The short answer
Health Risks from Raw Sewage
Raw sewage contains harmful microorganisms like E. Coli, hepatitis, and parasites. When it backs up into your home, those pathogens can contaminate floors, walls, and personal items. Touching affected surfaces or breathing in airborne particles can lead to stomach illness, respiratory problems, or skin infections. Children and pets are especially vulnerable because they often come into closer contact with floors and objects.
The danger doesn't end when the visible water is gone. Bacteria can survive in damp materials for days, and dried sewage dust can become airborne and be inhaled. That's why any sewage spill should be treated as a serious health concern, not just a messy cleanup. If you feel unwell after exposure, see a doctor.
- Wear gloves, boots, and a mask if you must enter the area
- Keep children and pets away until cleanup is complete
- Wash your hands thoroughly after any contact
- Open windows for ventilation if safe to do so
Structural Damage to Walls and Floors
Sewage water is highly corrosive and can weaken building materials quickly. Drywall soaks up the contaminated liquid, causing it to swell, crumble, and lose its strength. Wooden floor joists and subfloors absorb moisture, which can lead to warping, rot, and even sagging over time. The longer the sewage sits, the deeper the damage goes.
The contamination also spreads into hidden spaces like wall cavities and under flooring. You might not see the full extent of the damage until later, when odors or stains appear. That's why professional water damage assessment is important to determine what can be saved and what needs to be removed.
Contamination Spreads Quickly
Sewage backup doesn't stay in one spot. It can flow into adjacent rooms, seep through baseboards, and travel along pipes or electrical conduits. The contaminated water can also wick up into drywall and insulation, moving several feet above the visible waterline. This makes it hard to contain and increases the area that needs cleaning.
Even after the bulk of the water is removed, the contaminants remain in porous materials. A thorough cleaning process involves removing affected materials and applying antimicrobial treatments to kill remaining pathogens. Without that, the contamination can persist and create ongoing health and odor issues.
Long-Term Odor and Mold Issues
Sewage backup leaves behind a strong, persistent odor that can be difficult to eliminate. The smell comes from organic matter and bacteria that remain in materials even after drying. Simple air fresheners won't solve the problem; the source of the contamination needs to be removed or treated to stop the odor from returning.
Moisture from sewage also creates ideal conditions for mold growth. Mold can start developing within a day or two in damp, dark areas. It can spread through the home and cause allergic reactions or respiratory issues. Addressing the moisture quickly and thoroughly is key to preventing mold from taking hold.
When to Call the Pros
Because of the health and structural risks, sewage backup cleanup is not a do-it-yourself job. The pros have the right protective equipment and cleaning agents to handle contaminated water safely. They also have specialized drying equipment that can remove moisture from hard-to-reach places, reducing the chance of mold and rot.
If you have sewage backup, act quickly to limit damage. Turn off the water source if you can identify it, and avoid walking through the area. Then contact local water damage pros for an inspection. If you live in Mesa, keep the phone number for a trusted professional handy before an emergency happens.
- Do not use regular household cleaners; they are not strong enough
- Do not turn on HVAC systems, which can spread contaminants
- Keep the area blocked off to prevent tracking sewage into other rooms
- Take photos for your insurance records if you plan to file a claim
Need help right now?
Phones are answered 24/7 for Mesa and nearby communities.
Call Now (480) 898-4279Frequently asked questions
Can I clean up sewage backup myself?
Cleaning up sewage safely requires protective gear and industrial-grade disinfectants that most homeowners don't have. The risk of illness and incomplete cleaning is high. Leave it to the pros who have the right equipment and training for this type of hazardous cleanup.
How long does sewage damage take to become a problem?
Damage can begin within hours. Porous materials absorb sewage quickly, and mold can start growing within a day or two. The longer the sewage sits, the more extensive the damage and the higher the risk to your health. Acting fast is important, but professional help is still needed.
Will my insurance cover sewage backup damage?
Policies vary, and your insurer decides what is covered. Some home insurance policies include sewage backup coverage, but others exclude it. Check your policy documents to see if you have this protection. If you're unsure, contact your insurance company to ask about your specific coverage.