What to Do After a House Flood: 7 Emergency Steps

Yes, turning off electricity should be one of your first priorities after discovering a flood in your home, but only if you can do so safely. Water and electricity create a deadly combination, and electrocution is a serious risk in flooded homes. If your electrical panel is located in an area that is dry and you can reach it without walking through standing water, turn off the main breaker immediately. If your panel is in a flooded basement or you would need to wade through water to reach it, do not attempt it yourself. Instead, call your utility company's emergency line and request they disconnect power remotely or send a technician. In Saint Charles County, Ameren Missouri can be reached at their 24-hour emergency line. Once power is disconnected, avoid touching any electrical appliances, outlets, or wiring that may have been in contact with flood water until a licensed electrician inspects them. Even after the water recedes and everything appears dry, electrical systems that were submerged can remain hazardous and may cause fires if energized without proper inspection. This is especially important in older homes common in historic areas of St. Charles and St. Louis, where wiring may already be compromised.

In an active flooding emergency, your first call should be to a professional restoration company like Eversafe Restoration at (636) 219-9302. Here is why: time is your greatest enemy when dealing with flood water, and a restoration company can begin emergency water extraction immediately while you handle other calls. Every hour that water sits increases damage exponentially and accelerates mold growth. A professional team will arrive with commercial-grade pumps and extraction equipment to stop the damage from spreading. Your second call should be to your insurance company to report the claim. Most policies require prompt notification, and getting your claim on record quickly helps ensure coverage. Have your policy number ready and document the time of your call. Third, if you have not already done so, contact your utility companies if you need help disconnecting power or gas. For gas leaks or if you smell gas, evacuate immediately and call from outside the home. Finally, if the flooding is due to a plumbing failure or burst pipe, call a plumber to address the source of the water. However, do not wait for the plumber before calling for water extraction. The restoration process should begin immediately regardless of whether the water source has been fixed. Our team at Eversafe can help coordinate these calls and guide you through the process.

Whether you can safely stay in your home after a flood depends on several factors, but in most cases involving significant flooding, especially from external sources like storms or river overflow, we recommend finding alternative accommodations at least until the water is extracted and the property is assessed. Floodwater from outdoor sources is classified as Category 3 or black water, meaning it contains sewage, bacteria, viruses, chemicals, and other hazardous contaminants. Breathing air in a flooded home exposes you to these pathogens, and the risk increases as the water sits and bacteria multiply. Children, elderly family members, and anyone with respiratory conditions or compromised immune systems are particularly vulnerable. Structural integrity is another concern. Prolonged water exposure can weaken floors, especially in older homes. Walking on waterlogged subflooring or flooring that has been lifted by water can result in falls or collapse. Additionally, the humidity levels in a flooded home create an extremely uncomfortable and unhealthy environment, with air quality deteriorating rapidly as mold begins growing within 24-48 hours. If your insurance policy includes Loss of Use coverage, which is standard in most Missouri homeowner policies, it will pay for hotel accommodations, meals, and other expenses while your home is uninhabitable. Document your evacuation and keep all receipts for reimbursement. Our team can help you understand your coverage and provide documentation your insurance company will need.

Mold can begin growing within 24 to 48 hours after flooding under the right conditions, and Missouri's humid climate creates ideal conditions for rapid mold proliferation. This timeline is why immediate water extraction is so critical. Mold spores are naturally present everywhere in the air, and they need only three things to colonize: moisture, an organic food source (like drywall, wood, carpet, or insulation), and time. Floodwater provides abundant moisture and saturates the organic materials throughout your home. The warm, humid conditions typical in the St. Louis metro area during spring and summer further accelerate growth. In the first 24 hours, mold spores land on wet surfaces and begin germinating. Between 24 and 48 hours, hyphal growth begins as the mold establishes itself. By 72 hours, visible mold colonies often appear, though mold may be growing extensively in hidden areas like wall cavities well before you see any visible signs. Different materials support mold growth at different rates. Paper-faced drywall, carpet padding, and wood are highly susceptible and can show mold growth within a day or two. Concrete and other harder surfaces take longer but are not immune. The key to preventing mold is rapid water extraction and professional structural drying that brings moisture levels back to normal within 3 to 5 days. This window is why we emphasize 24/7 emergency response. Every hour of delay increases your risk of a flood cleanup becoming a more extensive and expensive mold remediation project.

