Category 3 water (sewage backup, toilet overflow with feces, rising flood water that contains contaminants) is the most hazardous water loss class. Across Katy and west Houston, the common trigger is municipal-line backflow during heavy rain events — when Brays or Buffalo Bayou overtop their banks, the entire neighborhood drainage system can reverse into low-line homes. Affected porous materials (carpet pad, drywall up to the water line, particle board) cannot be salvaged — they must be removed under containment.
We wear PPE, contain the work area, remove non-salvageable contents and structure, apply EPA-registered disinfectants, and verify safe conditions with ATP testing or similar pre-occupancy clearance before any rebuild starts.