What to Do Immediately After Water Damage: 8 Steps in Order

Get everyone safe, stop the water, call for help, photograph the damage and get drying started. The clock that matters is short: the EPA says to dry water-damaged areas and items within 24 to 48 hours to prevent mold growth. Everything below is about using those first hours well.

Advanced DRI has handled water losses across New York, New Jersey, Pennsylvania and Connecticut since 2000. This is the order our crews would want you to follow before they arrive.

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What to Do Immediately After Water Damage: Quick Checklist

If you smell gas or see a sagging ceiling, get out first. Otherwise, here is what to do, in order:

1. Cut power to wet areas, only if you can reach the breaker while standing somewhere dry.
2. Stop the water at the fixture valve or the main shutoff.
3. Call your insurer and a 24/7 restoration company that follows IICRC standards.
4. Photograph and video all the damage.
5. Move valuables and furniture out of the water's path.
6. Remove clean standing water; never use a household vacuum.
7. Start airflow, but not over sewage or mold.
8. Check hidden areas: baseboards, subfloor, the ceiling below.

Is It Safe to Stay in the House?

Most leaks don't force anyone out. A few situations do, and they outrank everything else here. Leave the area, or the house, if:

• You smell gas. Get out without flipping switches or using a phone inside, then call the gas utility or 911 from outside.
• The ceiling is sagging, bulging or cracking. Keep everyone out of the room below, and don't poke or drain it yourself.
• Water is touching outlets, cords or the electrical panel while the power is on.
• Sewage or outside floodwater is in the living space.
• Someone feels a tingle from the water. Don't touch a person who may be in contact with energized water. Call 911.

The electrical rule: the CDC's guidance on electrical hazards says to turn off power at the main breaker or fuse when wiring or equipment is wet, but never to step into standing water to reach it; call an electrician instead. Power stays off until a qualified electrician has inspected the equipment.

Pumping out a basement? The CDC's carbon monoxide guidance says never to run a generator inside a home or garage, even with doors and windows open, and to keep it more than 20 feet from windows, doors and vents.

If any of these apply, get out and call 911 or the utility first, then our 24/7 line at (845) 294-8919.

Water Damage Steps, in Order

Protect people, stop the spread, get help moving, then save what you can. Steps 3 to 8 often overlap, which is fine once the first two are done.

Step 1: Cut the power to wet areas (only if you can do it dry)

Put on rubber boots and gloves and grab a flashlight. If water is near outlets, cords, appliances or the panel, cut power to that area at the breaker, following the dry-floor rule above. If you can't reach the panel dry, leave it for an electrician or the utility.

Signs a circuit needs to go off: water touching baseboard outlets, an appliance standing in water, or a wet ceiling around a light fixture. Leave wet appliances unplugged until they've been checked.

Step 2: Stop the water at the source

Start at the closest valve. Toilets, sinks, washing machines and dishwashers usually have a small shutoff on the supply line behind or under them. If you can't find one, or the leak is inside a wall, close the main shutoff. Turn round handles clockwise; lever valves usually need a quarter turn so the handle sits across the pipe. Here's how to shut off your main water valve.

Then check the water meter. If the dial still moves with the main closed, either the valve isn't fully sealing or the leak is between the meter and the valve. Call a plumber or the water utility.

In the Northeast, winter freeze bursts are a common source, so find the main before the first hard freeze. A leaking tank has its own shutdown sequence; see water heater failure.

Some water can't be shut off. If it's coming in from outside, or the sump pump stopped during a power outage, lift what you can off the floor and call; here's what to do when a basement floods. In an apartment, call the super or management; they control the building valves.

Step 3: Call a restoration company and your insurer

It takes five minutes, and a crew can be on the way while you do the rest.

You usually don't need to wait for an adjuster before drying starts. New York's Department of Financial Services, in its homeowners and tenants guide, says it is important to protect your property against further damage, to save receipts for temporary fixes, and to hold off on permanent repairs until the insurer has inspected. Notify your insurer promptly and read your own policy; terms vary by company and state.

