Open now · Covina Leak Detection

Hidden leak?
We'll find it fast.

A spiking water bill, warm floors or the sound of running water usually means a leak you can't see. We pinpoint it without tearing the house apart, then fix it.

We pinpoint hidden leaks without tearing up your home.

Call (626) 360-8993Get a free quote
  • Non-invasive locating
  • Slab & wall leaks
  • Open 24/7

Get a free leak detection estimate

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Or call (626) 360-8993

Flash Plumbing technician inspecting pipes in a crawlspace with a headlamp

Leak Detection

Signs you have a hidden leak

Most leaks start small and out of sight. Catching them early keeps a repair from turning into drywall, flooring and mold work.

  • Water bill higher than usual
  • Running water sound with everything off
  • Warm or damp spots on the floor
  • Stains, bubbling paint or a musty smell
  • Water meter moving with no water in use
Get a free quote Call (626) 360-8993
Flash Plumbing technician fitting a new drain pipe overhead

Leak Detection

How we find and fix it

We narrow the leak down first, so the opening is small and the repair is targeted.

  • Non-invasive leak locating
  • Slab, wall, ceiling and yard leaks
  • Repair or reroute of the bad line
  • Pressure test to confirm the fix
  • Upfront price before we open anything
Get a free quote Call (626) 360-8993

Why Flash Plumbing

Why homeowners choose us.

  • Find it first

    We locate the leak before cutting, which keeps openings small.

  • Fix it right

    Repair or reroute, explained in plain language with an upfront price.

  • Any hour

    Active leak at night? We answer 24/7.

How it works

Four steps to fixed.

From the first call to a clean work area, you know what's happening and what it costs.

Call (626) 360-8993Get a free quote
  1. 01

    Call or request service

    Call (626) 360-8993 or send the form. A real person answers, day or night.

  2. 02

    We diagnose it

    A licensed technician finds the cause, not just the symptom, and shows you what's going on.

  3. 03

    You approve the price

    You get your options and an upfront price before any work begins.

  4. 04

    We fix it and clean up

    The job gets done right, tested and cleaned up before we leave.

Reviews

Neighbors who call us back.

  • Fixed leak same day

    Flash Plumbing Inc took my job on the same day! I had a leaking toilet upstairs that threatened to damage the ceiling downstairs. The guys arrived and fixed the issue! Will definitely use them in the future.

    Kenneth R.

  • Professional, great service

    Flash Plumbing Inc checked out my plumbing problem and gave me different options on how to fix it. I am so grateful for them. They were professional and provided great service. I will recommend them to many friends.

    Lilia Z.

  • The only plumber we will call

    A fair price and a really easy company to work with. I’ve lived in my house for 10 years and have used 3 plumbers. This is the only plumbing company I will work with again.

    Michael L.

  • Outstanding service & workmanship

    Service and workmanship are outstanding. Great family-owned business. Very easy to work with. Very responsive. If you need a plumbing service, you should definitely be calling Flash.

    Robert L.

  • They explained everything

    Flash Plumbing Inc had top customer service and amazing communication. Daniel and his team explained the whole process and gave me options. Honest, cost was affordable, and very skilled in plumbing.

    George G.

  • Excellent job, respectful team

    Flash Plumbing Inc did an excellent job! They swapped out the 40-gallon tank for a new tankless heater. The entire time, they were professional, courteous, and respectful. They left the area cleaner than when they started.

    Iris Z.

  • Daniel & crew are great

    Daniel and crew were great, taking the time to get my 50-gal water heater installed right and now looks great with working shut off values!

    Ruben R.

  • Honest assessment & quality work

    I’ve used Flash twice: once for a major operation to replace some shower pipes and once for a simple kitchen sink clog. In both cases, they were great! Responsive, same day service, and honest assessment of my options. Fast and high quality work.

    David M.

  • Seamless experience

    I would highly recommend this company. I had a seamless experience. Pricilla the manager was lovely to deal with and very helpful with all of my questions.

    Sasha K.
Call (626) 360-8993Get a free quote

Service area

Leak Detection across the valley.

We're based at 1578 W San Bernardino Rd, Suite H in Covina and serve homes and businesses within about 30 miles, across the San Gabriel Valley.

  • Covina
  • West Covina
  • Glendora
  • San Dimas
  • Baldwin Park
  • Azusa
  • La Verne
  • Charter Oak
  • Irwindale
  • Duarte

Not sure? Call (626) 360-8993.

FAQ

Leak Detection questions.

Still have a question? Call (626) 360-8993

How much does leak detection cost?

It depends on the home and where the leak is. Flash Plumbing Inc. quotes the locating and any repair upfront before work begins, so there are no surprises.

Will you have to break my floor or walls?

Sometimes a small opening is needed to reach the pipe, but locating the leak precisely first keeps it as small as possible. For slab leaks, rerouting the line can avoid breaking the slab at all.

Is a slab leak an emergency?

An active slab leak should be handled quickly, because it can damage flooring and the foundation and run up your water bill. If you hear water running, shut off the main and call us.

Can you check my water meter for a leak?

Yes. Turn off every fixture and watch the meter. If the dial or leak indicator keeps moving, there's likely a leak, and we can track it down.

Open 24/7

Need leak detection? Call now.

  • A real person answers, day or night
  • Upfront price before any work starts
  • Free estimates
  • 10% off for new customers

Call now: (626) 360-8993

Call (626) 360-8993Get a free estimate