The short version: A sewage backup is a genuine health hazard — not a DIY cleanup. Keep everyone (and pets) away from the area, stop using water in the house, ventilate if you can do it safely, and call for professional sewage cleanup right away. Don’t touch the water or contaminated items.
Few home emergencies are as stressful — or as hazardous — as sewage backing up into your home. Beyond the mess and the smell, sewage carries bacteria and contaminants that make fast, professional cleanup essential for your family’s health. Here’s exactly what to do, and what to avoid, in the first minutes and hours.
First: treat it as a health hazard
Sewage is what restoration pros call “black water” (Category 3) — it contains bacteria, viruses, and other contaminants that pose real risks, especially to children, elderly family members, and pets. Your first job isn’t cleanup, it’s keeping everyone safe.
What to do right now
- 1. Keep everyone away Get family members and pets out of the affected area immediately and keep them out. Sewage is a health hazard.
- 2. Stop using water Don't flush toilets or run sinks, tubs, or appliances that drain into the affected line — it can make the backup worse.
- 3. Shut off water if it's overflowing If a fixture is actively overflowing, close its supply valve or your main water valve.
- 4. Ventilate if you safely can Open a window to help with fumes — but don't use household fans, which can spread contaminants.
- 5. Turn off HVAC Shut off central heating/AC so the system doesn't circulate contaminated air through the house.
- 6. Call a professional right away Sewage needs proper containment, removal, and sanitization — and the faster it's handled, the safer your home.
Sewage backup is a call-now emergency. Don't touch it — call Premier 24/7 for fast, safe sewage cleanup and sanitization across the Sacramento area. Call (916) 581-4874 — 24/7.
What NOT to do
- Don’t walk through it or touch it — not without proper protection. Skin contact with sewage is a real health risk.
- Don’t use household fans to dry it — that can blow contaminants and spread them through your home.
- Don’t flush toilets or run water that drains into the affected line until the cause is cleared.
- Don’t try to save contaminated porous items (carpet, padding) yourself — a pro decides what’s salvageable.
- Don’t assume it’s clean once the water’s gone — sanitization and verified drying are what actually make it safe.
What causes sewage backups
Knowing the cause helps prevent the next one. The most common culprits in Sacramento homes:
- Main sewer line clogs or breaks — the most common cause
- Tree-root intrusion in the sewer lateral, common with older, established trees
- Heavy storms overwhelming the system
- A failed sump pump during wet weather
Because Premier is also a full plumbing repair company, we can clean up the damage and fix the underlying cause — one local team, start to finish.
Insurance note: Standard homeowners policies often exclude sewer backups unless you added a sewer backup endorsement. If you haven’t, it’s an inexpensive add-on worth asking your agent about — especially on older lines or with big trees near your lateral.
How professional sewage cleanup works
Proper sewage cleanup follows a careful, documented process: contain the area immediately so contamination doesn’t spread, safely remove contaminated water and unsalvageable material, clean and disinfect every affected surface with professional-grade products, and dry the structure to a verified standard to prevent mold (that’s where structural drying comes in). Then it’s all documented for your records or insurance.
Why call Premier
Premier Restoration is part of Premier Rooter & Plumbing — the same local, family-operated team behind 570+ five-star reviews. We respond 24/7, handle sewage safely and thoroughly, fix the plumbing cause, and document everything. When it’s a sewage emergency, don’t touch it — call us.
Related restoration services
- Sewage Cleanup — Safe removal & sanitization
- Structural Drying — Dried to a verified standard
- Water Damage Restoration — 24/7 emergency response
Frequently asked questions
Is a sewage backup dangerous?
Yes. Sewage is 'black water' that carries bacteria, viruses, and contaminants posing real health risks, especially to children, the elderly, and pets. Keep everyone away from the area and call for professional cleanup rather than handling it yourself.
What should I do first during a sewage backup?
Keep family and pets away from the area, stop using water in the house, shut off the supply if a fixture is overflowing, turn off your HVAC so it doesn't spread contaminated air, and call a professional sewage cleanup team right away. Don't touch the water.
Can I clean up sewage myself?
No. Sewage requires proper protection, containment, removal, disinfection, and verified drying to make the home safe again. DIY cleanup risks your health and can spread contamination. Keep the area isolated and call a professional.
What causes sewage backups?
Common causes are main sewer line clogs or breaks, tree-root intrusion in the sewer lateral, heavy storms overwhelming the system, and failed sump pumps. A company that does both cleanup and plumbing can fix the cause, not just the symptom.
Does insurance cover sewage backup?
Often only if you added a sewer backup endorsement to your policy - standard homeowners policies frequently exclude it. It's usually an inexpensive add-on. We document the cleanup to the standard insurers expect so you have what you need to file.