What Our Clients Say
4.8 / 5 From 8.2k Reviews
Harts forever Warranty
- On Select Equipment and Services*
- Lifetime Warranty on Parts and Labor*
- Transferrable*
*Call for details
Find Hidden Water Leaks
Water Leak Detection
When you suspect a hidden water leak, every minute counts. At Harts Plumbers, Electricians, & HVAC Technicians, our licensed plumbers provide fast, accurate leak detection for homes and businesses across the Puget Sound region. Using advanced, non-invasive technology, we pinpoint leaks behind walls, under slabs, and underground—without unnecessary damage or guesswork. When it comes to protecting your home from water damage, trust the professionals who care more.
When you suspect a hidden water leak, every minute counts. At Harts Plumbers, Electricians, & HVAC Technicians, our licensed plumbers provide fast, accurate leak detection for homes and businesses across the Puget Sound region.
4.8 / 5 From 8.2k Reviews
Using advanced, non-invasive technology, we pinpoint leaks behind walls, under slabs, and underground—without unnecessary damage or guesswork. When it comes to protecting your home from water damage, trust the professionals who care more.
Save On Plumbing
Offers & Discounts
Check out the current promos and coupons from Harts Plumbers, Electricians, & HVAC Technicians.
$93
Or Free
Clogged Drain Special
$250
OFF
Tankless Water Heater
$39
Sewer
Inspection
Mainline Camera Inspection
$100
OFF
Standard Water Heater
5%
OFF
Heroes Discount
$89
OFF
Plumbing Service
$775
OFF
Drain Cleaning
Free
Water Quality Test
$93
Or Free
Clogged Drain Special
$250
OFF
Tankless Water Heater
$39
Sewer
Inspection
Mainline Camera Inspection
$100
OFF
Standard Water Heater
5%
OFF
Heroes Discount
$89
OFF
Plumbing Service
$775
OFF
Drain Cleaning
Free
Water Quality Test
Solutions for Homes & Businesses
Professional Leak Detection Services
Even the smallest water leak can lead to major problems: rising utility bills, mold growth, foundation cracks, and costly structural damage. That’s why homeowners and businesses across Western Washington rely on Harts leak detection specialists for solutions.
Whether you suspect a slow drip or a broken underground pipe, our team uses leak detection tools and professional training to pinpoint the problem with precision.
Our Leak Detection Services Include:
- Whole-home leak inspection
- Slab leak detection
- Underground water leak detection
- Outside water line inspection
- Electronic leak location
- Leak repair and pipe replacement
We provide same-day and next-day service throughout the Puget Sound because when it comes to water damage, time matters.
Precise Leak Repair
Once the leak is located, our licensed and insured plumbers provide you with a clear repair plan and upfront pricing. Whether it’s a minor pipe repair or a complex underground water leak repair, we complete the fix efficiently, restoring your home’s safety and water efficiency.
Pinpointing Leaks
How to Find a Water Leak in Your House
Not all leaks are easy to spot. In many homes across Western Washington, leaks develop silently inside walls, under floors, or beneath slabs which cause major damage long before they’re visible. Early detection is key to preventing water waste, structural damage, and mold growth.
Common signs of a hidden leak
Unexplained spike in your water bill: A sudden increase without higher usage often points to a hidden leak.
Sounds of running or dripping water: Hearing water when no fixtures are on is a red flag.
Musty or damp odors: Persistent smells can indicate moisture trapped behind walls or under flooring.
Stains or discoloration: Water marks on ceilings, walls, or floors (especially if spreading) are tell tale signs of a slow leak.
Warm spots on concrete floors: Often a symptom of a slab leak beneath your foundation.
Mold or mildew growth: Moisture creates the perfect environment for fungi to thrive.
Low water pressure: Large leaks can reduce pressure throughout your plumbing system.
If you’ve noticed one or more of these warning signs, it’s time to call the leak detection experts at Harts Plumbers, Electricians, & HVAC Technicians.

Protect Your Home
Residential Leak Detection
Your home’s plumbing system is complex, there are pipes running behind walls, under floors, and beneath your yard. That’s why DIY leak detection often leads to guesswork and more damage. At Harts, we specialize in residential water leak detection for every type of home, from older houses to new construction.
Our expert pipe leak detectors can locate:
Leaky pipes under sinks or behind walls
Hidden leaks inside crawl spaces
Corroded or cracked copper, PVC, or PEX lines
Slab and foundation leaks
Outdoor irrigation or yard line leaks
Once located, our plumbers will discuss your repair options and provide an upfront estimate so you can make an informed decision.
Fast Response. Minimal Disruption.
Leak Detection for Commercial Buildings
Water leaks can halt your business operations fast. Whether you manage a restaurant, retail store, or apartment building, undetected leaks can cause expensive damage and water loss.
Harts’ commercial leak detection services use industrial-grade detection equipment to locate leaks quickly and precisely without interrupting your workflow. From underground water lines to commercial restrooms and boiler systems, we ensure accurate detection and dependable repair and backed by a satisfaction guarantee.
Leaks Beneath the Surface
Underground Leak Detection
Leaks don’t always happen indoors. Many homeowners experience outdoor water line leaks, often caused by root intrusion, corrosion, or shifting soil. Left unchecked, these leaks can lead to muddy lawns, low water pressure, or foundation erosion.
Our plumbers use advanced underground leak detectors to locate water leaks beneath driveways, yards, and concrete slabs without unnecessary digging.
We’re the leak detection company Western Washington homeowners trust to protect their property and restore efficiency.

