Main sewer line backed up right after moving in
A sudden main sewer line backup immobilizes every drain, toilet, and appliance in the house while forcing homeowners to wait indefinitely for an emergency technician. Dealing with active flooding with young kids in the home makes it difficult to secure immediate repairs, document the damage properly, and figure out whether warranty coverage or insurance applies.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1checking home insurance policies for backup coverage
- 2reading builder warranty fine print and contacting emergency hotlines
- 3getting buckets ready for toilets and documenting damages with photos and videos
- 4hiring a plumber to perform a sewer scope and save the video
- 5Drying water immediately and placing something underneath
- 6Running a snake and using a camera to inspect the pipes
- 7Hiring an independent plumber to re-inspect and camera the line
- 8Getting hydrojetting treatment done independently
- 9Hiring a professional plumber to snake the line
- 10Renting a 100ft snake from Home Depot to clear the clog yourself
- 11Running a camera inspection to check for roots or pipe damage
- 12Monitoring the sewer line for clogs or slow drainage
- 13Hydro-jetting the pipe periodically to clear sediment
- 14Waiting for the yard to be dug up to find out the cause
In their words
Unedited, most upvoted first, each linked to the thread it came from.
“My basement toilet backed up and flooded my suite for the 3rd time this year.”source ↗
“If you took possession of a house and within a month, the main sewer line flooded, would that be part of the builder’s warranty?”source ↗
“With the main sewer line being part of our home’s internal plumbing system, this means that every toilet, sink, shower, and drain in the house is affected. We shut off the water. But it’s 830pm and we have young kids.”source ↗
“We called the emergency line and they said they will dispatch a technician to take a look. No real time line. He will get here when he gets here.”source ↗
“Anything we should do? We took pictures and videos. But anything else we’re missing?”source ↗
“Blockage in our front yard service line from the sump ejector.”source ↗
“Some of my pipes were rusty and while the guy left to get a part, I heard water start to flow out. It was stable before.”source ↗
“I have also been having issues with my dishwasher draining - the motor and dishwasher itself is fine, it will start to drain but senses overflow and stops.”source ↗
“I had a similar issue with the dishwasher a couple months ago, and a week later replaced the motor thinking it was that. Dishwasher ran fine for a few weeks, then stopped draining again.”source ↗
“Sewer main backed up on 4/24. I had a professional plumber come to snake it.”source ↗
“I had backups again on 6/22, 8/5, and now 9/10.”source ↗
“The backups on 6/22 and 8/5, I rented a 100ft snake from Home Depot to take care of it but the latest one I called a different plumber because I didn't know if there was something bigger happening.”source ↗
“I’m under contract on a house (MI) and had a sewer scope done.”source ↗
“The inspector has now confirmed there is a belly/low spot from about 5–18 ft, caused by inconsistent slope.”source ↗
“Any plumbers here, would a ~13 ft belly with more than half-pipe standing water be considered a serious issue, or something you would monitor unless clogs/slow drainage start happening?”source ↗