Water leak detection in San Francisco for commercial and multifamily buildings

Managed leak detection, 24/7 monitoring and automatic shutoff for condos, offices and commercial buildings across the Bay Area.

San Francisco skyline
150,000+
active smart devices in the field
$2.26M
in water costs saved in 2025
24/7
monitoring center

Why San Francisco buildings carry water risk

San Francisco has the largest concentration of older housing in California, and by the city's 2014 count almost half its homes were built before 1940. One unit in five sits in a two- to four-unit building, and the wood-frame soft-story apartments covered by the city's 2013 retrofit ordinance cluster in the Mission, Western Addition, Richmond, North Beach and the Marina. Galvanized steel supply pipe, common before the 1960s, corrodes from the inside once its zinc is gone. In stacked flats, one failed fitting soaks every unit below.

The newer city is vertical. Buildings of 20 or more units now hold nearly two in five of San Francisco's homes, and in Mission Bay, the Financial District and South Beach almost every unit is in one. New developments of 100,000 gross square feet or more must also install onsite systems that collect, treat and reuse graywater or blackwater, a second water system inside the building. New plumbing fails early too, at push-fit fittings, appliance connections and condensate lines.

Cost and weather raise the stakes. SFPUC raised water and sewer rates again on July 1, 2026, and apartment buildings pay sewer on nearly all the water they use, so a hidden leak is billed twice. Storms test roofs, drains and below-grade rooms. Between December 26, 2022 and January 17, 2023, downtown got 17.64 inches of rain. Eddy's 24/7 monitoring center in Toronto confirms every alert and can close a valve remotely when the building's response plan calls for it.

Where leaks start in San Francisco buildings

Prewar flats on aging supply pipe

Most of the city's homes are more than 50 years old, and galvanized steel, common before the 1960s, corrodes from the inside until it leaks. In stacked flats, a slow leak upstairs reaches every unit below. Point-of-leak sensors install with no drywall cuts.

Ground movement strains pipe joints

Earthquakes stress joints, fittings and overhead pipe. In the 2001 Nisqually earthquake in Washington, water from broken overhead pipes caused most of the damage to building contents. Automatic shutoff closes the water when a line lets go after the shaking.

Water and sewer rates climbing fast

SFPUC raised water and sewer rates on July 1, 2026, with more increases approved for 2027. Apartment sewer charges assume nearly all metered water goes down the drain, so a leak is billed twice. Flow monitoring finds the quiet waste.

New towers carry more plumbing

Buildings of 20 or more units now hold nearly two in five of the city's homes, and new developments of 100,000 gross square feet or more must add onsite water reuse systems. Early failures cluster at push-fit fittings and appliance connections. The same system covers a building from construction through occupancy.

Smart leak detection in San Francisco

A smart water leak detection system pairs wireless sensors and smart meters with automatic shutoff, so a San Francisco 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 San Francisco building.

Bay Area water is expensive and tightly managed, and in San Francisco ground movement stresses joints and connections over time. 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.

Cutaway model of an occupied mid-rise showing Eddy sensors in the suites and risers, meters and shutoff valves in the basement mechanical room, and the rooftop gateway linked through Eddy's cloud to the 24/7 monitoring centerCutaway model of an occupied mid-rise showing Eddy sensors in the suites and risers, meters and shutoff valves in the basement mechanical room, and the rooftop gateway linked through Eddy's cloud to the 24/7 monitoring center

Occupied building · Business hours

Drag to turn the building. Select a label, or run a leak through the system.

Interactive 3D section of an occupied mid-rise, from the domestic main in the basement to the suites, risers and rooftop mechanical. It shows where Eddy places its sensors, smart meters, shutoff valves and LoRaWAN gateway, and how alerts travel through Eddy's cloud to the 24/7 monitoring center.

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
  1. A washing machine supply hose bursts in a suite upstairs.
  2. Eddy H2O under the washer detects water and sends the alert over LoRaWAN.
  3. The building's gateway relays it. Your team and the 24/7 monitoring center are alerted at the same time.
  4. A shutoff rule closes the suite's Eddy IQ valve. The water stops at the source.
  5. 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 San Francisco buildings, from the mechanical room to a laundry hose, so a leak is caught at the source and shut off before it spreads.

Eddy smart leak detection in a building mechanical rooms setting

Mechanical rooms

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

Eddy smart leak detection in a building hvac and fan coils setting

HVAC and fan coils

Heat exchangers and condensate lines that drip behind walls and ceilings.

Eddy smart leak detection in a building kitchens setting

Kitchens

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

Eddy smart leak detection in a building bathrooms setting

Bathrooms

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

Eddy smart leak detection in a building laundry setting

Laundry

Washer hoses and laundry connections, a top source of overnight leaks.

Detect fast, act fast

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.

One leak, two outcomesMinutes since the leak started
0 minmin elapsed
Eddy containedUnmonitored
Eddy isolatingminute 2
Without monitoringrunning · 0 min
min 101 hr2 hr4 hr6 hr8 hr

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.

SB 900 and California condo reserve studies

Since January 1, 2025, SB 900 has required a California condo association to start the repair process within 14 days when gas, heat, water or electrical service that begins in the common area is interrupted, even where the work reaches into units. It also made water service lines the association maintains a major component in its reserve study, which generally needs a visual inspection at least every three years. Monitoring does not fund a reserve. Its documented event history shows the board and reserve specialist how those lines actually behave.

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 high-value Bay Area stock

Eddy protects the kind of high-value condos and Class A office space the Bay Area is built on, with escalation and shutoff handled around the clock by the monitoring center.

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.

San Francisco water leak detection FAQ

  • Do you serve the San Francisco Bay Area?

    Yes. Eddy protects commercial and multifamily buildings across San Francisco and the wider Bay Area, including Oakland, Berkeley, Emeryville, Daly City, South San Francisco, San Mateo, Redwood City, Palo Alto and San Jose.

  • Does Eddy account for seismic risk?

    Continuous monitoring suits seismic markets well. The city's 2013 soft-story ordinance required retrofits of thousands of wood-frame buildings, but a retrofit strengthens the frame, not the supply lines. Eddy watches flow and the presence of water around the clock and can isolate a line automatically when a leak appears after ground movement.

  • Can Eddy support California submetering?

    SB 7 requires the water to each unit in multiunit and mixed-use buildings that applied for service after January 1, 2018 to be metered or submetered, and SFPUC requires those submeters to be legal-for-trade devices registered with the County Sealer. Eddy smart metering measures water use at the unit level to support resident billing, and its flow monitoring watches the same water for leaks and can shut it off automatically or on a remote command.

  • Does our SB 326 balcony inspection cover the plumbing?

    No. SB 326 makes condo associations with three or more attached units inspect wood-supported balconies, decks, stairways and walkways more than six feet up, including their waterproofing, at least every nine years, with the first round due January 1, 2025. The report feeds the reserve study but does not look at the supply lines, valves or fittings inside the building, which is the water Eddy's sensors and flow monitoring cover.

  • Can sensors catch a storm backup in our garage?

    Yes, they flag the water. Most of the city drains to a combined sewer, and in extreme storms SFPUC says buildings in low-lying areas can see backups through their own plumbing fixtures, which backwater valves help prevent. Point-of-leak sensors in basements, garages and mechanical rooms detect the water, and the monitoring center calls the building's contacts through the escalation protocol.

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 San Francisco Bay 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 San Francisco Bay 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 San Francisco Bay 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 San Francisco Bay 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

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