The Insurance Bureau of Canada (IBC) reported in July 2026 that 94% of Canadian homes can now access overland flood insurance, yet external water damage, including overland flooding and sewer backup, still accounted for nearly a quarter of all Canadian home insurance claims in 2025.
Recent flooding across the Niagara region offers brokers a current, concrete example of that gap between what's technically available and what homeowners actually have in place.
An overnight storm in late July dumped heavy rainfall on the region, with areas around Virgil, Ontario receiving 146 millimeters of highly localized rain in a five-hour span, overwhelming drainage systems already under pressure from saturated ground, high lake levels, and full waterways, according to the Town of Niagara-on-the-Lake. Niagara-on-the-Lake and St. Catharines saw significant flooding affecting homes, farms, and vineyards.
IBC has since activated its Virtual Community Assistance Mobile Pavilion (V-CAMP) helpline to provide affected residents with real-time, one-on-one support as they begin the recovery process.
"The recent flooding across the Niagara region has caused significant disruption for many residents, families and businesses," said Amanda Dean, vice president, Ontario and Atlantic, IBC. "As communities begin the recovery process, we encourage anyone who has sustained damage to contact their insurer as soon as possible to start a claim."
Most homeowners don't learn the difference between overland flood coverage and sewer backup coverage until they're standing in a flooded basement wondering why a claim was denied.
Water damage caused by sewer backup is covered only if a policyholder purchased that specific, optional endorsement, subject to policy limits. Overland flood damage, from a body of water such as a river overflowing onto dry land, requires a separate optional endorsement that is widely available in Ontario but often carries coverage limits and may be unavailable in known flood plains or high-risk areas. Coastal flooding and storm surge are generally excluded from home and business policies altogether.
Because these distinctions rarely surface until a claim is filed, localized events like Niagara's give brokers a timely, specific reference point for reviewing coverage gaps with clients before the next storm, rather than after.
The gap is structural, not just a matter of individual homeowner awareness. Canada's long-promised national flood insurance program remains without a launch date, despite Ottawa pledging 450 million dollars over five years toward it, first promised in 2019 and most recently targeted for an April 2026 launch.
The federal government has not confirmed a delivery timeline as of mid-2026.
Meanwhile, the IBC has emphasised that the government's focus should be on reducing flood risk and improving resilience. It is thought that, currently, around 850,000 homes are ineligible for overland flood cover.
Until that program launches, coverage in flood-prone or high-risk zones may remain capped, come with steep deductibles, or be unavailable outright, leaving brokers to manage client expectations without a near-term public backstop to point to.
Flood and water-related insured losses have risen more than 300% over the past 20 years compared with the prior two decades, and now account for roughly 39% of the country's insured catastrophic losses, according to Catastrophe Indices and Quantification Inc. (CatIQ).
Severe weather caused more than 2.4 billion dollars in insured damage in 2025, the tenth-costliest year on record. CatIQ's estimate for 2024 losses has been reported at both 8.5 billion dollars and, in more recent updates, 9.4 billion dollars, the first time losses had surpassed that higher threshold in Canadian history; the discrepancy likely reflects the normal upward revision of catastrophe loss estimates as claims are finalized, and the higher, more recent figure should be treated as the more current one.
Either way, the trajectory suggests overland flood and sewer backup endorsement conversations are becoming a standard part of every homeowner renewal rather than a topic that only comes up after a client's own neighborhood floods.
Niagara is a small, specific instance of a much larger structural problem: flood coverage exists on paper for most Canadians, but it isn't automatically built into their policies, and the public backstop meant to help close that gap for the highest-risk households remains stalled.
Brokers who use current, local events like this one to prompt coverage reviews are better positioned to protect clients, and their own book, than those waiting for the next flood to force the conversation.
