Water leak detection in Seattle for commercial and multifamily buildings
Managed leak detection, 24/7 monitoring and automatic shutoff for condos, multifamily and commercial buildings across the Puget Sound region.

- 150,000+
- active smart devices in the field
- $2.26M
- in water costs saved in 2025
- 24/7
- monitoring center
Why Seattle buildings carry water risk
Seattle's multifamily stock is young. In 2020, about a third of the city's multifamily units were under 10 years old, and more than a third were 20 to 50 years old. The oldest layer still matters. More than 1,100 unreinforced brick buildings, generally built before 1945, stand in the city, concentrated in downtown, First Hill, Capitol Hill and the University District.
Seattle's newest towers carry a different risk. Builders opened a record number of homes in the city in 2024, nearly all of them apartments in multifamily or mixed-use buildings, with thousands more in the pipeline. Greater Downtown has the newest stock, with more than two in five of its multifamily units under 10 years old in 2020. New plumbing fails too, at fittings, appliance connections and HVAC lines. A leak high in a new tower travels down through finished suites below.
A hard freeze is Seattle's other test. In January 2024, with highs barely above 20°F over a weekend, the Seattle Fire Department responded to more than 150 water leaks and a First Hill hospital reported flooding in patient rooms. Eddy's monitoring center confirms every alert around the clock, calls the building's contacts through the escalation protocol within minutes of the SMS, email and app alerts and can close a valve remotely when the building's response plan calls for it.
Where leaks start in Seattle buildings
Decades-old lines in older buildings
In 2020, more than a third of Seattle's multifamily units were 20 to 50 years old, and the city's pre-1945 brick buildings are older still. Supply lines, valves and fittings that have run that long fail slowly and out of sight, which is exactly what continuous monitoring catches first.
Hidden leaks turn to mold
About three quarters of Seattle's precipitation falls from October through March, and a leak inside a wall stays wet instead of drying out. Early detection keeps a small failure from turning into an expensive remediation.
Dense new multifamily
In 2016 Seattle set a goal of 70,000 new units by 2035, and it passed that mark in 2024. That is a lot of new plumbing under load. Monitoring from day one catches the early failures.
Leaks billed as water and sewer
A running leak shows up on the Seattle Public Utilities bill as both water and sewer, and SPU's leak adjustment rule limits relief to two billing periods once per calendar year. Flow monitoring flags the abnormal run before the bill arrives.
Smart leak detection in Seattle
A smart water leak detection system pairs wireless sensors and smart meters with automatic shutoff, so a Seattle building catches a leak in seconds instead of discovering it from a ceiling stain. Eddy runs the full stack as one managed program with a staffed 24/7 monitoring center on the chain.
Sensors plus flow intelligence
3-in-1 wireless sensors watch high-risk spaces for water, temperature and humidity while smart meters flag abnormal flow against thresholds learned from the building's own baseline.
No building Wi-Fi needed
Devices run on Eddy's own LoRaWAN network at 915 MHz, a long-range radio that holds a signal through concrete. Gateways backhaul over Ethernet or LTE cellular, and with cellular backhaul monitoring stays up even if building internet goes down.
Shutoff plus a live response
Automatic valves close the moment a configured rule fires, and Eddy's monitoring center calls the building's contacts within minutes of every alert. Every confirmed event closes with a Leak Incident Report.
See how the Eddy system works, from sensor placement to the monitoring center.
Coverage map
How Eddy works in a Seattle building.
In Seattle's constant moisture a hidden leak becomes a mold problem fast, and years of rapid construction put a lot of new plumbing under load. Turn the building to see where sensors, meters and valves sit, then run a leak through the system, from the first drop to the monitoring center's response.


