Emergency guide
Sewage backup: what to do
Sewage in your home is Category 3 black water — it carries bacteria, viruses, and parasites. This is not a mop-and-bucket situation. Protect your family first, then call licensed remediation.
Do this in the next 10 minutes
- 1
Keep everyone away from affected areas
Close doors to contaminated rooms. Children, elderly, and anyone immunocompromised should leave the area entirely.
- 2
Stop using all plumbing
No toilets, sinks, showers, or laundry — anything that drains into the affected line worsens backup. Warn all household members.
- 3
Shut HVAC if contamination could spread
Return vents can pull airborne contaminants through the house. Turn off the system if sewage is near floor registers.
- 4
Call a plumber and restoration
Plumber clears the line; restoration handles biohazard cleanup per IICRC S500 standards. You need both.
- 5
Do not attempt DIY cleanup of porous materials
Carpet, pad, and lower drywall in contact with sewage must be removed and disposed of — cleaning in place is not acceptable for Category 3.
Common causes in the Valley
Aging sewer laterals, tree roots in lines, municipal main backups during storms, and grease buildup are frequent triggers. Older Mesa and Phoenix neighborhoods see more lateral failures.
Health risks
E. coli, hepatitis, and other pathogens can persist on surfaces. Professional cleanup includes PPE, containment barriers, HEPA air scrubbers, and EPA-registered disinfectants.
Insurance — often requires an endorsement
Standard HO policies may exclude sewer backup unless you purchased a rider. If covered, document the event, plumber report, and all remediation line items.
FastDry's documentation helps carriers approve Category 3 scopes that DIY cleanup would not support.
Describe what happened — we'll dispatch a crew
Free for homeowners. One vetted crew, never shared. Insurance documentation included.
Dispatch a crew