The short answer
Why Sewage Gets into Flood Water
When heavy rain falls, storm and sanitary sewer systems can overflow. In many cities, these systems are separate, but flooding can still push sewage out through manholes, drains, or damaged pipes. Intense rainfall, common in areas with hot, rainy summers and hurricane seasons, can make this a real possibility.
Once sewage mixes with floodwater, it spreads contaminants across streets, yards, and into homes. Even clear-looking floodwater can carry harmful germs. You cannot tell by sight or smell whether sewage is present, so it is safest to assume contamination after any flood event.
Health Risks from Sewage in Flood Water
Sewage contains bacteria like E. Coli, viruses, and parasites that can cause serious illness. Contact with contaminated water can lead to skin infections, stomach problems, or respiratory issues. If you wade through flood water, wash any exposed skin with soap and clean water as soon as possible.
Children and pets are especially at risk because they may splash or drink the water. Avoid letting them play in flooded areas. If you feel unwell after exposure, see a doctor. Do not attempt to clean up sewage-contaminated water without proper protective gear.
- Wear rubber boots, gloves, and eye protection during cleanup
- Keep children and pets away from flood water
- Do not eat or drink anything that touched flood water
- Wash hands thoroughly after any contact
- Throw away any food that came in contact with flood water
- See a doctor if you develop symptoms like fever or nausea
How to Protect Your Home
Know where your main water shutoff valve is located and how to turn off electricity before entering a flooded area. Move valuables and furniture to higher floors if you have time. Seal cracks in your foundation and consider a backup pump to reduce water buildup.
After the water recedes, do not rush to start cleanup. Take photos and document the damage for insurance purposes. The pros can help with water damage documentation and assessment, but you should first ensure the area is safe and the water is gone.
What Cleanup Involves
Cleaning up after sewage-contaminated flood water is different from regular water damage. It requires thorough disinfection of every surface that came into contact with the water. Porous materials like drywall, carpet, and insulation often need to be removed and replaced because they cannot be fully cleaned.
Local water damage pros can handle this type of work, including water extraction, drying, and disinfection. They have the equipment to safely remove contaminated water and dispose of waste properly. The cost depends on the extent of the damage and the affected areas.
Costs for professional cleanup often range from a few hundred to several thousand dollars, depending on the size of the flooded area and the level of contamination. Your insurance policy may cover some of these costs, but policies vary, and your insurer decides what is covered.
- Remove all standing water using pumps or wet vacuums
- Discard porous materials that absorbed sewage
- Wash all hard surfaces with soap and disinfectant
- Dry the area thoroughly to prevent mold growth
- Wear protective gear during the entire cleanup process
- Consider hiring the pros for large or heavily contaminated areas
When to Call the Pros
You can handle small, contained spills with proper precautions, but large floods with sewage contamination are dangerous and difficult to manage alone. If the water level is deep, if sewage is visibly present, or if you have health conditions like asthma, do not attempt the cleanup yourself.
The pros can assess the damage, extract water, and disinfect your home. They also know how to handle contaminated waste and prevent cross-contamination. After a major flood, you may need to act quickly to prevent further damage, but take time to choose a qualified service.
If you need help, look for a water damage restoration service that responds to flood and sewage emergencies. They can help with both floodwater contamination cleanup and sewage backup cleanup. Remember to document everything before they start.
- Large flooded areas with sewage smell
- Flood water that has entered living spaces
- If you have open wounds or a weakened immune system
- If the flooding is from a sewage backup or overflow
- If you are unsure about the safety of the water
- If you need help with insurance documentation
Need help right now?
Phones are answered 24/7 for St. Petersburg and nearby communities.
Call Now (727) 308-5518Frequently asked questions
How can I tell if flood water contains sewage?
You cannot always tell by look or smell. Sewage may be present even in clear water. If the flood comes after heavy rain, especially in urban areas, assume it is contaminated. Look for signs like floating debris, a foul odor, or nearby sewer overflows.
Can I clean up sewage-contaminated flood water myself?
Small areas might be manageable with proper protective gear and disinfectants, but large or heavily contaminated areas are dangerous. You risk exposure to pathogens and may not fully sanitize your home. The pros have the right equipment and training to do it safely.
Will my insurance cover sewage damage from flooding?
Coverage depends on your specific policy. Standard homeowners insurance often excludes flood damage, but sewage backup might be covered as an add-on. Policies vary, and your insurer decides what is covered. Contact your insurance company and review your policy to understand your options.
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