Are you covered for water damage? A Canadian homeowner’s guide to water-related risks

Spring snowmelt. Summer storms. These are part of life in Canada, and understanding your home insurance coverage helps you stay prepared and protected.

Many people use the word “flood” to describe any situation where water enters their home. However, in insurance policies, water damage is categorized into specific types, and coverage depends on how the water entered your home. Understanding these distinctions is essential to knowing whether you’re protected, before damage happens.

Only about half of Canadian homeowners clearly understand what their home insurance covers when it comes to water damage. This guide breaks down the different types of water related risks, explains what standard home insurance typically covers, and highlights where optional endorsements may be needed.

Why understanding water-related risk matters

Flooding is Canada's most costly natural disaster, causing an average of over $2 billion in direct damage to homes, property, and infrastructure each year. 

Changing weather patterns and aging infrastructure are making water-related damage an increasingly common concern for homeowners nationwide. According to the Insurance Bureau of Canada, over 35 catastrophic flooding events have occurred in the last decade, with each causing insured losses exceeding $30 million. Water damage claims now account for half of all home insurance claims in Canada.

Understanding your flood risk is the first step toward protection. When you know what you're facing, you can take practical steps to safeguard your home and ensure you have the right coverage in place.

Understanding your flood zone risk

Your home’s risk to overland water depends on more than just how close you are to a lake or river. Even homes far from major water sources can be at risk of flooding during heavy rain or fast snowmelt.

Here's how to assess your property's risk:

• Check official flood maps: Visit FloodSmart Canada or the Natural Resources Canada (NRCan) flood map inventory to see if your property is in a flood-prone area. Many municipalities also provide flood hazard maps showing potential overland flooding zones in your community.
• Understand flood probability: A “1-in-100-year flood” does not mean a flood happens only once every 100 years. It means there is a 1% chance of that level of flooding in any year. Over a 25-year mortgage, this risk increases.
• Evaluate property-specific factors: Think about how close your home is to water, the topography of your land, and how water drains around your property. Homes at the bottom of slopes or in low areas have higher risks, even if they are far from large rivers or lakes.
• Consider existing protections: Features like sump pumps and proper grading can reduce your risk. Your insurance provider will want to know about these precautions when determining your coverage options.

Knowing your risk of overland water, sewer backup, or damage resulting from groundwater can help you better protect your home.

What standard home insurance typically covers

Water related insurance can get confusing for many homeowners, so let's break it down.

What standard home insurance typically covers

A basic home insurance policy usually covers sudden and accidental water damage, such as:

• Burst pipes (freezing-related bursts may have restrictions).
• Plumbing system rupture.
• Leaking water heaters, dishwashers, or other appliances.
• Roof leaks caused by storms or ice dams.
• Overflowing sinks, toilets, or bathtubs.

What standard home insurance doesn't cover

Standard policies typically exclude damage from external water sources, such as:

• Sewer backup (when municipal systems overflow into your home).
• Overland water (when rivers, lakes, or ponds overflow).
• Water from heavy rainfall or snowmelt pooling around or seeping into your home.
• Coastal flooding and storm surges.

These exclusions exist because flood risk varies dramatically by location, and insurance companies price these risks separately. Instead, you can purchase additional coverage to protect against specific water-related risks.

Protecting your home from sewer backup

Sewer backup forces wastewater up through basement drains, toilets, or sinks and into your home. The most common causes? Heavy rainfall or snowmelt that overwhelms city systems, tree roots that damage pipes, or debris like grease and wet wipes that create blockages. The cleanup is both unpleasant and expensive.

How sewer backup coverage works:

Sewer backup coverage is optional and must be added to your home insurance policy as a separate coverage. Insurance companies set the price based on your property’s risk, such as how close you are to the city system and if your home is at a low point where water collects.

This coverage usually pays for professional cleanup and repairs to your home, as well as replacing damaged belongings. 

Why you need it:

Aging infrastructure and stronger storms have made sewer backup more common. Even new city systems can be overwhelmed by sudden heavy rain or snowmelt. If your home is at the bottom of a slope or you have noticed slow drains during storms, your risk is higher.

Without this coverage, you'll pay for all cleanup, repairs, and replacement costs yourself. 

Protecting your home from overland water

Overland water coverage, sometimes called inland flood insurance, protects you if freshwater from outside enters your home.

This coverage applies when:

• Rivers, lakes, ponds, or other waterways overflow onto your property.
• Heavy rainfall creates surface water that seeps into your home through windows, doors, or walls.
• Snowmelt accumulates faster than the ground can absorb it.

How overland water coverage works:

Overland water coverage is optional and must be added to your home insurance policy as a separate endorsement. Insurance companies set your premium based on your property’s flood risk. If you live in a high-risk area, your premium will likely be higher. In some very high-risk zones, like floodplains, this coverage may not be available. Most overland water policies provide coverage only for freshwater, excluding damage from coastal flooding and storm surges.

Why you need it:

Overland water can happen even if you do not live near a large body of water. Heavy storms, a quick spring thaw, or drainage problems can cause water-related risks in places that have never had it before. As the weather becomes less predictable, this coverage is becoming more important.

Review your home insurance coverage before your next renewal date

Now that you understand what standard coverage includes and what it doesn't, it's time to review your policy.

Questions to ask your insurance broker:

• Do I currently have sewer backup coverage?
• Do I currently have overland water coverage?
• What are my deductibles for each type of water damage?
• Are there coverage limits I should be aware of?
• Would installing preventive measures like a sump pump or backwater valve lower my premiums?
• Does my policy cover additional living expenses if I need to evacuate due to a water-related event?
• Is there a waiting period before coverage begins?
• What's the claims process for water damage?
• Do I need both sewer backup AND overland water coverage?
• Are there any exclusions specific to my property or area?
• What preventive maintenance is required to maintain coverage?

When to update your coverage:

Check your policy every year, and think about updating your coverage when:

• You move to a new home (especially if it's in a different flood zone).
• Your municipality updates its flood maps.
• You complete renovations or improvements that increase your home's value.
• You notice changes in drainage patterns around your property.
• Severe weather events become more frequent in your area.

Having the right coverage helps you feel confident that your home and belongings are protected, no matter what the weather brings.

Find the protection your home needs

Understanding your water-related damage risk and insurance options puts you in control of protecting your home and your peace of mind. 

Start by assessing your property's flood risk using available flood maps and resources. Then review your current policy to identify any gaps in coverage. In case of a flood, follow these steps.

Ready to review your coverage for water damage?

At Orbit Insurance Services, we help Canadian homeowners understand their water damage protection options and find coverage that fits their needs. Whether you are reviewing your current policy or looking into overland water and sewer backup coverage, we are here to answer your questions and offer clear, helpful advice. Contact an Orbit insurance broker today to review your policy and ensure you have the right protection in place.

Request a home insurance quote today if you’re not an Orbit customer, we’ll help you find the right coverage for your home.

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