The short answer
Common Sources of Contamination
Floodwater picks up contaminants as it moves. Water from overflowing rivers or storm drains carries soil, animal waste, and pesticides. Sewage backups introduce dangerous bacteria and viruses into your home. Street flooding often mixes with oil, gasoline, and other automotive fluids. You cannot tell by looking if these contaminants are present, so caution is essential.
Water from a broken supply line inside your home is usually clean initially. However, once it flows over floors and carpets, it can become contaminated. Water that has sat for more than 24 to 48 hours grows bacteria and mold. The longer water stands, the greater the contamination risk becomes, regardless of its original source.
Visible and Sensory Warning Signs
Look for visual clues in the water. Clear water from a recent pipe burst may be clean. Brown, gray, or black water almost certainly contains contaminants. Floating debris, silt, or an oily sheen on the surface are clear indicators. Muddy water from outside carries dirt and whatever was in that soil into your living spaces.
Pay attention to unusual smells. A musty odor often signals mold growth beginning. A strong sewage or rotten egg smell points to bacterial contamination. Chemical or gasoline odors mean hazardous substances are present. If the air smells foul or makes you feel lightheaded, leave the area immediately and get fresh air.
Health Risks from Exposure
Contact with contaminated floodwater can cause serious illness. Skin infections, rashes, and wound infections are common from bacteria in the water. Ingesting even a small amount can lead to stomach illnesses, vomiting, and diarrhea. Inhaling mists or vapors from contaminated water can also cause respiratory problems, especially for those with asthma or allergies.
Certain groups face higher risks. Children, the elderly, and people with weakened immune systems are more vulnerable to infection. If you have open cuts or sores and must enter floodwater, cover them completely with waterproof bandages. Always wash thoroughly with soap and clean water after any potential contact, and see a doctor if you feel unwell afterward.
- Bacteria like E. Coli and Salmonella from sewage.
- Viruses such as norovirus and hepatitis A.
- Parasites including Giardia and Cryptosporidium.
- Fungal spores that lead to mold growth.
- Chemical residues from lawns, garages, or streets.
- Heavy metals leached from soil or old pipes.
Safe Cleanup and Professional Help
Never handle contaminated floodwater cleanup alone. The proper removal and drying process requires specific safety gear and techniques. Local water damage pros have industrial-grade extractors, air scrubbers, and dehumidifiers to remove water and dry the structure safely. They also know how to contain the area to prevent cross-contamination to other parts of your home.
Professionals assess the damage to determine the correct cleanup category. This classification guides their safety protocols and cleaning methods. For extensive flooding, they often recommend a thorough water damage inspection to find hidden moisture in walls and subfloors. This step is crucial to prevent mold from growing later in concealed cavities.
Dealing with Insurance and Documentation
Document the damage thoroughly for your insurance claim. Take photos and videos of the water levels, its color, and any visible contaminants before cleanup begins. Keep a detailed list of damaged items. This visual evidence can be important when discussing the scope of loss with your insurance adjuster. Policies vary, and your insurer decides what is covered.
Communicate clearly with your insurance company about the water source and any signs of contamination. They may require specific cleanup procedures to be followed for coverage. Save all receipts from any professional services you hire. For complex situations involving widespread damage, consulting the site's pages on flood damage cleanup or emergency water extraction can provide useful context for the restoration process.
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Call Now (210) 761-3044Frequently asked questions
What should I do if I already touched floodwater?
Wash the exposed skin immediately with soap and clean, running water for at least 20 seconds. If you have any open wounds, clean them and monitor for redness or swelling. Change out of contaminated clothes and wash them separately. See a doctor if you develop a rash, fever, or gastrointestinal symptoms.
Can I save furniture that got wet with floodwater?
Porous materials like upholstered furniture, mattresses, and carpets that absorbed contaminated floodwater usually cannot be properly sanitized and should be discarded. Non-porous items like metal or plastic furniture can often be cleaned and disinfected by professionals. A thorough assessment is needed to determine what can be safely restored.
How is contaminated water removed from a home?
The pros use truck-mounted or portable extractors to remove the bulk water. They then apply EPA-registered disinfectants to affected surfaces to kill pathogens. Industrial air movers and dehumidifiers dry the structure completely. Contaminated porous materials are carefully bagged and removed according to local disposal regulations.
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