A sewage backup is not a plumbing inconvenience. It is a biological hazard in your home, and what you do in the first half hour meaningfully affects both the health risk and the size of the eventual restoration bill. This is the order of operations we give people on the phone while we are on the way.
First: stop adding water
This is the single most important step and the one most often missed. Every gallon that enters the drain system has nowhere to go and makes the backup worse.
- Stop using every sink, tub, shower and toilet in the house — not just the ones in the affected area.
- Stop the washing machine and the dishwasher immediately, mid-cycle if necessary. A washing machine discharging into a blocked line is one of the fastest ways to flood a basement.
- Tell everyone in the house. A family member flushing upstairs while you deal with the basement undoes everything.
Second: keep people and pets away
Sewage carries bacteria, viruses and parasites. Treat the affected area as contaminated, not merely dirty.
- Keep children and pets out of the area entirely.
- Do not walk through it and then track through the rest of the house.
- If you must enter, wear waterproof boots, gloves and eye protection.
- Anyone pregnant, immunocompromised or with an open wound should stay out of the area completely.
Third: cut power to the area if you can do it safely
If water is approaching outlets, appliances or the electrical panel, shut off power to that area at the breaker — but only if you can reach the panel without standing in water. If the panel itself is in the flooded area, do not approach it. Call an electrician or your utility.
Fourth: document everything before cleanup
Before anything gets moved or cleaned, photograph and video the affected area from several angles, including any damaged belongings. Homeowner policies vary considerably on sewage backup coverage, and some cover it only with a specific rider — but no claim goes well without documentation. Do this before you touch anything.
Fifth: call
Our emergency line is answered 24 hours a day, every day of the year, and in most of Montgomery and Prince George’s County we are on site within one to two hours. We do not charge an after-hours surcharge, so calling at 2am costs the same as calling at 2pm.
What not to do
- Do not pour chemical drain openers into a backed-up line. They will not clear a main-line blockage, and you have now added caustic chemicals to standing water someone has to work in.
- Do not repeatedly flush to "test" whether it has cleared. Each flush adds volume to a system that cannot take it.
- Do not run a shop vac rated for water only — sewage requires equipment and disposal handling that a household vacuum does not provide.
- Do not start tearing out drywall or flooring before documenting the damage and speaking to your insurer.
Afterwards: find out why it happened
Clearing the blockage stops the emergency; it does not explain it. Main-line backups have a cause — roots at a joint, a bellied section, accumulated scale, or a structural failure — and if the cause is not identified you will be doing this again.
A camera inspection after the line is cleared is how you find out which one it was, and it is included with our sewer line services.