Sewage backup: contamination and recovery

Distinguish clean water, sewage and contaminated porous materials before cleaning, drying and rebuilding.

VERT / GREEN = documenter/entretenir · JAUNE / YELLOW = mesurer/vérifier · ROUGE / RED = arrêter et faire sécuriser/valider.

Raw sewage in the home
Restrict access and address biological hazards before finish work. Electrical equipment affected
Do not enter/re-energize until electrical safety is established. Porous materials soaked
Assess removal, disinfection and rapid drying instead of concealing damage. Backup cause documented
Keep inspection, photos and corrective measures in the home record.

What the professional checks

Define contamination and salvageable materials
Coordinate plumbing, drying, electrical and health risks

Official sources

Santé Canada — nettoyage après inondation

Checked: 2026-08-22

V26

Often-overlooked service interfaces

V26 connects systems that cross utility, plumbing, HVAC, envelope and metering boundaries.

Generator and backup power

V34

Use, excavation and construction constraints

V34 connects use permits, soil, excavation, neighbouring structures and public-space logistics before hard-to-reverse work.

Contaminated soil found during excavation