Why is sewage cleaned more strictly than clean water?
Sewage contains waste and bacteria, so the materials it touches are treated as contaminated. Porous materials cannot be cleaned to a safe standard, which is why they are removed. Hard surfaces are cleaned and disinfected, and the room is dried before it is returned to use.
Clean water is an inconvenience when it sits on a floor. Sewage is a hazard to anyone who breathes it, touches it or handles the items it touched. The distinction shapes everything the crew does, from the protective equipment they wear to the order in which they remove each item.
Porous materials are the central issue. Carpet, pad, drywall and cardboard hold the liquid and its contamination inside their structure, and cleaning them on the surface does not remove it. Hard surfaces such as sealed tile or metal can be scrubbed and disinfected, and the technician tests that the cleaning has been effective before drying.
Can I clean up a sewage backup myself?
It is safer to leave the room to the crew. Household cleaners do not disinfect sewage, and a homeowner who scrubs the material can spread it into the air and onto other surfaces. Keep people out of the room and call for the cleanup.
A homeowner who tries to clean a backup usually mixes products, stirs up the material and moves it around the room. The risk of exposure rises with every step, and the materials that should have been removed are often left in place because they look clean on the surface.
If you touch the material by accident, wash your hands and any exposed skin with soap and water, and tell the technician. Do not use the room's fans, which spread the material, and do not run the room's air conditioning until the crew has checked it.
What will be removed and what can be saved?
Carpet, pad, unsealed wood, cardboard, paper, upholstered items and wet drywall are removed. Sealed hard surfaces, solid framing and metal can be cleaned, disinfected and dried. The decision is made on each material and written down.
A carpet that has taken sewage cannot be disinfected to the standard needed, and its pad goes with it. A wood floor that is sealed may survive the cleaning, but the boards must be checked for swelling and the subfloor must be opened if the water got under them.
Drywall that was wet with sewage is removed to a height that includes a margin above the visible line, because the liquid wicks upward. The technician explains the margin and the reason for it, and records the cut line in the file.
How do I keep the household safe while the crew works?
Keep everyone out of the affected room and the rooms the barrier covers. Keep pets out and do not return to the room until the technician says it is safe. Wash your hands after any contact, and keep food and drink away from the area.
The crew sets barriers, uses protective equipment and runs the work in one direction, which keeps the contamination inside the zone. The household is asked to use another bathroom and to keep doors closed while the work is under way.
Ask the technician how long the room will be out of use and when the clean-up will be checked. The room stays closed until the readings and the cleaning checks are complete, and the household is told when it can return.
Who fixes the drain that backed up?
The drain is repaired by a plumber, and the restoration crew does not do that repair. The technician can trace the path of the blockage and the likely cause, and can tell you what the plumber should check. A backup that repeats after the cleanup needs the drain fixed before the room is finished.
A backup can come from a blockage in a branch line, a problem in the main sewer connection or a vent that is not drawing properly. Only a plumber can confirm which, and a camera inspection is often the fastest way to find it.
Ask for the plumber's written findings and keep them with the cleanup file. An insurer or a future buyer may ask whether the cause was found and repaired, and the file should show that it was.