Water Leak Repair | Spokane Water Line & Slab Leak Repairs

Call For Service Today! (866) 411-9277

Your water line is your home’s primary source of potable water. It connects you to the municipal water supply and flows to your sinks, toilets, showers, and appliances like your water heater and washing machine. 

Plumbing leaks can happen anywhere throughout your home. You may not even know you have a leak until there’s suddenly mold on the walls, the floors have warped, or a section of your lawn has become suspiciously lush. By then, your home might have suffered thousands of dollars worth of water damage.

Water line damage is a major concern that should be addressed immediately. Whether the source of your water leak is inside the home or hidden underground, Mainstream’s team of expert plumbers is available and ready to help with 5-star leak repair services.

How to Spot Water Line Damage

When exposed to the elements over time, your home’s water line is subject to natural wear and tear. You are responsible for the upkeep of water lines on your property, so it’s important to maintain your plumbing system and anticipate repairs when needed.

Common causes of plumbing leaks include:


Clogged pipes

Freezing temperatures

Ground movements

High water pressure

Tree roots

Improper plumbing installation

Old pipe materials

Since most of your pipes are hidden out of sight behind walls or underground, you need to keep an eye out for subtle signs that can appear as a result of water line damage.

Signs of a Leaky Water Line

Unexplained Water Puddles

The most obvious sign of a water leak is water where you don’t expect it. You might notice soggy sections of carpet, random puddles on hard floors, or excess water on part of your lawn. Puddles in areas without a nearby water source can indicate a more severe leak than puddles by a sink or toilet.

Drastic Changes in Water Pressure

If you notice the water pressure suddenly drop, check all the sinks and showers throughout your home. If there’s low or no water pressure everywhere, you may have a major leak and should shut off the water supply.

A Sudden Spike in Your Water Bill

Most households use roughly the same amount of water each month. A dramatic increase in your monthly bill, when your routine hasn’t changed, is a more subtle sign that it’s time to call a plumber.

Water Spots and Mold

Water soaking in your walls or ceilings may create discolored water spots, grow mold, and develop a bad smell.

Foundation Issues

If you’ve got a hidden slab leak, that water has to go somewhere. Excess water underground can crack the foundation, warp your floors, and cause the ground to shift underneath your property.

Discolored, Rusty Water

Rusty, smelly water is a sign that your pipes are deteriorating and must be replaced. Older plumbing systems are more susceptible to failure from corrosion due to long-term exposure to water, mineral buildup, and acidic particles that break down pipe materials.

Sounds of Running Water

Water leaks can hiss, bubble, or flow behind your walls. If you hear these sounds when you aren’t running water on purpose, there is probably a leak.

Don’t hesitate to call Mainstream if you notice these signs of water line damage. Even small pinhole leaks can become gushing leaks if not properly addressed and repaired, so it’s important to treat every case seriously. 

When in doubt, shut off your water supply and consult a licensed plumber. For urgent cases, Mainstream even offers emergency services so your issue can be seen that same day as soon as possible.

Types of Plumbing Leaks

Chances are you’ve heard of some specific terms for various leaks, such as pinhole leaks or slab leaks. Here is a quick overview of those terms and what they mean.

Pinhole Leaks

Pinhole leaks are very tiny holes in your pipes that slowly lose water over time. This type of leak typically develops from corrosion. Water that is too hard or too soft can accelerate this process because hard water rich in minerals will build up and break down pipes, and naturally soft water pulls minerals from your pipes and wears it down from the inside out.

Slab Leaks

Slab leaks refer to water leaks under your foundation. These leaks can go days or weeks without being noticed, and the resulting damage can be expensive to repair. Slab leaks often happen when old pipes have worn down due to decades of use. To avoid slab leaks, routine plumbing inspections will help you keep track of the health of your water line and make repairs before they completely fail.

Burst Pipes

Burst pipes are exactly what they sound like – gushing water from pipes that can very quickly cause major water damage and put your safety at risk. Burst pipes most often happen as a result of freezing temperatures. Water expands when turned to ice, so the additional pressure can build up and rupture your water line if left frozen for too long.

Your Trusted Leak Repair Professionals at Mainstream

A compromised water line affects the well-being of your entire house, not to mention those who call it home. Protect your home with regular plumbing maintenance, and call Mainstream the moment you discover a water leak!

Schedule an appointment today to receive trusted, locally-owned service for over 21 years.

Upfront pricing - you’ll never pay more than you’re quoted

Expert advice from professional, licensed & certified technicians

We stand by all recommended services

Flexible scheduling (ask about same-day service!)

Check out why your neighbors trust us to get the job done right

Professional, friendly, efficient and courteous.

Had my water system upgraded, gas lines installed, additional electrical service, furnace and A/C systems replaced, and some plumbing corrections. I had just moved into the house and found a one-stop-shop for all of the essential home systems to be updated and repaired/replaced. They follow up, show up on time, and even call after hours to ensure good customer service. Robert, Zach, Megan, Shane, Kyle, and a few whose names I didn’t catch. All have been a pleasure to have work in my home.
Salvatore L.

Same-day service!

Able to obtain same day service to troubleshoot a hot water issue. Technicians showed up promptly and wore masks, gloves and foot covers. Thoroughly explained three options for resolution in a professional, no pressure manner. I highly recommend this company.
Barbara H.

Above & Beyond

Technician Steve, was very thorough in his investigation. Went above what I asked for, we had a black water flood and I was just asking to have the toilet and sink reinstalled. He put his camera through my sewer system to make sure that we were not going to have future issues. He made sure that I was able to see what he saw. It was educational to say the least and he was great at explaining what was in there. Feel very safe using his services and do not feel that he is taking advantage in any way. Highly recommend Steve!!
Aaron S.

Very Professional

It was really shocking the amount of damage our pipes had and mr Johnson helped to explain what the issue was... He worked within our budget and created a couple of quotes with positive solutions. We went with the one we felt was necessary and he worked quickly getting that issue resolved. Very professional and knowledgeable.
Idella K.
Read all our reviews

See Why Mainstream is A Spokane Favorite

If you’re unsure whether your water line needs to be repaired, our experts are here to help. Or, if you already know your water line needs to be checked out, call us at (866) 256-4350 today. We’ll diagnose the problem quickly and offer the best solution for your home.

Special Offers in Spokane Valley, Washington

FREE Service Call with Repair

Schedule Now
Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers
$79 Once a Year, You’re in the Clear HVAC System Checks
Original Price: $ 129
Savings:$ 50
Sale Price:$79

Super convenient Heating & AC Check. Why are checks important?

  • Keeps your systems running at peak efficiency
  • Helps prevent unexpected breakdowns
  • Extends the life of your equipment
  • Keeps your family safe from carbon monoxide leaks

Schedule Now
Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers
$79 Off Any Repair

Schedule Now
Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

Get In Touch

"*" indicates required fields