What to Do During a Sewage Backup (Before the Plumber Arrives)
A sewage backup is stressful, unpleasant, and on some level alarming. The good news is that the actions that matter most in the first hour are simple, and doing them in order will limit the damage and make both the cleanup and the insurance claim go more smoothly.
1. Stop adding water to the system
The moment you notice a backup, stop running water anywhere in the house. That means no flushing toilets, no sinks, no showers, and above all no running the dishwasher or washing machine. Every gallon that goes down a drain right now has nowhere to go but up through the lowest opening, which is usually the basement floor drain or a basement toilet or shower.
If other people are home, tell them right away. Most backups get worse because someone upstairs flushes a toilet without knowing what is happening in the basement.
2. Keep people and pets away from the water
Sewage water, what restoration companies call black water or Category 3 water, carries bacteria, viruses, and parasites. Treat it as a health hazard, not just a mess.
- Keep children and pets out of the affected area entirely
- If you have to go near it, wear rubber boots and waterproof gloves, and wash thoroughly afterward
- Do not wade through standing water if it has reached any electrical outlets, cords, the furnace, or the water heater. If in doubt, shut off power to the basement at the breaker, but only if you can reach the panel without stepping in water
3. Protect what you can, quickly
If it is safe to do so, move undamaged items up and out of the water: boxes, furniture, anything stored on the floor. Lift the corners of area rugs. Get anything with sentimental or high dollar value clear first. Do not spend more than a few minutes on this, and do not put yourself in the water to save possessions.
4. Document everything before you clean up
This is the step people skip, and it costs them on the claim. Before you move or remove anything:
- Take wide photos of each affected room and close ups of damaged items
- Photograph the water line on the walls and on furniture
- Write down roughly when it started and what was happening, such as heavy rain, a specific fixture, or nothing obvious
- Keep a running list of damaged items as you go
5. Call your insurance company
Call before you hire anyone or throw anything away. Ask specifically:
- Is this covered? Sewer and drain backup is usually a separate endorsement, not part of a standard policy, so confirm whether you have it
- Do they require a specific restoration company, or can you choose your own
- What is your deductible for this type of claim
If you do not have backup coverage, you can still proceed, you will just be paying out of pocket, which makes the next decision about professional cleanup more significant.
6. Call for the plumbing side
Insurance handles the damage. You still need someone to find and clear the cause so it does not happen again the moment you use water. When you call, tell us:
- Which fixtures backed up
- Whether it is still backing up or has receded
- Whether it followed heavy rain
- Whether this has happened before
That information helps us arrive with the right equipment. In most cases we will clear the line first to get you functional, then run a camera inspection to identify the cause, whether that is roots, a break, a blockage, or a problem at the municipal main. Our guide on why basement drains back up in the rain covers the common causes.
7. Cleanup and drying
For a small, contained backup on a bare concrete floor, careful cleanup with disinfectant is possible on your own. For anything that has soaked carpet, drywall, or stored belongings, or anything larger than a small area, a professional restoration company is the right call. Porous materials that have touched sewage, such as carpet, padding, drywall, and particleboard furniture, generally cannot be salvaged and need to come out to prevent mold. The faster the space is dried, the less secondary damage you get.
Preventing the next one
Once the immediate problem is solved, ask about longer term protection based on what the camera found:
- A backwater valve on your lateral if the cause was a surcharged municipal main
- Root treatment or lining if the cause was root intrusion
- Footing drain disconnection if stormwater was entering the sanitary sewer
- A simple annual or every other year cleaning if the line is sound but prone to slow buildup
Howell Sewer & Drain provides emergency sewer service for active backups across Howell, Brighton, Hartland, Pinckney, Fowlerville, and Genoa Township. Call 810-484-0748.