauga

My water boiler had sprung a leak and they replaced the pipe the same day. Grateful for such prompt service.

Trending B. Nov 14, 2024 · Toronto
NOTICE WATER STAINS OR WET SPOTS?

Find the Cause Before
Repairs Become More Expensive.

Book water leak detection when moisture appears without a clear source.

PROFESSIONAL LEAK DETECTION SERVICES

Leak Detection Services That Help Find the Source

Delta plumber clearing a clogged toilet
Licensed Delta technicians clear clogs at the source.

A hidden water leak may cause stains, damp areas, or the sound of running water. Professional leak detection services help narrow down the problem before repair work begins.

We inspect exposed and concealed plumbing lines. We can also assess signs linked to underground leaks or slab leaks.

Some leaks form behind walls, under floors, inside ceilings, or below the ground. These areas cannot be checked during a visual inspection. A thorough assessment helps identify which part of the plumbing system needs closer attention.

Water may travel away from the leak, making the source harder to find. A complete inspection helps identify leaks throughout the plumbing system. It also checks water supply lines and hidden pipes that cannot be seen during a visual inspection.

RECOGNIZE THE EARLY WARNING SIGNS

What Can Point to a Hidden Leak?

The changes you notice help us decide where to inspect and test first.

#1 Most Common

Unexplained Water Use

A rising bill or moving water meter may show that water is escaping.

Frequently Seen

Water Stains and Damp Areas

Marks on ceilings, soft flooring, or wet spots may point to a concealed pipe.

We'll Diagnose It

Pressure and Sound Changes

Low pressure or the sound of running water can help us detect a leak.

A SMALL LEAK CAN CAUSE WIDER DAMAGE

Why Early Leak Detection Matters

Water damage from an untreated plumbing failure

Water can spread beyond the source and damage drywall, flooring, cabinets, or insulation. Some leaks may also raise water use or weaken nearby materials.

Early pipe leak detection can help reduce structural damage and lower the risk of expensive repairs. Underground leaks and slab leaks may also create wet soil, warm floor areas, or unexplained pressure loss.

As the leak continues, water may spread beyond the original area and reach other parts of the property. This can affect areas that were dry at first and increase the amount of repair work needed once the leak is located.

Responding to a hidden water leak sooner can help keep the problem contained to a smaller area. A timely inspection provides a clearer understanding of the affected section before the condition becomes more difficult to manage.

Our Process

HOW DELTA PLUMBERS LOCATE THE SOURCE OF THE LEAK

We review the warning signs, inspect the plumbing system, and choose a testing method that suits the affected area.

  1. 1

    Review the Problem

    We ask where the signs appeared and when you first noticed them.

  2. 2

    Inspect the Area

    We check visible pipes, fixtures, nearby surfaces, and water lines for signs of moisture.

  3. 3

    Test the Plumbing

    We may use moisture readings, listening equipment, cameras, or a pressure test to narrow down the leak.

  4. 4

    Explain the Findings

    We identify the suspected source of the leak and explain the next repair options.

URGENT HELP FOR ACTIVE WATER LEAKS

Emergency Leak Detection for Active Water Leaks

Suspect a hidden water leak? If you notice unexplained water stains, damp areas, or a sudden increase in your water bill, contact Delta Plumbers to schedule a professional leak detection service.

Delta technician with emergency drain-clearing equipment

A burst pipe or sudden hidden water leak can damage several areas in a short time. Turn off the nearest valve or main water supply when you can do so safely.

Call for emergency leak detection when water appears without warning, pressure drops suddenly, or moisture spreads through a wall, floor, or ceiling. A focused inspection can help locate the source and protect your home from further damage.

Fast action can help limit the amount of water that reaches nearby rooms and plumbing fixtures. Once the leak is located, your plumber explains where the leak was found, checks the surrounding area, and recommends the next step.

Don't wait — it only gets worse

Got a plumbing problem?
We can be there today.

Searching for Plumbing Leak Detection? Delta Plumbers checks hidden leaks, burst pipes, and unexplained water loss for homes and businesses across Ontario.

  • Same-day & 24/7 emergency service across Ontario
  • Upfront flat-rate pricing — no after-hours surprises
  • Licensed & insured, with a one-year workmanship warranty
No Surprises

Clear Pricing and Easy Scheduling

We keep the money part simple and the booking part painless.

