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Sewage Backup in the Basement: Health Risks and Safe Cleanup

September 22, 2026 · Steamatic of Eau Claire

Restoration crew in protective gear cleaning up a sewage backup.
Sewage cleanup requires protective equipment and disinfection.

A sewage backup is classified as Category 3, or "black water," because it can carry bacteria, viruses, and other contaminants. It requires a different response than a clean-water leak.

Steamatic of Eau Claire, operated by TRAC Solutions LLC, provides 24-hour restoration services in Eau Claire and surrounding Chippewa Valley communities.

Keep People and Pets Away

Limit access to the affected area. Do not touch sewage without protective gear, and keep children and pets out of the space.

Stop Using Water

Avoid flushing toilets, running sinks, or doing laundry until the cause of the backup is found, since that can send more wastewater into the home. Contact a plumber to address the line.

Don't Try to Save Porous Materials

Carpet, pad, drywall, and insulation that absorbed sewage usually must be removed and disposed of. Cleaning them in place is generally not recommended.

Document for Insurance

Photograph the backup and damaged items. Coverage for sewer backups varies by policy and may require a specific endorsement, so check with your insurer.

Professional Sewage Cleanup

Professional cleanup includes extraction, removal of contaminated materials, cleaning, disinfection, and structural drying. See our water damage and sewage cleanup services.

Prevent Mold and Rebuild

Lingering moisture can lead to mold; learn about our mold remediation. Once the area is clean and dry, our structure cleaning and repair team can restore drywall, flooring, and finishes.

Get Sewage Backup Help

Steamatic of Eau Claire serves Eau Claire, Altoona, Chippewa Falls, Lake Hallie, Menomonie, and nearby communities. Call the 24-hour line so the team can assess the loss and begin the next appropriate step.

Call 715-834-8822 to request emergency water extraction and structural drying.

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