Finding Slab Leaks
A slab leak occurs when water pipes beneath your home’s concrete foundation develop a leak which is often due to corrosion, ground movement, or poor installation. These leaks can waste thousands of gallons of water and compromise your foundation if ignored.
Signs of a slab leak:
Warm spots on your floors
Cracks in tile or concrete
Mold or mildew near baseboards
Running water sounds when fixtures are off
Harts’ slab leak detection specialists locate and repair the problem efficiently, minimizing disruption to your home.
Expert Solutions
Water Leak Repair
Finding the leak is only the first step, fixing it properly is what prevents it from coming back. Once our technicians locate the source, they provide a detailed report and repair recommendations.
We offer:
- Pipe leak repair and rerouting
- Slab leak repair
- Underground water line replacement
- Fixture and fitting repair
- Preventive maintenance through the Harts Home Care Plan
Our repairs are performed by licensed and insured plumbers, using durable, code-compliant materials for long-lasting protection.

Why Choose Harts
Homeowners and business owners across the Puget Sound choose Harts for our expertise, transparency, and care.
What sets us apart:
Transparent pricing
- Flexible Financing Options
100% Satisfaction Guarantee
Forever Warranty
Harts Home Care Plan
- Heroes Discount: We proudly offer a discount to military, veterans, first responders, teachers, and seniors.
We’re more than plumbers, we’re your partners in protecting your property from water damage. View all plumbing services.
Harts Plumbers, Electricians, & HVAC Technicians Tacoma
Reviews

Your Trusted Leak Detection Company
As a locally owned leak detection company with deep roots in the Pacific Northwest, Harts is proud to serve homeowners and businesses throughout King, Pierce, Kitsap, and Thurston counties. Our plumbers specialize in accurately locating and repairing water leaks.
We combine precision leak detection, honest communication, and the “We Care More” philosophy that defines every Harts service call.
Find a Harts Leak Detection Specialist near you and read verified reviews from your neighbors on our Google Business Profiles:
Proudly Repairing Leaks in the PNW
Peace of Mind
Harts Home Care Plan
Choosing the Harts Home Care Plan is an investment in the anatomy of your home. Home Care Plan Members are forward thinking homeowners who believe in preventative maintenance to avoid emergencies and unnecessary costs. Check out all the benefits of being part of the Harts Family.
You Receive Priority Service
Whether you’re calling for routine or emergency service, you will receive the earliest available scheduling.
Free Consultations
We will gladly assess any repair needs you have and provide options at no additional charge to you for the duration of your membership… a $79 savings every visit.
10% Members-Only Discounts
You will receive a discount up to 10% off all service work for the duration of your Membership. (Discount is limited to a maximum of $200 per service request)
Contact Us Now
Tacoma Harts Plumbers, Electricians, & HVAC Technicians
- Open 24/7
Call Us Today
4.8 / 5 From 8.2k Reviews
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Frequently Asked Questions
How much does it cost to fix a leak?
The cost of hiring a plumber to fix a leak varies depending on the complexity and location of the leak (underground, slab, or wall). Harts offers transparent, upfront pricing, and the cost of detection is often minimal compared to the long-term water bill savings and structural damage prevention. Schedule an appointment for an accurate estimate.
Is a slab leak an emergency?
Yes, a slab leak is considered an emergency. The constant flow of water under your foundation can compromise the structural integrity of your home, cause severe mold growth, and lead to major utility waste. You should call a Harts immediately if you suspect a slab leak.
Are your plumbers licensed and insured?
Yes, all Harts plumbers are fully licensed, bonded, and insured in Washington State.
How long does it take to detect a leak?
Most common plumbing leaks can be detected within a few hours. Complex leaks, such as deep underground or certain slab leaks, may take longer to confirm. We strive for a fast, accurate diagnosis to minimize disruption to your home.
Can you locate underground or outside water leaks?
Yes. A Harts Plumbers can accurately locate underground water leaks in yards, driveways, or beneath concrete without large-scale excavation.
Do you repair leaks once you find them?
Yes. Once the leak is found, your plumber will recommend the most effective repair method, whether that’s pipe replacement, rerouting, or spot repair.
Do you offer leak detection for businesses and commercial properties?
Yes. Harts provides commercial leak detection services for offices, retail spaces, restaurants, and multi-unit buildings throughout Western Washington.
Can a small leak really cause serious damage?
Yes. Even a small leak can waste thousands of gallons of water per year and lead to mold growth, structural damage, and higher utility bills.
Does Harts offer maintenance plans to prevent future leaks?
Yes. The Harts Home Care Plan includes annual plumbing inspections and maintenance discounts that help prevent leaks before they start. It’s a simple way to protect your home, reduce water waste, and extend the life of your plumbing system.
Tacoma
Home Services
Plumbing
Our expert plumbing service offers reliable repairs, installations, and maintenance for homes and businesses. Trust us for efficient, professional solutions to all your plumbing needs.
Sewer & Drain
Our sewer technicians ensure your system flows smoothly, preventing backups and damage. Trust our expertise for fast, reliable, and effective sewer and drain solutions.
Electrical
Our residential electrical technicians specialize in home wiring, panel upgrades, and efficient lighting. Trusted professionals, ensuring safety and quality with every project.
HVAC
Our HVAC Technicians offer expert solutions for heating, ventilation, and air conditioning issues, ensuring efficient, prompt service to keep your environment comfortable.
Schedule a Service Today
Five-Star Service
Keeping your home running smoothly, water flowing, toilets flushing and showers draining is our business. The promise of caring for our customers and our community is our privilege. Don’t do any of the dirty work yourself when you have skilled plumbing, drain, sewer and septic experts right here in your neighborhood.