If sewage from your plumbing fixtures or onsite system backs up into your home, avoid contact with the wastewater as it may contain harmful pathogens. Contact your local health department or regulatory agency for guidance. Cleanup personnel should wear protective clothing (e.g., long rubber gloves, face splash shields).
After cleanup is complete, thoroughly wash all equipment, tools, and clothing used during cleaning as well as the flooded area. Disinfect all items or areas exposed with a mixture of 90 percent water and 10 percent household bleach. The area should be dried out thoroughly and not used until it has been completely dry for at least 24 hours.