High Water Bill? We Do Leak Detection and Repair! Learn More Here!
Gene Johnson plumber and homeowner examining water leak from ceiling pipe.

Water Leak Detection Services in Seattle, WA

over 4680 reviews

    Call us at 206.792.7495 today for dependable Seattle water leak detection. We will send an experienced plumber to find those hidden leaks and save you money.

    Water leaks have a sneaky way of causing trouble long before anyone notices something is wrong. A small drip behind a wall or a slow leak under the floors can quietly soak into wood, weaken drywall, and turn a simple issue into a major repair. By the time a homeowner spots mold growth, warped flooring, or a strange spike in the water meter, the leak has usually been around for a while. It can be frustrating and, honestly, a little overwhelming when you do not know where the water is coming from or how much potential damage has already taken place.

    At Gene Johnson Heating, Cooling, Plumbing & Electrical, we help Seattle homeowners and businesses track down hidden leaks and put an end to the problem quickly. We’ve been serving Western Washington for over 45 years with responsive service and a team that takes pride in solving tough plumbing issues the right way. Whether you own a home, a rental property, or a commercial building, our specialists use advanced leak detection techniques and reliable equipment to locate the problem at its source and protect your property.

    $500 Off

    Outdoor Waterline Replacement

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    Bathroom Refresh Buy 3 Fixtures, Get the 4th FREE

    Upgrade your bathroom’s look and feel. Replace any three fixtures (faucet, toilet or showerhead) and get the fourth one absolutely FREE. Fresh style, better performance and more savings!

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    Tankless Water Heater Instant Rebate

    Upgrade to endless hot water and energy efficiency. Get $250 off your new tankless water heater installation and enjoy free maintenance for the first year, all in one unbeatable offer!

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    No Payments for 12 Months

    Enjoy a new high-efficiency HVAC system without the upfront cost. Call today and start saving on energy instead of your comfort.

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    Fast fix Guarantee

    Book today and we aren’t able to get out within 24 hours your dispatch fee is waived.

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    Free Second Opinion

    Have a quote that’s just not sitting right? Don’t just settle! Let us come out and take a look at no extra cost to you.

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    We fix or YOU DON’T PAY

    Your dispatch fee goes toward the cost of repairs or replacement and if we can’t solve the problem, we waive it completely. Call today for risk-free service!

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      Water leaks can hide in some tricky places, but our trained team follows a detailed process that gives us a clear path from the first inspection to the final repair. We use tools that allow us to locate leaks without unnecessary digging or opening walls unless it is absolutely required.

      With this process, we eliminate guesswork and avoid unnecessary damage to your property. Our goal is to detect the leak quickly, give you clear answers, and recommend next steps that make sense for your home or business.

      Once the source is identified, you will know exactly where the issue is and what needs to be addressed. We want you to feel confident in the plan before any repair work begins.

      Finding the leak is only part of the job, and we never leave clients hanging once the source has been located. Our plumbers handle everything from simple pipe repairs to replacing damaged sections of your water line. Whether the leak is tucked behind drywall, hiding under flooring, or found outside in the yard, we complete the repair with careful workmanship and long-term reliability in mind. You will know what caused the issue, what we fixed, and how to prevent similar problems in the future.

      Some leaks cannot wait, especially slab leaks or open pipe leaks that allow water to flow freely into the property. Our team provides emergency plumbing response 24 hours a day, so Seattle homeowners and businesses are not stuck watching water damage spread. If you notice sudden running water, hear a burst pipe, or find water rising where it should not be, we respond quickly with the equipment needed to stop the problem and repair it safely.

      What Are the Most Common Signs of a Hidden Water Leak?

