What it means
Insurers write policies for specific risks and price them for those risks only. Flooding can damage many properties at once and cost huge amounts, so it is difficult to include in an ordinary premium.
The water exclusion clause draws a line, leaving flood and similar perils outside the standard cover. The wording usually lists the types of water that are excluded.
These often include flood, surface water, waves, tidal water, overflow of a body of water, water that seeps through the ground and water that backs up through drains or sewers. Which items are listed differs between policies, so two policies can respond differently to the same event.
The clause matters most when a loss has more than one cause. A storm may cause wind damage, which is covered, and flooding, which is excluded, in the same event.
Many policies say that if an excluded cause contributes to the loss, the exclusion may apply, which can lead to disputes about how much of the damage came from which cause. Owners can often reduce the gap.
An endorsement (an add-on that changes the policy) can restore sewer backup cover for an extra premium, and separate flood insurance can be bought from specialist insurers or government-backed schemes in some countries. Businesses in low-lying areas or near rivers should treat this as a core part of their risk planning.
From a finance perspective, the exclusion is an uninsured risk that sits on the balance sheet of the owner. If it is not covered, the company needs enough cash, credit or other protection to rebuild after a flood.
Lenders may also insist on flood cover as a condition of a loan secured on the property. Pricing is the other practical point.
Because the excluded perils are removed, the standard premium is lower than it would be with full water cover, which is part of the reason the clause is so common. Owners should compare the saving in premium with the size of the loss they would be taking on themselves.
In practice
Real-world examples.
Example
A shop owner finds a river has overflowed during heavy rain and soaked her stock. Her standard policy excludes flood, so the claim is declined. She had not bought separate flood cover.
Example
A restaurant is hit by sewer backup after a storm. Its policy has a water exclusion clause but includes an endorsement restoring sewer backup cover up to $25,000. The insurer pays within that sub-limit.
Example
A manufacturer plans to borrow $4,000,000 to buy a riverside building. The lender asks for proof of flood insurance. The company buys a separate flood policy because its main property policy contains a water exclusion clause.
Formula
Calculation
Insurance recovery = Covered loss - Deductible, up to the limit
Uninsured loss = Excluded loss + Deductible
Suppose a storm causes $200,000 of damage to a warehouse. Wind damage of $150,000 is covered, and $50,000 comes from rising surface water, which the clause excludes. The deductible is $5,000. Recovery = 150,000 - 5,000 = $145,000. The uninsured loss is 50,000 + 5,000 = $55,000, which the owner must fund.Case study
Seen in the real world.
Riverbend Furnishings is an illustrative, fictional retailer with a showroom close to a river. It carried a standard commercial property policy and assumed that water damage of any kind was included.
During a period of heavy rain the river overflowed and water entered the showroom, causing $180,000 of damage to stock and fittings. The insurer pointed to the water exclusion clause and declined the claim in full.
In this illustrative story the owner had to fund the loss from savings and a bank loan. The lesson is that the exclusions page of a policy is as important as the cover page, and a business near water should ask directly about flood protection.
Watch out
Common mistakes.
- Assuming that a property policy covers every kind of water damage, when floods and surface water are commonly excluded.
- Reading only the list of covered perils and skipping the exclusions, where the major uninsured risks are stated.
- Believing that a claim will be paid in part when storm damage and flooding occur together, when the exclusion wording can affect the whole loss.
Questions
People also ask.
Can a water exclusion be bought back?
Often yes, as an endorsement or a separate flood policy, usually for an additional premium that reflects the location and the level of risk.
Is a burst pipe affected by the clause?
Usually not, because the exclusion targets natural or external water such as floods and surface water, while sudden escape from plumbing is generally covered.
Why do insurers use the clause?
Flood losses can hit many policyholders at the same time and are costly, so insurers separate the risk so it can be priced and managed on its own.
From the founder's library
Take it further with the book.
Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.
25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.
View the book and save 25%Related