How Do Professionals Disinfect After Sewer Backup?

Before any disinfecting can happen, the backup water and solid waste must be removed. The pros use pumps and wet vacuums to extract standing water, then dispose of contaminated materials like drywall, carpet, and padding. Anything porous that touched sewage is usually removed because it cannot be fully cleaned.

After the bulk waste is gone, the remaining surfaces get a rough cleaning to remove dirt and grime. This step matters because disinfectants work most effectively on visibly clean surfaces. A detergent or degreaser breaks down the oily film left by sewage, so the disinfectant can reach the actual surface underneath.

• Wear rubber boots, gloves, and a mask before entering the area
• Open windows and doors for ventilation if safe
• Remove all standing water with a pump or wet vac
• Bag and discard porous items like drywall and carpet
• Clean hard surfaces with detergent before disinfecting
• Keep children and pets away until the area is dry

The pros apply disinfectant using sprayers, mops, or cloths, depending on the surface. Sprayers cover large wall and floor areas evenly, while cloths work well for fixtures and tight corners. They work from the cleanest areas toward the most contaminated ones to avoid spreading pathogens.

Surfaces that need special attention include baseboards, door frames, light switches, and any cracks or crevices where sewage can hide. After the disinfectant has dried, a second application may be used on heavily soiled spots. The goal is to reach every surface that could have come into contact with contaminated water.

• Spray walls from bottom to top to avoid streaks
• Pay extra attention to grout lines and tile joints
• Use a brush for rough surfaces like concrete
• Disinfect the outside of trash bags and bins
• Clean and disinfect your cleaning tools afterward
• Let the area air dry completely before using it

Sewage contains harmful germs, so safety is a top priority. The pros wear personal protective equipment, including rubber gloves, boots, goggles, and respirators. They also set up containment to prevent cross-contamination to clean areas of your home. You should stay out of the affected area until it is declared safe.

If you feel unwell after a sewer backup, see a doctor. Also, check your insurance policy to understand what is covered. Policies vary, and your insurer decides what is covered. Keep your shutoff valve location written down in case of future backups, especially if you live in Columbus.