After a flood, particularly one involving Category 3 water from storms, river overflow, or sewage backup, many items cannot be safely salvaged and must be discarded. The general rule is that porous materials that have absorbed contaminated flood water cannot be adequately cleaned or disinfected. Mattresses, box springs, and pillows should be discarded. These items absorb water deeply and cannot be dried or sanitized effectively. Contaminated bedding becomes a health hazard and breeding ground for mold. Upholstered furniture, including couches, stuffed chairs, and recliners, typically cannot be saved after flood exposure. The padding and fabric absorb contaminants that cannot be removed. Carpet padding must be removed and discarded even if the carpet itself might be salvageable (though carpet exposed to Category 3 water usually cannot be saved either). All food items that may have been in contact with flood water or were stored in flooded areas must be thrown away, including canned goods with dented, rusted, or damaged labels. Medications and cosmetics exposed to flood water are also contaminated and unsafe. Drywall that has been saturated typically requires removal, often up to at least a foot above the visible water line because water wicks upward through the paper facing. Insulation that has absorbed water, particularly fiberglass batts, must be removed. Particle board furniture, pressed wood, and laminate items that have absorbed water will swell, delaminate, and cannot be restored. Electronics and appliances that were submerged should be professionally inspected before any attempt to use them. Keep samples and photographs of all discarded items for your insurance claim documentation.

Thorough documentation is essential for a successful insurance claim after a flood. Begin documenting immediately, even before water extraction begins if you can do so safely. Use your smartphone to take extensive photographs and video of all affected areas. Capture wide shots showing the extent of flooding and close-up shots of damaged items, materials, and structural elements. Include a reference for scale, such as a ruler or common object, and photograph date stamps on newspapers or your phone screen to establish the timeline. Walk through each affected room systematically, narrating what you see on video. Document the water line on walls, damaged flooring, ruined furniture, and any visible mold or contamination. Open closets and cabinets to document their contents. If items are floating or submerged, photograph them before moving anything. Create a detailed inventory list of damaged personal property, including descriptions, approximate age, and estimated replacement cost. Serial numbers for electronics are helpful if available. Keep damaged samples of materials like carpet, drywall, and flooring. Your insurance adjuster may want to examine these, and discarding everything before inspection can complicate your claim. Save all receipts related to the flood, including emergency hotel stays, meals, replacement necessities, and any emergency services. Document all communications with your insurance company, including dates, times, and the names of representatives you speak with. Request that any verbal agreements be confirmed in writing. Professional restoration companies like Eversafe provide detailed documentation including moisture readings, photographs, drying logs, and itemized work reports that support your claim. We work with adjusters regularly and understand what documentation they need to process claims efficiently.

This is one of the most important and misunderstood aspects of flood damage coverage. Standard homeowners insurance policies typically do not cover flood damage from natural external flooding events. There is a critical distinction in insurance terms between water damage and flood damage. Water damage from internal sources, such as burst pipes, appliance failures, water heater leaks, or roof leaks, is usually covered by standard homeowners policies. This is water damage that originates within your property or from precipitation entering through the roof. Flood damage, which is defined as water entering your home from the ground up due to rising water levels, overflowing bodies of water, storm surge, or mudflow, is specifically excluded from standard policies. For flood damage coverage, you need a separate flood insurance policy, most commonly obtained through FEMA's National Flood Insurance Program (NFIP). Properties in designated flood zones, which includes many areas near the Missouri River, Mississippi River, and their tributaries, may be required to carry flood insurance if they have federally-backed mortgages. However, flood insurance is available to any property owner regardless of flood zone designation, and we recommend it for all St. Louis metro homeowners given our region's history. Sewer backup coverage is another consideration. Water that enters your home due to backed-up sewers or drains is often not covered under standard policies but can be added as an endorsement or rider. This coverage is particularly important in older neighborhoods with aging municipal infrastructure. Understanding your coverage before a flood event helps you make informed decisions and avoid unpleasant surprises when filing a claim.

Professional flood cleanup costs in the Saint Charles and St. Louis area typically range from $1,500 for minor incidents to $10,000 or more for extensive flooding, with several factors determining where your project falls in that range. The primary cost factor is the square footage affected. A small bathroom or laundry room flood costs significantly less than a fully flooded basement or main floor. Water extraction is typically priced per square foot, with rates varying based on the volume of water and accessibility of the space. The category of water significantly impacts pricing. Category 1 clean water from a supply line requires less intensive treatment than Category 3 contaminated water from floods, sewage, or outdoor sources. Category 3 water requires full sanitization, antimicrobial treatment, removal of porous materials like drywall and carpet padding, and strict safety protocols that increase labor costs. Structural drying equipment rental adds to the total. Professional-grade LGR dehumidifiers, air movers, and monitoring equipment are essential for proper drying and are typically billed daily. The number of units required depends on the size of the affected area and the materials involved. Most drying takes 3 to 5 days. Additional costs may include demolition and removal of unsalvageable materials, mold prevention treatment, content manipulation (moving and protecting your belongings), and post-drying antimicrobial application. For insurance claims, many of these costs may be covered depending on your policy and the cause of the flood. We provide free on-site assessments and detailed estimates, and we work directly with insurance companies to document damage, maximize your coverage, and handle direct billing when possible. The cost of professional restoration is almost always less than the long-term cost of inadequate cleanup, which often leads to mold remediation projects costing tens of thousands of dollars.