Renters should also tell the landlord in writing, the same day. Who covers what depends on the cause and the lease; this breakdown of who pays when you rent goes through the usual cases.

Our dispatchers answer around the clock at (845) 294-8919. Typical arrival is within 90 minutes in nearby service areas.

Step 4: Photograph and video everything

Start wide, then go close. Take a slow video walk-through of each affected room, then close-ups of water lines, swollen baseboards and soaked contents. Finish with the source itself.

Keep damaged items until the adjuster has seen them, or until your insurer tells you otherwise. Keep receipts for anything you buy to limit the damage, from tarps to a wet/dry vac. For a full shot list and how to organize it for a claim, see how to document property damage.

Step 5: Move valuables and furniture out of the water's path

If it takes seconds, grab a wide photo or video of the room first, then move things. Protecting belongings beats perfect documentation.

Lift furniture legs onto squares of aluminum foil or plastic blocks. Painted or stained wood blocks can bleed color into wet carpet. Roll up loose rugs and carry electronics and paperwork to a dry room. Don't throw anything away yet.

Wet papers and photos can often be saved if you act early. The National Archives' flood damage guidance says most prints, negatives and slides can be air dried individually, face up, and that wet books and documents that can't be air dried within two days should be frozen. It also warns never to freeze old photographs or negatives; ask a conservator about those.

The photo is from a kitchen in Hoboken, NJ, in October 2026. The wet flooring had been taken up to the subfloor, and the island and cabinets were sealed under plastic so dust and moisture from the tear-out could not reach them. On our jobs, anything that can't leave the room gets wrapped before the floor comes up.

Step 6: Remove clean standing water you can safely reach

Towels, a mop and a wet/dry shop vac are fine for small amounts of clean water from a supply line or faucet, as long as the vac is plugged into a dry, working circuit away from the water. Never use a regular household vacuum on water.

Do this only for clean water (Category 1, explained below). If the water came from a toilet, a drain, the sewer or outside, stop and leave it for a crew with protective gear. Our guide on what you can safely extract yourself before a crew arrives covers tools, technique and where to stop.

Step 7: Start airflow, but know when not to

Open windows when it's cool and dry outside. On a humid Northeast summer day, keep them shut and run the air conditioning or a dehumidifier instead; muggy outside air adds moisture rather than removing it.

Two exceptions. If the ductwork or air handler got wet, or you suspect mold in the system, leave the central HVAC off; the EPA's mold cleanup guidance says not to run an HVAC system you know or suspect is contaminated with mold. And don't point fans at sewage-soaked areas or visible mold. Standard restoration practice under the IICRC S500 and S520 standards contains those areas before air is moved, because blowing across them can spread contaminants to clean rooms.

Step 8: Check for water you can't see

Water travels sideways and down, so where you found it is rarely the only wet spot. Check:

• baseboards and the bottom few inches of drywall (soft, swollen or discolored)
• toe kicks under kitchen and bathroom cabinets
• the subfloor and crawlspace, if you can get to them
• the ceiling of the room below a bathroom or kitchen
• the closet or room on the other side of a wet wall

Looking and pressing only gets you so far. Drywall can feel dry on the face while the back side and the framing are still wet, which is why crews check with moisture meters instead of trusting appearance. Our list of places hidden water collects goes room by room.

Can You Handle It Yourself? What Not to Do, and When to Call a Pro

A small clean-water spill caught right away is often a towels-and-fans job. Bigger or dirtier losses aren't. First, what not to do:

• Don't rely on bleach. The EPA recommends scrubbing mold off hard surfaces with detergent and water, and says porous materials such as ceiling tiles and carpet may have to be thrown away once moldy. Its brief guide adds that biocides such as chlorine bleach are not recommended as a routine practice during mold cleanup. Never mix bleach with ammonia or other cleaners.
• Don't switch on lights or ceiling fans under a wet ceiling.
• Don't throw out damaged items before the adjuster sees them.
• Don't paint, caulk or seal over wet drywall. It traps the moisture behind the new finish.