Occupied building · Business hours
Drag to turn the building. Select a label, or run a leak through the system.
The system
Detect, control and respond, in one managed program.
Sensors sit where leaks start and meters watch the flow. Valves close on the rules you set, and a 24/7 monitoring center follows each alert until your team has eyes on it.
3 layers and 16 close-ups in this building
Detect
Two ways to find a leak before it finds a unit.
Sensors sit where leaks start, and meters watch the flow for the leaks no sensor can reach.
8 close-ups · select one to zoom in
Point-of-leak
Flow-based
Control
Valves that close the water before it closes the unit.
Valves close on the rules you set, automatically on a threshold or remotely from the dashboard.
4 close-ups · select one to zoom in
Respond
A live monitoring center that closes the loop.
Alerts go through Eddy's cloud to a 24/7 monitoring center, and an operator calls your team until someone has eyes on the water.
4 close-ups · select one to zoom in
What happens in a leak, step by step
- A washing machine supply hose bursts in a suite upstairs.
- Eddy H2O under the washer detects water and sends the alert over LoRaWAN.
- The building's gateway relays it. Your team and the 24/7 monitoring center are alerted at the same time.
- A shutoff rule closes the suite's Eddy IQ valve. The water stops at the source.
- An operator confirms the alert and calls your on-site team through the escalation protocol.
Automatic shutoff is configured per building. Some sites use operator-coordinated isolation instead.
Smart sensors at every leak point
Eddy places point-of-leak sensors and smart flow meters where water damage actually starts in Seattle buildings, from the mechanical room to a laundry hose, so a leak is caught at the source and shut off before it spreads.

Mechanical rooms
Boilers, water heaters and main risers, where a single failure floods fast.

HVAC and fan coils
Heat exchangers and condensate lines that drip behind walls and ceilings.

Kitchens
Supply lines, shutoffs and appliance connections under and behind the sink.

Bathrooms
Toilets, vanities and concealed in-wall fixtures on every floor.

Laundry
Washer hoses and laundry connections, a top source of overnight leaks.
Every minute changes the bill.
A leak gets bigger the longer it runs. Eddy detects in seconds and the monitoring center escalates within minutes, so the same failure is contained around minute two. Unmonitored, an after-hours leak runs six to eight hours before anyone arrives.
The leak starts at minute zero. Eddy contains it around minute two. Unmonitored, the same leak runs six to eight hours before staff arrive, and that red stretch is the avoided claim.
Build your system
Design your building's leak protection.
Two minutes of quick questions gets your building the right protection, previewed instantly.
- Sized to your asset class and budget
- Modular. Adjust anything before pricing
- An Eddy team member calls soon after you submit



