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What Should You Do First After Your House Floods?

Last updated October 23, 2026

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The short answer

Ensure Immediate Safety First

Avoid entering any flooded area until you are certain the electricity is off. Water conducts electricity, creating a severe shock hazard. If you must wade in water to reach the breaker, it is safer to wait for help. Instead, call an electrician or your utility company to disconnect power before you proceed with any other steps in a flooded home.

Keep children and pets completely away from the affected area. Floodwater can hide sharp objects, chemicals, or other hazards. If the flooding is from a sewer backup or outside source, assume the water is contaminated. Wear protective gear like rubber boots and gloves if you must be near the water, and wash thoroughly if you come into contact with it.

Stop the Water Source

If the flood is from a broken pipe or appliance, locate your home's main water shutoff valve and turn it off. This valve is often found where the main water line enters your house, such as in a garage, crawlspace, or near the water heater. Knowing the location of this valve ahead of time helps you act quickly during an emergency.

For flooding from heavy rain or a storm surge, you likely cannot stop the source. In these cases, focus on safety and moving valuables to higher ground if it is safe to do so. Do not attempt to plug drains, as this can cause pressure to build and worsen structural damage. Your goal shifts to mitigating damage until the water recedes.

Contact Your Insurance and Document

Notify your insurance company about the incident as soon as you are safe. They will guide you on starting a claim. Policies vary, and your insurer decides what is covered. Take extensive photos and videos of all damage, including water levels, ruined belongings, and the source. This visual evidence is crucial for your claim and for the water damage professionals to assess the scope.

Create a detailed list of damaged or destroyed items. Note their approximate age, value, and model numbers if possible. Do not throw anything away until an insurance adjuster has seen it, unless it is a biohazard. Keep all receipts for expenses related to the flood, like temporary lodging or supplies, as these may be reimbursable under certain policy provisions.

  • Photograph standing water from multiple angles.
  • Video pan across each affected room slowly.
  • Capture close-ups of damaged walls, floors, and ceilings.
  • Take pictures of the water source, if visible and safe.
  • Document serial numbers on ruined electronics or appliances.
  • Photograph water-stained personal items like books and furniture.

Begin Water Removal and Mitigation

Once it is safe, start removing water to prevent further damage. Use a wet-dry vacuum, mops, and towels for small amounts. For significant flooding, this is a job for local water damage pros who have industrial extraction equipment. The longer water sits, the more it soeps into materials, leading to warping, mold, and structural issues that are costlier to repair.

Move undamaged furniture and belongings to a dry area. Prop up wet furniture cushions and place aluminum foil under furniture legs to prevent staining carpets. If the weather permits, opening windows can help with ventilation. However, in a hot, humid climate, outdoor air may add more moisture, so using dehumidifiers is often necessary for proper drying.

Prevent Mold and Secondary Damage

Mold can begin to grow within 24 to 48 hours in damp conditions. After water removal, drying the structure completely is critical. The pros use moisture meters, air movers, and dehumidifiers to dry walls, floors, and subfloors that you cannot see. Do not assume a surface is dry because it feels dry to the touch, as moisture lingers inside building materials.

Discard porous materials that have absorbed contaminated water, such as carpet padding, insulation, and damaged drywall. Non-porous items can often be cleaned and disinfected. If you see or smell mold, or if someone in the home has respiratory issues, consult a mold assessment professional. They can test and recommend a safe remediation plan separate from the water damage restoration work.

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Frequently asked questions

Should I try to clean the water myself?

You can remove small amounts of clean water with towels and a wet vacuum. For large-scale flooding, or any water from a sewer or outside, professional cleanup is needed. Contaminated water requires specialized disinfection to protect your health.

How long does the drying process take?

Drying a home typically takes three to five days, but it depends on the amount of water, materials affected, and indoor humidity. The pros monitor moisture levels daily to ensure everything is dry before starting repairs.

Will my homeowner's insurance cover this?

Coverage depends on your policy and the flood's cause. Sudden internal events like a burst pipe are often covered. Flooding from outside ground water usually requires separate flood insurance. Policies vary, and your insurer decides what is covered.

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