What pathogens are in sewage backup water?
Sewage backup is Category 3 water under IICRC S500 §10.5.3. Biological hazards include E. coli, Salmonella, Hepatitis A, norovirus, and Giardia cysts. All porous materials contacted by the sewage — drywall, carpet, pad, insulation — must be removed and disposed of as regulated waste.
Category: Water Damage
Reviewed: 2026-04-19
Source: IICRC S500 §10.5.3 · OSHA 29 CFR 1910.1030
RP
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