      Many leaks stay hidden for weeks or months, but small clues often show up if you know what to look for. Homeowners may notice changes in water usage or see strange patches forming around the house. Some of the most common signs include:

      • A higher-than-usual water bill
      • Discoloration or bubbling on walls or ceilings
      • A patch of warm flooring over a hot water line
      • Sound of running water when no fixtures are used
      • Soft spots in the yard or sidewalk areas
      • Musty smells indicating mold growth

      Any of these signals could mean a water leak is present. Detecting it early helps save money and prevent long-term damage.

      How Does Leak Detection Actually Work?

      Professional leak detection relies on tools and training rather than guesswork. The process involves identifying moisture, listening for escaping water, and analyzing pressure behavior inside the plumbing system. Our team uses several techniques during an inspection.
      These include:

      • Moisture meters to measure dampness inside structures
      • Infrared thermal imaging to highlight unusual temperature patterns
      • Acoustic listening devices for underground or in-wall leaks
      • Meter checks to measure unexpected water usage
      • Pressure tests that isolate the leaking line

      Each tool gives us a piece of the puzzle. By combining them, we locate the leak accurately and explain what is happening before starting repairs.

      What Should I Do If I Suspect a Leak in My House?

      If you notice early signs of a leak, it is best not to wait. Even a slow drip can cause substantial damage when left untreated. Start by checking the water meter to see if water use increases when no fixtures are running. Make a note of where you see stains, damp spots, or hear unusual noises. Then contact a professional plumber to assess the situation. We can determine whether the leak is minor or if more serious issues like slab leaks or deteriorating pipes are present. Acting early protects your property and may save money on repairs in the long run.

      Are Leak Detection Services Worth the Cost?

      Many homeowners are surprised by how much water leaks can impact a property. The cost of leak detection is usually far less than repairing extensive water damage later. A hidden leak can wear down floors, walls, and insulation, and sometimes create mold that affects indoor air quality. When you invest in professional leak detection, you benefit from:

      • Early discovery of problems before major damage occurs
      • Reduced repair costs by catching issues quickly
      • Accurate locating, which avoids unnecessary demolition
      • Protection of your home’s structure and personal belongings
      • Peace of mind knowing the plumbing system is working correctly

      Leak detection services provide strong value because they help you save money and avoid larger problems that could disrupt your home or business.

      Why Choose Gene Johnson for Expert Leak Detection Services

      Seattle homeowners rely on our company for reliable service, honest communication, and accurate results. We specialize in locating leaks quickly, and we stand behind our work with a commitment to quality and efficiency.

      • Technicians trained with advanced leak detection equipment
      • Clear, easy-to-understand explanations of the problem
      • Repairs completed with care and long-term durability
      • Fast response for residential and business properties
      • A local team with decades of experience in Western Washington

      Our focus is to find the problem, address it properly, and give homeowners peace of mind knowing the issue is resolved.

      Contact Gene Johnson Today for Trusted Water Leak Detection Services in Seattle, WA

      Water leaks rarely fix themselves, and waiting can turn a manageable issue into a costly repair. If you have noticed unusual signs around your house or business, or you simply want reassurance that your plumbing system is safe, our team is ready to help. We offer responsive water leak detection services with trained technicians who understand the unique challenges Seattle homes face. From moisture issues to sudden pipe failures, we take every situation seriously and respond with the right tools and experience.

      Reach out to schedule an inspection or request immediate support if you are dealing with an urgent leak. Our specialists arrive prepared, walk you through the findings, and ensure the problem is addressed before it creates further damage.

      Call Gene Johnson Heating, Cooling, Plumbing, and Electrical at 206.792.7495 in the Seattle, WA area, and we will send a plumber to get the situation under control.

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      QUALITY SERVICE

      Within Your Budget

      The best plumbing, cooling, heating, and electrical services shouldn’t have to break the bank. That’s why we are happy to provide our customers with opportunities to save on their next service with us. Our current online deals are updated periodically, so there is something for everyone, whether you are a first-time customer or a long-time loyalist.

