Guides
Is water damage covered by homeowners insurance?
Sudden water from a burst pipe or failed appliance is usually covered; flood, sewer backup, sump overflow and slow leaks usually are not. How to tell which.
It depends on where the water came from, not on how much of it there is. A standard homeowners policy generally covers water that escapes suddenly and accidentally from inside your plumbing, heating or air conditioning system or from a household appliance. It generally does not cover flood or surface water, water that backs up through a drain or sewer, water that overflows from a sump pump, groundwater seeping through a foundation, or damage from a leak that went on for weeks or months. Identify the source first, because the source decides which part of your policy, if any, answers the claim.
The source of the water decides the outcome
Adjusters sort water losses by origin, and so should you. The table describes the ISO HO-3 (form HO 00 03, 2011 edition), the standard that many insurers' own forms follow loosely. Your policy, its endorsements and your state's amendatory endorsement control.
| Where the water came from (hypothetical examples) | Standard HO-3 | What can fill the gap |
|---|---|---|
| A toilet supply line splits, a dishwasher hose bursts, a water heater tank fails | Generally covered, except the failed part itself | Equipment breakdown or a warranty for the part |
| A pinhole leak in a copper pipe drips inside a wall for months | Often limited or denied as wear, corrosion or gradual damage | Nothing standard; see sudden vs gradual water damage: where insurers draw the line |
| A pipe freezes and bursts in a cold snap | Covered if you used reasonable care to heat the house or drain the system | See burst and frozen pipes: what's covered |
| Wind or hail opens the roof and rain pours in | Generally covered | See is a roof leak covered by homeowners insurance? |
| A worn roof lets rain in around a vent | Disputed; the worn roof is not covered, and the interior damage is argued | Depends on the form |
| Sewer line or floor drain backs up | Excluded | Water backup endorsement; see water backup and sewer backup coverage |
| A sump pump fails or overflows | Excluded | Water backup and sump endorsement; see sump pump failure and basement flooding |
| Groundwater seeps through the foundation or slab | Excluded | Usually nothing; a flood policy only if the cause is a flood |
| Creek overflows, storm surge, overland flooding | Excluded | Flood policy; see does homeowners insurance cover flooding? |
What the standard form says
For the building (Coverage A, dwelling, and Coverage B, other structures), the HO-3 is an open-perils policy. It insures "against direct physical loss" unless something excludes it. The water coverage comes from an exception. The form says that, unless the loss is otherwise excluded, it covers loss to the building "resulting from an accidental discharge or overflow of water or steam" from within a plumbing, heating, air conditioning or automatic fire protective sprinkler system, or a household appliance, on the premises. It also covers the cost to tear out and replace part of the building when that is necessary to reach and repair the system. And then the sentence that surprises people: "We do not cover loss to the system or appliance from which this water or steam escaped." The leak damage is covered; the pipe or machine that leaked is not.
For belongings (Coverage C, personal property), the form is named-perils. "Accidental discharge or overflow of water or steam" is one of the named perils, with the same limits: it does not include loss to the system or appliance itself, loss caused by freezing (except under the separate freezing peril), or mold unless it is hidden inside walls, ceilings or floors. The peril also does not include a discharge that occurs off your property, even though it damages your house.
The form defines its terms narrowly. In both places it says that a plumbing system or household appliance "does not include a sump, sump pump or related equipment or a roof drain, gutter, downspout or similar fixtures or equipment." That one sentence is why a failed sump pump and an overflowing gutter are not treated like a failed water heater. The named perils vs open perils coverage guide explains why the two parts of the policy work differently.
The exclusions that matter most
Section I - Exclusion A.3 in the 2011 form excludes four kinds of water, "regardless of any other cause or event contributing concurrently or in any sequence to the loss":
- Flood, surface water, waves, tides, overflow of any body of water and storm surge, whether or not driven by wind.
- Water that backs up through sewers or drains, or that overflows or is discharged from a sump, sump pump or related equipment.
- Water below the surface of the ground, including water that exerts pressure on, or seeps, leaks or flows through a building, driveway, patio, foundation, swimming pool or other structure.
- Waterborne material carried by any of those waters.