Stop and call a professional when:

• the water is Category 2 or 3 (dirty water, sewage or floodwater)
• more than one room is wet, or water got into ceilings or walls
• materials have been wet longer than a day or two, past the EPA's 24 to 48 hour drying window
• visible mold covers more than about 10 square feet; the EPA points larger areas to its professional remediation guidance (see our mold remediation service)
• you see structural signs (sagging, cracking) or water near wiring

Some people should stay out of the cleanup entirely. The EPA's flood cleanup guidance says children, pregnant people, people with weakened immune systems and people with chronic breathing problems such as asthma should not take part.

Clean Water, Gray Water or Sewage? How the Category Decides the Cleanup

Restoration firms classify water by how contaminated it is, using the ANSI/IICRC S500 Standard for Professional Water Damage Restoration. The category summary below follows the S500 definitions as quoted in a 2022 NADCA training document.

Category	What it is	Can you handle it?
Category 1 (clean)	From a sanitary source: broken supply line, overflowing sink or tub with no contaminants, falling rainwater	Small areas, if dried quickly
Category 2 (gray)	Significant contamination: dishwasher or washing machine discharge, some toilet overflows	Only a small spill on hard surfaces; wet carpet pad is generally removed under S500 practice
Category 3 (black)	Grossly contaminated: sewage, waste line backflows, seawater, rising water from rivers or streams	No; porous materials it touched are removed, and workers wear protective gear

Category isn't fixed. Under the S500, clean water can deteriorate to Category 2 or 3 as it sits, depending on time, temperature and what it soaks into. Odor is one sign it has.

Basements need care. Surface floodwater from rivers or storm runoff is Category 3. Water from a sewer line backup is also treated as Category 3. Seepage through a foundation wall or water from a failed sump has to be assessed on site. Until someone checks, treat it as contaminated; that's how our sewage cleanup crews approach it.

Class is a separate scale. It describes how much wet material there is to dry, which drives how much drying equipment the job needs, not how dirty the water is. Classes 1 to 3 run from a small wet area to most of a room; Class 4 covers water held deep in dense materials such as hardwood, plaster and concrete, which take longer to dry. For more on both scales, see IICRC standards explained.

What Happens After You Call: Water Damage Techniques a Crew Uses on the First Visit

Standing water keeps wicking into drywall, pad and subfloor; our post on how quickly microbial growth starts explains why the clock matters.

On the first visit, the work usually looks like this:

• Moisture mapping. Thermal cameras show temperature differences that can point to moisture. Each suspect spot is confirmed with a moisture meter.
• Extraction. Truck-mounted or portable units pull water out of carpet, pad and hard floors.
• Controlled demolition. Flood cuts or pulling flooring, only where readings or the water category say a material can't stay.
• Containment and HEPA air scrubbing when contamination or mold is involved.
• Antimicrobial treatment. An EPA-registered product, applied per its label where contamination calls for it, not as a routine step on every clean-water loss.
• Dehumidification and air movement. Low-grain refrigerant (LGR) dehumidifiers and air movers, placed according to the readings.
• Daily monitoring until wet materials read the same as unaffected materials of the same type. Readings decide when it's dry, not the calendar.

Our crews follow IICRC S500 procedures and record readings at every visit, which also gives your insurer a record of the drying. For a fuller walk-through of the visit and the days after, see what to expect from emergency restoration services, or read about our water damage restoration service.

Apartments, Condos and Multi-Unit Buildings

In a building, call the super or management office first; they control the risers and shutoffs. Check the unit above (likely source) and the unit below (likely damage), and photograph your own unit even if the leak started upstairs.

In co-ops and condos, the building's master policy and your own unit-owner (HO-6) or renters policy usually split the loss between the structure and your contents and improvements. Our water damage restoration in New York City page covers high-rise work, and the apartment water damage guide goes deeper on tenant rights and who pays.