  1. Step 1

    Tell us what's wrong

    Contact Delta Plumbers by phone or complete our online form. We'll discuss the signs of the suspected leak and arrange a convenient appointment.

  2. Step 2

    Get a flat-rate quote

    Your plumber inspects the plumbing system, locates the source of the suspected leak, and explains the findings. You'll receive a clear estimate before the service begins.

  3. Step 3

    We clear it & clean up

    The leak detection is completed, the inspection area is left clean, and your plumber explains the findings and recommended next steps. You pay only the approved price.

WHAT HAPPENS AFTER THE LEAK IS FOUND?

The Right Solution Depends on What We Find

Accurate leak detection and repair starts with a clear location. The condition of the pipe, fitting, or water line will guide the next step.

A plumber may repair one damaged section when the rest of the pipe remains sound.

A cracked or loose fitting may need replacement to restore a secure connection.

A hidden leak may require a small opening near the confirmed source.

Underground leak detection can help limit digging by narrowing down the damaged area.

Several leaks, heavy corrosion, or older pipes may make wider replacement the better long-term choice.

WATCH FOR SMALL CHANGES IN YOUR PLUMBING

Simple Checks Can Help You Find Leaks Earlier

Delta technician servicing plumbing under a kitchen sink

Leaks often show small warning signs before they cause wider damage. A few simple checks can help protect your home.

  • Check Under Fixtures: Look below sinks, toilets, and appliances for moisture or water stains.
  • Watch Your Water Bill: A sudden increase may point to a leak when your normal use stays the same.
  • Inspect Visible Pipes: Check pipe joints and exposed water lines for drops, rust, or wet marks.
  • Listen When Water Is Off: The sound of running water may point to a hidden water leak.
  • Notice Pressure Changes: A sudden or steady pressure drop may show that water is escaping.
  • Check Walls and Floors: Soft surfaces, peeling paint, or damp areas may require further testing.

Do not wait for clear damage to appear before arranging an inspection. Professional leak detection services can confirm the source of the problem and help you address it before additional areas require attention

EARLY DETECTION CAN LIMIT THE DAMAGE

Why Early Leak Detection Makes a Difference

Delta plumber repairing an excavated sewer line

Water may travel far from the source before it becomes visible. Delayed service can lead to damaged finishes, structural damage, and expensive repairs.

Early hidden water leak detection helps narrow down the affected area. It also supports a more focused repair and may reduce the amount of material that needs to be opened.

Arrange professional leak detection while the plumbing system is still operating normally. This gives the plumber clearer information about the affected pipe and helps confirm the source before the problem becomes harder to assess.

When you address the problem early, it's easier to schedule service at a convenient time. It can also help prevent the leak from becoming a more urgent plumbing problem.

THE RIGHT REPAIR STARTS WITH ACCURATE LEAK DETECTION

Find the Leak Before Planning the Repair

Clear findings help your plumber choose a repair that suits the damaged area. This can limit guesswork, reduce water loss, and support better long-term results.

Finding the leak early may reduce damage to drywall, flooring, cabinets, and other finishes.

A repaired hidden leak can stop water from escaping and help control future utility costs.

Knowing the source helps determine whether the problem involves a pipe, fitting, connection, or underground water line.

Professional leak detection services provide the details needed to plan focused repair work. Once the source is confirmed, your plumber can explain the required access, repair options, and steps that may help prevent further damage.

Plumbing Help Across Ontario

Trusted in 36+ Ontario cities
— and counting.

Delta Plumbers provides water leak detection for homes, rental properties, and commercial buildings across Ontario. Our licensed plumbers inspect visible pipes, concealed plumbing, slab leaks, and underground leaks.

Service area

Toronto, ON

Fast Residential and Commercial Plumbing Services
For Toronto
And nearby areas.
(888) 925-1996 Request Service
Dispatch hours 24 / 7 · 365
FAQ

Frequently Asked Questions

Cost depends on the leak location, access, testing method, and time needed to locate the source.

Professional leak detection uses non-invasive methods whenever possible to locate the leak while limiting unnecessary damage to walls, floors, or other finished surfaces.

Yes. Testing can help narrow down leaks beneath concrete before access or repair work begins.

A plumber may inspect the area and use moisture readings, listening tools, cameras, or a pressure test.

Water stains, wet spots, rising bills, low pressure, and running-water sounds may point to a hidden leak.

Underground leak detection can help locate damaged water lines and reduce unnecessary digging.

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