The words "regardless of any other cause" are the anti-concurrent causation language covered in anti-concurrent causation clauses explained. If a flood and a failed pipe both contribute to a loss, the flood exclusion can swallow the claim.
Two more provisions shape water claims. The form excludes loss from "neglect," meaning failing to use all reasonable means to save and preserve property at and after a loss. And it excludes faulty or defective maintenance, workmanship or materials, though any ensuing loss not otherwise excluded is covered. Those clauses are where a gradual leak or an ignored drip tends to end up, and they are why a claim can turn on a plumber's written diagnosis.
A worked example (hypothetical)
Say the supply line to an upstairs toilet splits while you are at work. By the time you get home, water has come through the downstairs ceiling and soaked the kitchen floor. The restoration company's estimate comes to $18,000 for drying, tearing out wet drywall and flooring, and rebuilding, plus $4,000 in ruined furniture and rugs. Your all-other-perils deductible is $1,000.
- The plumber's repair of the supply line is yours; the system that leaked is not covered.
- The tear-out of the bathroom floor needed to reach the line is covered.
- The ceiling, flooring and cabinet damage is covered under Coverage A, less the deductible.
- The furniture is covered under Coverage C. The standard form pays personal property at actual cash value, so a five-year-old sofa is paid after depreciation unless you bought replacement cost on contents. See actual cash value.
- If the kitchen is unusable during repairs, loss of use coverage pays the added living cost; see loss of use and additional living expenses.
Now change one fact. The same $18,000 of damage arrives because a heavy storm overwhelms the municipal sewer and water comes up through the basement floor drain. The form's backup exclusion applies, and unless you carry a water backup endorsement, the policy pays nothing for the water. Same damage, same deductible, opposite result.
How common these claims are
Water is one of the most frequent and costly causes of homeowners claims. According to the Insurance Information Institute's tables of ISO data, water damage and freezing accounted for 22.6% of homeowners insurance losses in 2023, second to wind and hail (42.5%) and just ahead of fire and lightning (21.6%), with 1.50 claims per 100 insured house-years and an average paid severity of $15,400 over 2019 through 2023 (III facts and statistics, read October 2026). Those figures include mold damage where covered, and they exclude Alaska, Texas and Puerto Rico. A claim of that size sits well above most deductibles, which is why the source question is worth getting right on day one.
When you find water: a short sequence
- Stop the source if you safely can. Shut off the main water supply or the supply to the appliance. If the water is rising from a drain or from outside, do not wade in until the electricity is off.
- Record the scene before you clean. Photograph or video the water line, the failed part and the damaged rooms. Keep the failed part if you can. See documenting damage: photos, video and receipts.
- Mitigate. The policy requires reasonable steps to protect the property, and covered reasonable repair costs are part of the claim. Keep receipts. See reasonable repairs: what you can fix before the adjuster comes.
- Report promptly. Say what you know about the source and do not guess at the cause. "A pipe failed" and "the pipe has been leaking for a while" lead down different paths.
- Get the cause in writing. Ask the plumber to put the failure point, and what caused it, in the invoice or a short note.
- Ask what endorsements you have. Water backup, service line and equipment breakdown coverage each respond to a different slice of water damage. They appear on the declarations page, not in the base form.
The the first 48 hours after damage to your home guide goes step by step through the first days.
Prevention that also protects the claim
Insurers expect the water system to be maintained, and a claim file that shows it is easier to pay. Know where the main shutoff is, replace braided supply lines and rubber hoses on a schedule, and service the water heater. Shutoff valves and leak sensors can limit the size of a loss and sometimes earn a discount; see water leak sensors and shutoff valves: discounts and value and water damage prevention: a homeowner's checklist.
Key takeaways
- Sudden, accidental discharge from plumbing, heating, air conditioning, sprinkler systems and household appliances is generally covered; the part that failed is not.
- Flood, surface water, sewer or drain backup, sump overflow and groundwater seepage are excluded from the standard HO-3, and each needs its own coverage or flood policy.
- Slow leaks, corrosion and neglect are where most water denials happen, so cause and timing carry the claim.
- Water damage and freezing made up 22.6% of homeowners insurance losses in 2023, per III and ISO data, so check your endorsements before a loss, not after.
- Read your own declarations page and policy; insurers' forms and state amendatory endorsements differ from the ISO standard described here.