Eight causes of water damage, each read against the ISO specimen homeowners form, with what to photograph and what to look up in your own policy.
Flood is separatefrom a homeowners policyInsurance Information Institute, “Spotlight on: Flood insurance”, retrieved September 29, 2026: there is no coverage for flooding in standard homeowners or renters policies.
Whether water damage is covered depends on the cause, your policy and your state.
On the ISO specimen HO-3, a sudden burst pipe or appliance leak is a named peril (accidental discharge). Flood, sewer backup, sump overflow and groundwater are excluded, and slow leaks can fall under the wear and rot exclusion. Flood needs a separate NFIP or private policy. Only your insurer decides a claim.
What caused the water?
Read against one specimen form, not your policy. Nothing is stored or emailed.
A reading of one specimen form, not a coverage determination. HyreRestore is not an insurer and does not adjust claims.
Coverage turns on the cause, not on the damage
Two houses with the same soaked floor can get different answers. The difference is what caused the water and how fast it arrived.
A homeowners policy does not insure wet floors. It responds to perils, meaning causes, minus its exclusions. So the adjuster is asking what caused the water, and whether it happened suddenly, not how bad the room looks.
Sudden against gradual. A supply line that bursts at 3 a.m. is an accidental discharge, a named peril on the specimen HO-3. The same water from a fitting that wept for eight months can fall under the exclusion for wear, deterioration, rust and rot.
The result people find hardest. The slow leak that did more damage can be the one that is not covered, while the overnight burst is. It is not a judgment on how much you lost. It is the line the form draws between an accident and upkeep.
Cause by cause: what the specimen HO-3 says
The ISO specimen Homeowners 3 form (HO 00 03 04 91). Your insurer may use a later edition or its own form, endorsements change the answer, and state law varies.
What happened
On the specimen HO-3
The question that decides it
Supply line or pipe bursts
Covered peril: accidental discharge from a plumbing system. The failed pipe itself is not paid for.
Was it sudden? A pipe that split reads differently from one with years of corrosion and staining.
Water heater bursts
Covered peril: sudden tearing apart or cracking of an appliance for heating water
Whether it was sudden, and what the form says about the heater itself.
Washer or dishwasher hose lets go
Covered peril if the water escaped from within the appliance
How long it had been leaking. A crusted, stained fitting suggests weeks.
Rain comes in during a storm
Covered only if wind or hail first made an opening in the roof or a wall
Whether the storm made the opening, or the roof was already failing.
Slow leak under a sink or behind a shower
Exclusion for wear, deterioration, rust, mold and rot can apply
How long, and how your own form words seepage and leakage.
Flood or surface water
Excluded, whether or not driven by wind
A separate NFIP or private flood policy; an NFIP policy has a 30-day wait.
Groundwater through the foundation
Excluded: water below the surface of the ground
Drainage first. A flood policy may respond where surface water is involved.
Sewer or drain backup
Excluded: water that backs up through sewers or drains
Whether you added a water backup endorsement, and its limit.
Sump pump overflows
Excluded: overflow from a sump; a sump is not part of the plumbing system on this form
Same: the endorsement and its limit.
Pipe freezes and bursts
Covered peril, with a condition
If the house was vacant or unoccupied, whether you kept the heat on or shut off and drained the water.
Mold after a covered water loss
Depends on the form: mold is listed with wear and rot in the specimen’s exclusions
Whether the water loss was covered, how fast drying started (EPA’s 24–48 hours), and whether your policy caps mold.
The freeze risk check covers the heat-and-occupancy condition on the freeze row. This table is a reading of one specimen form. Your policy is the authority.
Flood is a separate policy with a waiting period
You cannot buy it when the forecast turns. Check whether you have it before anything happens.
The rule. The Insurance Information Institute says there is no coverage for flooding in standard homeowners or renters policies. Flood cover comes from the National Flood Insurance Program or a private flood insurer.
The wait. FEMA: “Plan ahead as there is typically a 30-day waiting period for an NFIP policy to go into effect, unless the coverage is mandated, it is purchased as required by a government backed lender, or is related to a community flood map change.”
That is 30 days, so by the time a storm is on the forecast, whether you are covered was decided a month earlier.
Where the line falls. Rain through a hole the wind tore in the roof is a windstorm question on the homeowners policy. The same storm’s water coming across the ground and under the door is flood. One night can produce both, and the split between them can become the dispute.
HyreRestore does not sell insurance and is paid nothing by any insurer or agent. This section is here because the waiting period makes flood cover useless to learn about afterwards.
Protect the property and keep the evidence: both, the same day
The specimen HO-3 lists both among your “Duties After Loss”: give prompt notice, and protect the property from further damage.
The trap. People hear “do not touch anything until the adjuster sees it”. Meanwhile the form asks you to prevent further damage, and EPA’s 24–48 hour drying window is running. Waiting days for an appointment can turn a drying job into a mold job.
They do not conflict. You must prevent further damage. You are not asked to destroy evidence. The Insurance Information Institute puts the order plainly: photograph or video the damage, then take reasonable steps to protect the property. Keep receipts for what you spend.
In practice. Wide and close photos of every room before anything moves. Keep the failed part: the hose, the fitting, the split section of pipe. Keep a piece of removed material where you can. Then stop the water, extract and start drying.
