What Should You Never Do After a Sewage Backup?
Last updated October 26, 2026
The short answer
Don't Turn on Fans or HVAC
Turning on fans or the HVAC system after a sewage backup can circulate contaminated air throughout your home. Sewage contains bacteria, viruses, and mold spores that become airborne when disturbed. This can spread contamination to unaffected rooms and increase health risks for you and your family.
Keep the HVAC system off and close doors to the affected area to contain the spread. Open windows only if the outdoor air is dry and not humid, as humidity can encourage mold growth. In Tulsa's humid subtropical climate, be cautious about introducing moist air. Wait for the pros to assess the situation before using any ventilation.
- Do not turn on ceiling fans or portable fans.
- Do not switch on the air conditioning or heating.
- Keep windows closed if outdoor humidity is high.
- Avoid using a vacuum cleaner, which can aerosolize contaminants.
- Do not use a hairdryer or other blowing devices to dry surfaces.
Don't Walk Through the Area
Walking through a sewage backup can track contaminants throughout your home. Your shoes and clothing can carry harmful pathogens to carpets, floors, and other surfaces. This increases the area that needs cleaning and raises the risk of cross-contamination.
If you must enter the area, wear rubber boots, gloves, and a mask. But the safest option is to stay out entirely. The pros have the right protective gear and equipment to handle the cleanup. Your health is more important than saving a few belongings.
Don't Attempt DIY Cleanup
Attempting to clean up sewage yourself is dangerous. Raw sewage contains bacteria like E. Coli and hepatitis A, which can cause serious illness. Without proper training and equipment, you risk exposure to these pathogens. Home cleaning products are not designed to disinfect sewage properly.
The pros use industrial-grade disinfectants and techniques to safely remove and sanitize affected materials. They also know how to handle porous items that cannot be saved. Let the pros handle the cleanup to protect your health and prevent further damage.
- Do not use household bleach only; it may not kill all pathogens.
- Do not try to remove soaked carpet or drywall without protective gear.
- Do not use a mop or towel to soak up sewage; it spreads the mess.
- Do not dispose of sewage-contaminated items in your regular trash without bagging them securely.
- Do not use a plunger or chemical drain cleaner; you could cause more damage.
Don't Flush or Run Water
Flushing toilets or running water after a sewage backup can cause the backup to worsen. The system may be blocked, and additional water can overflow more sewage into your home. This creates a bigger mess and increases the risk of water damage to floors and walls.
Avoid using sinks, showers, or washing machines until the backup is resolved. If you must use water, do so sparingly and only if the pros have confirmed it is safe. Write down the location of your main water shutoff valve now, so you can act quickly if needed.
Don't Ignore Health Risks
Sewage backup poses serious health risks, including infections and respiratory issues. If you feel unwell after exposure, see a doctor. Do not ignore symptoms like nausea, diarrhea, or skin irritation. Children, elderly, and pets are especially vulnerable.
The pros wear full protective gear, including respirators, to avoid exposure. They also take precautions to prevent cross-contamination. Never compromise your health for the sake of cleanup. If you live in Tulsa, keep your shutoff valve location written down to minimize future risks.
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Call Now (918) 496-6447Frequently asked questions
Can I use a shop vac to remove sewage water?
Using a shop vac is not recommended. It can aerosolize contaminants and spread them into the air. The pros have specialized equipment designed to safely extract sewage without spreading pathogens. Let them handle the extraction.
What should I do with items touched by sewage?
Items touched by sewage should be considered contaminated. Porous items like carpets, drywall, and upholstered furniture often cannot be saved. Non-porous items may be cleaned, but only by a professional. Do not handle them without protective gloves and a mask.
Should I file an insurance claim for sewage backup?
You can contact your insurance company to discuss your policy. Policies vary, and your insurer decides what is covered. Sewage backup is often excluded from standard homeowners policies, so check your policy or ask your insurer. Document the damage with photos for your records.
More questions and answers
- Is Sewage Backup Damage Automatically Covered by Insurance?
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- How Dangerous Is Sewage Backup in a House?
- What Causes a Sewage Backup in a Home?
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