How to Handle a Sewer Backup

Sewage contains dangerous bacteria, viruses, and parasites. Do not wade through sewage water without protective gear—rubber boots and gloves at minimum. Keep children and pets away from affected areas. If sewage contacts your skin, wash immediately with soap and water. Seek medical attention if you feel ill after exposure.

Do not flush toilets, run sinks, or use any drains until the backup is cleared—you'll only make flooding worse. If the backup is severe, shut off water to the home. Turn off the HVAC system to prevent spreading contaminated air throughout the house.

Open windows to ventilate the area—sewage gases are hazardous. Turn off electricity to affected areas if safe to do so. Document all damage with photos and video from a safe distance for insurance purposes. Make a list of damaged items.

Call an emergency plumber to diagnose and clear the main line blockage. For significant sewage contamination, call a professional water damage restoration company—they have the equipment and training for safe cleanup. Contact your insurance company—sewer backup coverage is an add-on, so check your policy. Do not attempt DIY cleanup of significant sewage contamination.