Get the water category written down on day one. IICRC S500 sorts water into Category 1, 2 and 3 by contamination, and clean water that sits can become dirtier. A record made on day one shows what the water was before it changed.
Six things to look up in your own policy now
Easier at the kitchen table than at 11 p.m. with water coming through a ceiling.
Whether you have flood cover at all
A separate NFIP or private policy. If you want one, the NFIP’s 30-day wait is the one item that cannot be fixed after the fact.
Whether you have a water backup endorsement, and its limit
The specimen form excludes sewer and drain backup and sump overflow. An endorsement can add it back with its own limit.
Whether mold is capped
Look for a mold limit or exclusion in the form and endorsements. It can apply even after a covered water loss.
Your deductible, and any separate one by peril
Some policies carry a separate wind, hail or hurricane deductible, which can be a percentage of the dwelling limit.
Replacement cost or actual cash value
On an ACV policy depreciation comes off and is not paid back. On RCV it can be recovered after the work is done.
The vacancy and unoccupied wording
The freeze peril carries a heat-or-drain condition while the house is vacant or unoccupied. It matters for second homes and long trips.
Policy words that mean something specific
Peril, ensuing loss, endorsement and proof of loss carry meanings in a homeowners policy that differ from everyday use.
Peril
The cause of loss. A policy answers to perils, not to damage, which is why “how did it happen” comes first in a claim.
HO-3
The Homeowners 3 “Special Form”. It covers the dwelling against direct physical loss unless excluded, and personal property against named perils.
Accidental discharge
The named peril for water escaping from a plumbing, heating or cooling system or a household appliance. The form does not pay to repair the part that failed.
Ensuing loss
Damage that follows an excluded cause but is itself covered. The specimen form covers ensuing loss not otherwise excluded.
Endorsement
An addition or change to the base policy. Water backup cover is added this way, so its absence says nothing until you need it.
Declarations page
The summary sheet listing your limits, deductibles and endorsements. It is not the policy; the form and endorsements are.
ACV and RCV
Actual cash value pays replacement cost minus depreciation. Replacement cost value can pay the withheld depreciation after the repair is done and invoiced.
Proof of loss
A signed, sworn statement of the claim. If your insurer asks for one, note the deadline it gives.
What this tool cannot do
The coverage checker cannot read your policy. It reads one specimen form. Insurers use their own editions, endorsements change the answer, and a declarations page is a summary, not the contract.
It cannot predict a decision or a payout. Your insurer decides on the evidence, and that decision can be questioned, supplemented and appealed.
It does not know your state. Insurance is regulated by each state, and state law can change notice periods and what a policy must include. If a decision looks wrong, your state department of insurance takes consumer complaints at no charge.
It is not legal advice. HyreRestore is not an insurer, agent, broker or public adjuster, is paid by none of them, and has no stake in your claim.
Questions this checker answers
Does homeowners insurance cover a burst pipe?
On the specimen HO-3 it is a named peril, accidental discharge from a plumbing system, so the water damage it causes can be covered. The form does not pay to fix the pipe itself. Your policy, endorsements and state law decide the claim.
Is flood damage covered by homeowners insurance?
No. The Insurance Information Institute says standard homeowners and renters policies do not cover flooding. Flood cover is a separate NFIP or private policy, and an NFIP policy has a 30-day wait before it takes effect, with a few exceptions such as a lender requirement.
Is sewer backup covered?
Not on the base specimen HO-3, which excludes water that backs up through sewers or drains or overflows from a sump. A water backup endorsement can add it, with its own limit. Check your declarations page.
Why was my slow leak denied?
Because the specimen form excludes wear, deterioration, rust, mold and rot, and damage built up over months can fall there. The same water released suddenly would be accidental discharge. Ask the insurer which policy wording it relied on, in writing.
Is rain coming in during a storm covered?
On the specimen HO-3, only if wind or hail first made an opening in the roof or a wall and the rain came through it. Photograph the opening. Rain through a worn roof with no storm opening is not a windstorm loss.
Can I start drying before the adjuster comes?
Yes. The HO-3 “Duties After Loss” ask you to protect the property from further damage. Photograph everything first, keep the failed part and your receipts, then dry. Hiring a restorer does not mean signing over your benefits.
Where do I complain about a coverage decision?
Ask the insurer to explain the decision and the policy wording in writing first. If it still looks wrong, your state department of insurance takes consumer complaints at no charge. Insurance is regulated state by state.
Sources and methodology
Figures dated September 29, 2026. Last reviewed .
Homeowners 3, Special Form (HO 00 03 04 91, specimen) (Insurance Services Office, via Heritage Property & Casualty, retrieved September 29, 2026). Accidental discharge, windstorm opening rule, freezing condition, water damage exclusion (flood, backup, sump, groundwater), wear and rot exclusion, Duties After Loss. Insurers may use later editions.
Spotlight on: Flood insurance (Insurance Information Institute, retrieved September 29, 2026). No flood coverage in standard homeowners or renters policies.
Flood Insurance (FEMA, retrieved September 5, 2026). The 30-day NFIP waiting period and its exceptions. Returned 403 to automated retrieval on 2026-09-29; quoted as read on 2026-09-05.
How to file a homeowners claim (Insurance Information Institute, retrieved September 29, 2026). Photograph, then protect the property; keep receipts.