Does a BOP cover sewer backup?

Not on the base form. Water backing up from a sewer, drain, sump, or sump pump is excluded. Some carriers sell a water backup endorsement; ask before you bind, not after the drain.

Is a burst pipe covered by business insurance?

A sudden pipe failure is the classic covered water claim, including tear-out costs to reach the failed line. The defective pipe or appliance itself is not paid, and freezing losses require that you maintained heat or drained the system.

Does a BOP cover a roof leak?

Only when a covered peril first damages the roof and rain enters through that damage. Rain through worn-out roofing is not covered, and any leak running 14 days or more hits the continuous-seepage exclusion.

Does a BOP Cover Water Damage? Where the Form Draws the Line

Yes for the burst pipe, no for the flood. A standard BOP pays for water damage that arrives suddenly from a covered cause: a failed supply line, a split water heater, an upstairs tenant's overflow. It excludes flood, storm surge, sewer and drain backup, groundwater seepage, and any leak that ran for 14 days or more. Those carve-outs come from the ISO businessowners form itself, BP 00 03, not from carrier fine print. Beaconcover is not a licensed broker; we read the form's wording and route you to carriers.

What the water exclusion takes away

The property half of a business owner's policy is written on an open-perils basis, and then a single exclusion takes most water perils back. The Water exclusion in BP 00 03 (07 13 edition) strikes four things: flood in every form the drafters could name ("flood, surface water, waves (including tidal wave and tsunami), tides, tidal water", expressly "including storm surge"); mudslide or mudflow; water that "backs up or overflows or is otherwise discharged from a sewer, drain, sump, sump pump or related equipment"; and groundwater "pressing on, or flowing or seeping through" foundations, basement floors, doors and windows ^{[ISO BP 00 03 07 13 businessowners form (specimen), 2026-08]}.

The exclusion sits under the form's anti-concurrent causation lead-in: excluded water damage stays excluded "regardless of any other cause or event that contributes concurrently or in any sequence to the loss". That sentence decides the sump-pump argument before it starts. A storm cuts the power, the sump quits, the basement fills. The storm is a covered peril; the backup wording wins anyway.

One carve-back matters. If excluded water "results in fire, explosion or sprinkler leakage", the form pays for that resulting damage. Floodwater shorts a panel and the fire guts a stockroom: the fire damage is paid, the water damage is not.

The water exclusion also has siblings (earth movement, ordinance enforcement, utility failure) cataloged at /coverage/exclusions-typical/.

The burst pipe is the covered case

Because the form's coverage grant is "direct physical loss unless the loss is excluded or limited" (BP 00 03, Section I), a sudden plumbing failure needs no named peril to be covered. It only needs to avoid the exclusions above. Picture a bakery where the second-floor water heater splits overnight: soaked ceiling, ruined mixer, two display cases gone. That is the claim the property section exists for.

The form goes one step further than most owners expect. Its Water Damage additional coverage pays "the cost to tear out and replace any part of the building or structure" to reach the system or appliance the water escaped from. What it never pays is the defect itself. The cracked heater is your bill; the drywall demolition around it belongs to the policy.

Carrier explainers draw the same line the ISO drafting produces. Next Insurance describes covered events as "sudden and accidental water-related events like plumbing leaks, burst pipes, or storm-caused water damage" ^{[Next Insurance: water damage claims guide, 2026-08]}.

Two covered-case traps hide in the details. Rain damage to the interior is limited: the form pays only if the building "first sustains damage by a Covered Cause of Loss to its roof or walls" through which the rain enters. Wind tears shingles off and rain follows, covered; rain works through roofing that simply wore out, not. Frozen pipes carry homework: a leak caused by freezing is excluded unless you "do your best to maintain heat" in the building or drain the system and shut off the supply. A winter-dark storefront with the thermostat off is exactly the claim adjusters decline.

Slow leaks hit the 14-day wall

BP 00 03 excludes "continuous or repeated seepage or leakage of water", along with humidity and condensation damage, when it "occurs over a period of 14 days or more" ^{[ISO BP 00 03 07 13 businessowners form (specimen), 2026-08]}. Adjusters date a leak from the physical evidence: staining rings, rot depth, mold growth. The supply line that dripped behind the ice machine all quarter is a maintenance bill, not a claim, and no amount of shock at discovery changes the date the water started.

Next's claims guidance says the same thing in plain words: damage from "poor maintenance or wear and tear" doesn't get paid ^{[Next Insurance: water damage claims guide, 2026-08]}. The practical move is boring: walk the water lines quarterly, photograph what you see, and fix drips the week you find them. The photos also help you later, because they establish when a leak was not there.

Flood cover is a separate purchase

The Insurance Information Institute states it flatly: flood damage, "including flooding generated by hurricane-generated storm surge", is typically not covered under a standard commercial policy, CPP or BOP. The standard fix is the National Flood Insurance Program, and NFIP commercial flood coverage runs up to $500,000 for the building and $500,000 for contents, with a 30-day waiting period from purchase in most cases ^{[III: does my business need flood insurance, 2026-08]}. The waiting period is the operative constraint: buying flood cover the week a named storm forms does nothing.

Know what the NFIP policy leaves out before treating it as the whole answer. FEMA's own agent guidance lists the gaps: no business-interruption or loss-of-use payment, no sewer or drain backup unless flooding caused it, and no coverage for currency ^{[FEMA FloodSmart: NFIP commercial coverage, 2026-08]}. That first gap compounds: the BOP's own business income coverage responds only to a Covered Cause of Loss, and flood is not one, so a flood that closes you for six weeks produces no income claim on either policy. How the income piece works when it does apply is covered at /coverage/business-interruption/.

For the sewer-backup gap, ask the carrier quoting your BOP whether a water backup endorsement is available and what limit it carries. It is the cheapest of these gaps to close and the one most owners discover after the drain, not before. The rest of the coverage map lives at /coverage/.

Frequently asked questions

No. BP 00 03 excludes flood, surface water, and storm surge regardless of contributing causes. Commercial flood coverage comes from the NFIP or a private flood policy, usually with a 30-day waiting period.

Not a broker. Beaconcover is an independent comparison site. We are not a licensed insurance broker, agent, or adviser; we route you to providers and do not sell, bind, or advise on policies, and nothing here is legal or tax advice. Coverage, price, and requirements vary by state, profession, payroll, and underwriting. See /methodology/ and /disclosure/. Last reviewed: 2026-08-12.