Emergency Water Damage Checklist: The First 24 Hours

Last verified September 2026. See our sourcing and methodology.

The first 24 hours matter more than almost anything else in a water damage situation — for both the damage itself and your insurance claim. Here's the order that actually helps.

Stop the source, if you can safely

If it's a plumbing failure, shut off the main water supply. If electrical hazards are possible — water near outlets, panels, or appliances — don't enter the area; call an electrician or the fire department first.

Document before you touch anything

Take wide and close-up photos and video of every affected area before moving or removing anything. This is the single most common mistake people make — cleaning up first and losing the documentation that supports their claim. See our guide on documenting a claim.

Call your insurer and a restoration company in parallel

Don't wait for one before contacting the other — most policies require “reasonable steps to prevent further damage,” and a 24-hour restoration company can often start mitigation the same day.

Remove standing water and start air movement, if it's safe

If the water is clean (Category 1), removing standing water and running fans or a dehumidifier reduces the mold risk that starts building within 24–48 hours. For gray or black water, leave extraction to professionals — see our guide on water categories.

Keep damaged items until they're documented

Don't throw out carpet, drywall, or furniture until your insurer's adjuster has seen them or you've been told it's fine — and keep receipts for anything you buy for cleanup (a shop vac, a dehumidifier rental), since many policies reimburse reasonable mitigation costs.