      Here are some benefits of trusting Gene Johnson with your HVAC, Plumbing, and Electrical needs.
      • Best value service in Seattle
      • Always on-time arrival
      • No mess left after a job
      • Friendly team that truly cares about your safety and comfort
      • Fixed right guarantee
      • Upfront pricing
      • Follow up calls to ensure your peace of mind
      • Range of service options- no ultimatums!

      Total reviews: 4680 | Average rating: 4.8

      5

      Colby was extremely helpful, honest, and communicative throughout the process of repairing our cracked toilet. He went above and beyond to make sure everything was done with care. Thank you so much!

      5

      Tyler was fantastic! We came home to find our hot water tank had leaked all over the downstairs of our home. Tyler arrived first thing in the morning to diagnose the problem and then replace the tank. Thank you for a great and speedy job!!

      5

      Mark Ochoa was very efficient. I thought he did a great job explaining everything he was doing. You have an efficient and professional employee.

      5

      Armando Caballero-Cano came to work with a stopped up drain for my client – same day service. He was courteous and clean and explained tips and tricks for them to keep their drains healthy. Thank you Armando!

      5

      I went 2 days without hot water. He came and before he left I had hot water again. My other unit was trash.

      5

      Had a sudden plumbing problem and Mike K. was able to get there in less than 2 hours and get the problem fixed fast. Thanks!

      5

      Very happy with our water heater maintenance check today by Gene Johnson Plumbing. Our technician Branson did a thorough job, was friendly, and did a great job communicating what had been done and any items of note while completing the task at hand.

      5

      Mark Ochoa Was extremely professional. He took the time to explain everything extremely well. I would definitely recommend them. Fast and courteous.

      5

      Mike K. is very knowledgeable and professional. I appreciated his honesty and would recommend Gene Johnson Plumbing.

      5

      Called to get leaky water tank replaced. The team sent Jeff over and performed way above any expectation… He is a great tech but mostly a wonderful human being. He was clear and complete in his communications. Helpful and thoughtful the whole way through. Great guy! His knowledge and professionalism shines in what he does, and does well. I have his card and will not ever hesitate to reach out, for anything that may come up in the future. Jeff leads in representing what I like to call “old school” approach to customer service and managing any task or service he provides, from simple to complex. You got a winner there, for sure!

      5

      Nice work, thank you.

      5

      Our Plumber was Justin, he was great

      5

      Mark O. came to my home today to inspect my plumbing and water heater. He was very professional and made sure I understood all of the problematic things that he found and what it would cost to address them. He even took a little extra time to explain things to my very curious 6 year old that insisted on following him around throughout his entire inspection. We highly recommend Gene Johnson for all of their services and if you can, ask for Mark to come do your water inspection/repair!

      5

      Thank you, Joe!
      The service was prompt and efficient.
      Joe went the extra mile to get the job done sooner than later! Very nice,
      Highly recommended!

      4

      Had Justen come out for a faucet replacement. He was great and quick. The only thing is Gene Johnsons prices seem to be higher and higher. It was a surprise to me that when they replaced a toliet with one I bought, to take out the old and install a new one was $1016. That did not include the new hose and valve. Those little things have to be replaced too and that doesn’t bother me as much. But high to just install a Glacier Bay toliet with nothing fancy.

      5

      Particularly liked our installer, Matthew who went above and beyond and beyond.

      5

      Mark Ochoa worked hard, was knowledgeable, and stuck with a very difficult job. We are very satisfied!

      5

      Tyler’s team, Greg & Rory were amazing! Everything was done efficiently, they even backfilled the holes with fresh soil, put seeds on top, poured concrete in the garage and cleaned up their mess, this is way more than what I asked for. Nothing but praise from me, thank you again!

      5

      Excellent service and workmanship as always. Won’t use any other company for plumbing and electrical work!

      5

      Chandler Price came out to fix a leaking pipe under the sink. He was super quick and very communicative. Would absolutely work with him again in the future!