What Hotels, Property Managers and Facility Managers Should Do First

• Close off affected rooms or units, and relocate guests or tenants if water is spreading.
• Have maintenance cut power to wet areas at the panel, following the dry-floor rule above.
• Notify affected occupants, including units above and below.
• Start an incident log: times, photos, units, who was told what.
• Call a restoration firm that can staff several units at once.

More on how we handle hospitality properties.

Before You Call Your Insurer: Three Things to Know

1. Sudden and accidental is treated differently from gradual. Standard homeowners policies are generally written for sudden, accidental water damage, such as a burst supply line. The Insurance Information Institute's guide to what homeowners insurance covers lists accidental discharge or overflow of water from a plumbing, heating or air conditioning system as a covered peril on most policy forms, and notes that a policy will not cover damage due to lack of maintenance. Check how your own policy words both.

2. Flood and sewer backup are usually separate. New York's DFS guide says flood losses are not covered by standard homeowners policies and are insured separately through the National Flood Insurance Program, which typically has a 30-day waiting period before a new policy takes effect, with some exceptions. Sewer and drain backups, including sump pump failure, are typically excluded too; some insurers sell a water backup endorsement that covers them, so check whether your policy has one.

3. Keep the receipts. Reasonable costs to prevent further damage are often reimbursed, per the same DFS guide. Get a claim number and keep every receipt. For more on claims after a pipe failure, see burst pipe insurance claims.

What If the Water Keeps Coming Back?

When the first fix doesn't hold, the signs usually point here:

Problem	Likely cause	What to do now	Need a pro?
Water meter still moving after shutoff	Main valve not fully sealing, or a leak between the meter and the valve	Confirm the main is fully closed; call a plumber or the utility	Yes, right away
Water returns after you removed it	Source not fully stopped, or a hidden leak	Recheck the source; look at walls and ceilings nearby	Yes, same day
Musty smell	Wet materials or growth somewhere	Ventilate if the air outside is dry; find the wet area	Yes, soon; odor usually means wet materials or growth
Ceiling stain, no drip	Slow leak, or old damage	Photograph it; mark the edge in pencil and watch for growth	Yes, to find the source
Carpet stays wet after extraction	Saturated pad or wet subfloor	Lift a corner to check the pad and floor	Yes, for professional drying

Frequently Asked Questions

How long do you have to dry out water damage?

The EPA advises drying wet building materials and furnishings within 24 to 48 hours to prevent mold growth. That's why the first steps matter: stop the water, remove what you safely can and get air moving the same day. Professionals confirm materials are actually dry with moisture meters, not by how the surface looks or feels.

How do I know if I have hidden water damage?

Watch for a musty smell, stains or bubbling paint, baseboards that are soft or swollen, flooring that cups or feels spongy, and a water meter that keeps moving with every fixture off. Step 8 above lists where to check first.

Can water-damaged drywall be saved?

Sometimes. Drywall wet with clean water and dried quickly can often stay, if it hasn't sagged, crumbled or lost its strength. Drywall soaked by Category 2 or 3 water, or left wet too long, is usually cut out and replaced. Here's more on when water-damaged drywall can be saved.

Does homeowners insurance cover water damage?

Often, when the damage is sudden and accidental, like a burst pipe. Damage from a slow leak that went on for months often isn't. Flood and sewer backup usually need separate coverage: an NFIP or private flood policy, and a water backup endorsement. Check your declarations page and the insurance section above, then ask your insurer.

How long does it take to dry out a house after water damage?

There's no fixed number of days. It depends on how much got wet, what it is (hardwood, plaster and concrete hold water longer than drywall) and the conditions in the house. Crews take readings every day and stop when wet materials match unaffected ones, so the readings, not the calendar, decide when it's done.

Recap: The First Hour on One Screen

Get people out of danger, shut off power only from a dry spot, and stop the water. Call your insurer and a restoration company early, photograph everything, move what you can, and remove only clean water. Then let airflow and professional drying do the rest, inside that 24 to 48 hour window.

Water in the house right now? Call (845) 294-8919, any hour. Once everything is dry, a working sump pump with a battery backup is worth checking before the next storm; see sump pump failure prevention.