What is the best smart water shutoff system for homes, condos, and multifamily buildings?
Water damage is one of the most common and costly property losses across Canada and the U.S. A small leak can quickly turn into major damage if there’s nothing to stop it. That’s where a smart water shutoff valve, also called an automatic water shutoff, can make a difference. But what makes it the right choice? It depends largely on the property you want to protect.
What is a smart water shutoff system?
A smart water shutoff system combines water leak detection with automatic water shutoff. When a sensor detects water where it shouldn’t be, the system sends an alert and automatically shuts off the water supply. The goal is simple: detect the problem early and limit the damage.
Why automatic shutoff matters
A water leak can happen at any time: during the night, while you’re at work, or when a building is unoccupied. An alert tells you there is a problem. An automatic shutoff can act immediately. That difference can be critical. The strongest protection combines both: sensors to detect the leak and automatic shutoff to stop the water.
The right system depends on your property
There is no one-size-fits-all solution. A homeowner, a condo owner, and a property manager protecting hundreds of units all have different needs.
Single-family homes
For a house, the simplest approach is usually the most effective: protect the entire home at the main water line and add leak sensors in high-risk areas. A whole-home automatic shutoff stops the water even when no one is home.
Good places for sensors include under sinks, near toilets, behind washing machines, near water heaters, and in basements or mechanical rooms.
What to look for in a home system
- Automatic shutoff
- Fast leak detection and alerts
- Easy-to-use controls
- A clear history of system events
- Accessible technical support
Condos
Condo units present a particular challenge: a leak in one unit can quickly affect neighboring units or common areas. This makes unit-level protection essential. An automatic shutoff installed in the unit, combined with strategically placed leak sensors, can detect a problem and stop the water before damage spreads.
For condo buildings, protection shouldn’t stop at the individual unit. Property managers and building operators also need a way to monitor incidents and know when action is required.
What to look for in a condo system
- Automatic shutoff within the unit
- Sensors in kitchens, bathrooms, laundry areas and other high-risk locations
- Reliable connectivity
- Clear alarms and notifications
- Ongoing support
Multifamily and apartment buildings
The challenge becomes greater when you’re protecting dozens or hundreds of units. In this case, the best system is the one that makes the property easy to monitor and manage.
Centralized monitoring brings every unit, common area, and mechanical room into a single view. Property teams can see which unit triggered an alarm, whether the water was shut off, and what happened next.
This allows property teams to respond quickly without having to manage each unit separately.
What to look for in a multifamily system
- Protection at the unit level
- Monitoring of common areas and mechanical spaces
- Centralized oversight
- Reliable connectivity
- Different access levels for property managers, service teams, and other users
- A history of alarms and incidents
- Support when an emergency occurs
Is Wi-Fi enough?
For a single-family home, Wi-Fi may be perfectly adequate.
For condos and multifamily buildings, connectivity can become more complicated. Residents may change their Wi-Fi password, replace their router, or switch Internet providers. A building-wide water protection system should not depend entirely on each resident maintaining their own connection. For larger properties, look for a solution with reliable, managed connectivity and centralized monitoring.
Read the complete Wi-Fi vs. LTE article for more information.
What about power or Internet outages?
This is an important question to ask before choosing a system. Find out what happens if the Internet goes down or the building loses power. Does the system continue to detect leaks? Can it still shut off the water? Will you receive an alert? A good water protection system should be designed with these situations in mind.
Can water protection lower your insurance costs?
Water damage has become the leading cause of home insurance claims in Canada. Allstate Canada reports that water accounted for more than 40% of its home insurance claims between 2021 and 2025, and that claims tied to external water sources rose 94% in 2025 alone.
Insurers have responded in two ways. Many offer premium credits when an automatic shutoff system is installed. Many have also raised the minimum deductible on water losses, in some cases to $2,500. That second change is what makes prevention worth the investment. A 5% credit on a $1,500 premium saves roughly $75 a year. A deductible avoided once is worth $2,500.
NOWA: smart water protection for every type of property
Whether you’re protecting a house, a condo unit, or an entire multifamily building, NOWA offers solutions designed to detect leaks and help prevent water damage.
NOWA 4Se for homes
NOWA 4Se provides whole-home water protection with automatic shutoff, leak detection, and alerts.
It can help protect the areas of your home most vulnerable to water damage, from the kitchen and laundry room to the bathroom and the water heater area.
NOWA 4S + PRESENCE for condos and multifamily buildings
For condos and multifamily properties, NOWA 4S combined with the PRESENCE platform provides a more comprehensive approach. With centralized oversight, teams can know when an incident occurs and respond quickly, without having to monitor every unit individually. The system provides:
- Automatic water shutoff at the unit level
- Leak detection throughout the property
- Reliable hybrid LTE and Wi-Fi connectivity, independent of residents’ Wi-Fi
- Centralized monitoring
- Event history, incident documentation, plus monthly and annual reports for insurers
- Support for property managers and building operators
- Daily sensor self-tests and weekly valve exercising
- Designed, manufactured, and tested in Canada with Canadian data hosting
Looking for the right smart water shutoff system?
Whether you own a home, manage a condo building or oversee a multifamily property, NOWA can help you determine the right level of protection for your property.
Find a NOWA certified installer in your area for a personalized recommendation.
FAQ
Are smart water shutoff systems worth it?
For many homeowners and property managers, yes. A smart water shutoff system can detect leaks early, alert you to a problem, and automatically stop the water before a leak causes extensive damage.
Do I still need leak sensors if I have an automatic water shutoff?
Yes. Automatic shutoff and leak sensors work together. Sensors detect water where it shouldn’t be, while the shutoff can stop the water supply to help limit the damage.
Can a smart water shutoff protect a condo unit?
Yes. A unit-level automatic shutoff combined with strategically placed leak sensors can help protect the unit and reduce the risk of water damage spreading to neighboring units.
Does a smart water shutoff require Wi-Fi?
Not necessarily. Wi-Fi can work well in a single-family home, but condos and multifamily buildings may benefit from systems with more reliable, managed connectivity.
Can a smart water shutoff reduce my insurance costs?
Some insurers offer incentives or premium reductions for water damage prevention systems. Availability varies by insurer, location, and property type.
