Sewage Backup
When sewage returns through drains into a property.
Definition
A sewage backup occurs when wastewater from the sewer system flows backward through drains into a building. This is always classified as Category 3 water damage due to the presence of human waste, bacteria, viruses, and other pathogens. Causes include clogged sewer lines, tree root intrusion, municipal sewer problems, and heavy rainfall overwhelming systems. Restoration requires immediate extraction, removal of contaminated materials, thorough disinfection, and professional-grade antimicrobial treatments.
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