Sensors, meters and shutoff, backed by a 24/7 monitoring center.
What stage is the project at?
Pick one to start. We tune every question and the system around it.
New constructionFrom breaking ground to substantial completion.
Existing buildingInstalled in existing buildings with minimal disruption to residents and operations.About two minutes.
Reserve studies under WUCIOA
Washington's Uniform Common Interest Ownership Act (WUCIOA) requires most associations to update a reserve study every year, with a reserve study professional's visual site inspection at least every third year. The requirement already reaches older associations, and from January 1, 2028 the act governs every condominium in the state, whenever it was created. It sets no minimum for funding reserves. Documented water monitoring does not fund a reserve either. It shows the board, the reserve study professional and the insurer that the building's water systems are actively managed.
A team behind every alert
A 3 a.m. alert is one chime. Nobody is awake to hear it.
Fast response is not just the hardware. The technology sees the water in seconds, and the managed service behind it, a monitoring center that calls your team within minutes, turns that into a contained event before it becomes a claim.
Tuned by real events
Built over a decade in operating buildings.
Eddy has been inside buildings since 2014. Sensor placement, alert thresholds and the monitoring-center playbook are tuned by what real water events across our monitored properties keep teaching us.
Built for the building
Sized to how the water system behaves.
Multi-family stacks, commercial towers, hospitality suites, course-of-construction projects. Each water system has its own failure pattern. The coverage map, response chain and shutoff sequence are scoped to the property in front of us, not a template.
Detect, contain, document
Every event leads to a closed incident.
Sensors find where water escaped. Automatic shutoff isolates the affected zone. The 24/7 monitoring center calls your team within minutes and stays on it until it's closed, with a Leak Incident Report on file.
Built for dense multifamily stock
Eddy protects the high-unit-count residential and commercial buildings driving Seattle's growth, with escalation and shutoff handled around the clock by the monitoring center.
Eddy at work in buildings like yours
Multi-family
A drip behind drywall on an upper floor. Caught in seconds, sealed before it migrated.
Vancouver, British Columbia
A concealed leak behind a fan coil on an upper floor looked like nothing from the room. A wireless sensor inside the wall cavity caught the moisture in seconds, and the superintendent sealed it before water could accumulate or migrate to other floors.
- Property manager
- Facility operator
- Asset owner
Multi-family
A slow drip the eye could never catch. Smart metering saw it anyway.
Vancouver, British Columbia
A minor leak on a closed-loop cooling system showed up as continuous low flow on the make-up line, with nothing to see or hear. Eddy's smart metering flagged the abnormal pattern off-hours, and the superintendent isolated the chiller-room leak before it grew into a mechanical event.
- Facility operator
- Property manager
- Asset owner
Multi-family
Two washing-machine events in one week. Both shut off automatically.
Toronto, Ontario
In a purpose-built rental tower protected from day one, two separate washing-machine events were intercepted in a single week. Each time the suite's water valves shut off automatically the moment the sensor triggered, containing both events to single suites.
- Property manager
- Asset owner
- Facility operator
Solutions for every building
Eddy protects every asset type the same way, with monitoring and shutoff tuned to how each building's water system behaves.
Multifamily and condos
Protect every suite and riser across high-rise and mid-rise residential.
Commercial
Keep Class A offices and mixed-use towers dry, floor by floor.
Construction
Cover active sites where water damage is a leading cause of loss.
Hospitality
Guard guest floors and back-of-house without disrupting the stay.
Institutional
Safeguard campuses, hospitals and labs where contents are irreplaceable.
Industrial
Watch process water and facility systems around the clock.
Seattle water leak detection FAQ
Do you serve the Seattle area?
Yes. Eddy protects condo, apartment and commercial buildings across Seattle and the Puget Sound region, including Bellevue, Redmond, Kirkland, Renton, Tacoma and Everett. Eddy's US operations are based in Florida, and every alert is handled by the 24/7 monitoring center in Toronto.
Does the wet climate make leaks harder to spot?
It can hide them. In the rainy season a slow leak behind a wall is easy to mistake for weather damage, and it stays wet long enough to grow mold. Eddy watches flow and the presence of water continuously, so the leak is caught at the source.
Can you protect a newly built apartment tower?
Yes. The same system covers a building from construction through occupancy, catching the early fitting and supply-line failures common in new buildings. Sensor installs need no drywall cuts, so finished suites stay finished.
Our condo association formed before 2018. Does WUCIOA apply to us?
Parts of it already do, including the reserve study requirement and, since January 1, 2026, key meeting rules. From January 1, 2028 the act governs every condominium in Washington, so many older associations need to amend their governing documents. A documented record of how the building's plumbing behaves is useful input for the next reserve study.
Do Seattle rental inspections check for leaks?
Yes. Under the Rental Registration and Inspection Ordinance, rental properties must register and complete an inspection at least once every 5 to 10 years, and the checklist flags leaking pipes and connectors under sinks and in showers and tubs. Continuous monitoring covers the years between inspections.
How Eddy works
What is Eddy Solutions?
