Sewage Backup Cleanup
If sewage is coming up a drain, stop what you are doing and stay out of it. This is not a clean-up for a mop and a bucket. Water that has been through a sewer line can carry bacteria, viruses and parasites, and anything it touches has to be judged as contaminated.
It is Category 3 from the first minute
The industry standard, ANSI/IICRC S500, puts sewage in Category 3, the most contaminated class of water. Unlike a burst supply line, it does not start clean and get worse. It starts at the bottom. That changes every decision that follows: what can stay, what has to go, what the crew wears and how the area is cleaned.
Why drains back up
A clog in the line
Grease, wipes, tree roots growing into a joint and a collapsed section of older pipe all stop flow. Where the clog is decides who fixes it, so get a plumber or the utility to look before anyone assumes.
Heavy rain overwhelming the system
In a long storm, groundwater can seep into sewer lines and push more flow than they were built to carry. The lowest drain in the neighborhood backs up first, and in a lot of houses that is a basement floor drain.
Problems inside the house
A blocked branch line or a failed fitting can push water out of a tub, a floor drain or a toilet without anything wrong in the street. If only one fixture is backing up, the cause is often inside.
Sewage in the house?
Keep people and pets out of the area and call. We tell you what to expect on arrival.
Call (301) 786-0888What the crew does
Protect the crew and the house
Crew members put on gloves, boots, coveralls and respirators. Doors to clean parts of the house are sealed and foot traffic is kept to a single path.
Remove the liquid
Pumps and extractors take out the water. It goes into the sanitary sewer or a container, not onto the ground.
Remove porous materials
Carpet, pad, drywall, insulation and cabinet backs that soaked in sewage are cut out, bagged and removed. They cannot be cleaned to a safe level.
Clean and sanitize
Hard surfaces, framing and slab are scrubbed with a cleaner and then treated with an antimicrobial. The cleaning is repeated where contamination was heavy.
Dry
Dehumidifiers and fans dry what is left. Drying comes after cleaning, because it does no good to dry a surface that is still contaminated.
Verify
Readings confirm the structure is dry. Any odors that linger are traced and treated before the area is closed in.
What stays and what goes after sewage
| Material | Usual outcome | Why |
|---|---|---|
| Carpet and pad | Removed | Fibers absorb contaminants and cannot be cleaned to a safe level |
| Drywall and insulation | Removed | Porous, and wicks contaminated water above the visible line |
| Wood framing | Cleaned, sanitized and dried | Dense enough to clean if treated and dried in time |
| Concrete slab | Cleaned and sanitized | Hard surface, but pores hold contaminants until treated |
| Tile and sealed hard floors | Often cleaned in place | Smooth surfaces can be sanitized if the grout and subfloor are dry |
| Upholstery and mattresses | Usually discarded | Cannot be reliably sanitized |
Until the crew arrives
- Do not use the toilets, sinks, showers or washer if the drain line is backing up. Each flush adds more.
- Keep people and pets away from the affected area. Children and anyone with a weak immune system should stay out of the house if the backup is large.
- Do not run a household vacuum on it, and do not try to clean up with a mop.
- Wash your hands well if you touched anything. Change out of wet clothes and wash them separately.
- Call your plumber or utility about the line, and your insurer about coverage.
What a cleaned-up backup can still hide
Look at the baseboards, the bottom of cabinets and the edge of the carpet. A stain line on drywall that is higher than the standing water ever reached shows how far it wicked. A sewer smell that returns after cleaning means something porous was left behind. If the backup came from outside through a floor drain, check the next floor drain, the laundry area and any other low point. If water stood for more than a day before cleanup began, expect more material to come out than you first think.
Sewage backup questions
Is it safe to stay in the house?
For a small backup in a basement that can be sealed off, often yes, if people stay out of it. For larger events, or if the drain line is still backing up, you may want to stay elsewhere.
Can the carpet be saved?
No. After sewage, carpet and pad are removed. It cannot be cleaned to a safe level.
Who fixes the sewer line?
Where the blockage is decides it. Inside the house is yours to fix. Beyond that, ask the utility. A plumber with a camera can tell you where it is.
Will homeowners insurance pay?
Many policies cover a sudden backup only with a specific endorsement. Ask your insurer before work starts and keep photos and receipts.
Do you disinfect the whole house?
No. We clean and sanitize the affected areas and seal off the rest while we work. Cross-contamination is controlled from the start.
Related cleanup work
- Emergency Water Extraction Pumping the water out.
- Basement Flood Cleanup When the backup flooded a basement.
- Structural Drying & Dehumidification Drying after cleaning.