Eddy Solutions is managed water leak detection for builders, commercial asset managers and property managers, hospitals, hotels and conference centers, data centers and multifamily residential buildings across the Seattle area. It combines point-of-leak and flow sensors, automatic shutoff, building wireless connectivity, a 24/7 monitoring center and insurance-grade reporting into one program from one vendor, so a leak is detected, contained, escalated and documented without your team running the response.
Eddy monitors 150,000+ active devices across North America and has prevented an estimated $98M (USD) in property damage last year alone. Aon's independent study found Eddy would have positively affected 58% of water-loss claims in commercial real estate.
How do we choose a commercial water leak detection company in the Seattle area?
Look for five things. Sensors where leaks start, not only a meter on the main. Shutoff valves that close on their own when water runs. A staffed monitoring center that calls your team instead of only sending an app alert. Wireless coverage that holds a signal through concrete to mechanical rooms and parking levels. And a documented record of every event that your insurer can read.
Eddy covers all five for buildings across the Seattle area, from a single tower to a full portfolio, with 150,000+ active devices in the field.
What happens after hours?
The 24/7 monitoring center is the after-hours response. Trained operators confirm every alert, escalate per the building's contact list, support the on-call contact, and stay on the line until the water is off and the response is verified.
Will this affect our insurance?
Yes. Eddy Solutions' technology is approved by most insurers across North America to provide deductible or premium savings. Given differences in asset types and building risk profiles, insurance incentives are not uniform. For specific insurance questions related to your property in the Seattle area, please reach out directly to sghanbarian@eddysolutions.com.
How is the system sized for a building, and what does it cost?
Eddy's team walks the building, or reviews the construction drawings, and produces a tiered design matched to the asset class, water systems and insurance program. Our first step is an exploratory call with the relevant stakeholders to understand the problem you are looking to solve. Proposals come from our technical team in 7 days or less.
You can also get started immediately with our Build Your System tool at eddysolutions.com/build-your-system.
Do we have to open walls to install Eddy?
No. Sensor installs need no drywall cuts. Wireless sensors sit where leaks start, at fixtures, appliances, fan coils and the foot of each riser, and Eddy provisions and configures the meters and valves on the lines that need them.
What is smart water leak detection?
Smart water leak detection uses connected sensors and flow meters to watch a building's plumbing in real time, instead of waiting for someone to find a leak. Point-of-leak sensors catch water at the source and smart flow meters spot an abnormal run or a burst riser, and the system can shut the water off automatically or on a remote command. With Eddy, a 24/7 monitoring center acts on every alert, so detection turns into a response, not just a notification.
How is commercial water leak detection different from a home leak detector?
A home leak detector is usually a single sensor that pings an app. Commercial and multifamily leak detection has to cover dozens of risers, suites and mechanical rooms, hold a signal through concrete and steel and produce the documented response insurers expect. Eddy is built for that scale, with building-grade LoRaWAN wireless, point-of-leak and flow coverage across the property, automatic shutoff up to building mains and a managed 24/7 monitoring center.
What is the difference between leak detection and water leak protection?
Leak detection finds the water. Water leak protection stops the loss. Detection on its own is an alert that still needs someone to act on it. Eddy pairs detection with automatic shutoff and a 24/7 monitoring center that escalates the alert and closes the water, so the building is protected, not just alerted.
Does Eddy work for both multifamily and commercial buildings?
Yes. Eddy protects multifamily and condo towers, Class A offices and mixed-use buildings, hospitality, institutional and industrial properties and active construction sites. The same managed program tunes the sensor density, shutoff strategy and reporting to how each building's water system behaves. See the full product suite at eddysolutions.com/products.
Sources and further reading
- City of Seattle, Office of Planning and Community Development, "City of Seattle Market Rate Housing Needs and Supply Analysis", April 23, 2021
- Seattle Department of Construction and Inspections, "Unreinforced Masonry Buildings", accessed October 2026
- Seattle Department of Construction and Inspections, "Unreinforced Masonry Buildings: Frequently Asked Questions", accessed October 2026
- City of Seattle Department of Planning and Development, "URM Survey Report", July 2012
- The Seattle Times, "Seattle sets a housing record, and other sleeper stories from 2024", January 1, 2025
- The Seattle Times, "Water pipes burst amid Seattle-area cold snap; some schools cancel classes", January 15, 2024
- Western Regional Climate Center, "Seattle Tacoma Intl AP, Washington (457473): Period of Record Monthly Climate Summary", accessed October 2026
- Seattle Public Utilities, "Director's Rule CS-325: Leak Adjustment for Retail Customers", effective May 25, 2020
- Washington State Legislature, "RCW 64.90.545: Reserve study", 2026
- Washington State Bar News, "The Impacts of WUCIOA on Community Associations", September 11, 2025
- Washington State Legislature, "Final Bill Report, EHB 1403 (C 201 L 25)", 2025
- Seattle Department of Construction and Inspections, "Rental Registration and Inspection Ordinance: Owners and Managers", accessed October 2026
- Seattle Department of Construction and Inspections, "RRIO Checklist", accessed October 2026