No unless you want to shower with your sewerage. The sewer line must be unblocked first.
Main line stoppage is a clogged drain line.
A 3 or 4 inch pipe sticking straight up out of the ground? This is the clean out for the sewer line. If sewage is coming out of it, this means the sewer line is clogged or collapsed from there to the main city sewer. If you have a septic tank, the tank is full and needs to be pumped out.
The drain from the toilet to the main drain is plugged and the branch to the shower is not. If the main floor toilet flushes, it is between the two toilets and not between the house and the sewer.
Sounds like the main pipe is clogged. That's the big drain pipe that all three (toilet, shower, sink) are hooked too. When you plunge the tiolet it pushes back up the shower and sink instead of going down the clogged main pipe. The main pipe might need to be roto-rootered out. You could try some super heavy duty, pour in drain cleaner first. It might work.
Yes, it is one of the main. There is a lot of untreated sewage.
The main line drain is clogged or septic yank needs clean out.
If there was a blockage and the snaking cleared it than you should be back in business.
The obvious and main problem (and reason to keep your sewer lines clean) is because a backed-up sewer line means that sewage can get backed up into sinks and bathtubs. This is unsanitary and a health hazard. A broken sewage line is costly to repair.
The main line has to be clogged or collapsed. Under the toilet is just the easiest place for it to go. Have a plumber run an auger through the line. If you have a septic tank instead of city sewer than possibly the tank is full and needs to be pumped out.
If the existing sewer line is lower than basement grade (does it go into the basement floor and out of the house?) you can just connect in to the existing drain. By code, sewer lines must have a slope of 1/4 inch per running foot, meaning that raw sewage will run AWAY from the main plumbing stack of the house. If the sewer line is ABOVE the level of the basement plumbing fixtures, you will need to purchase and install a pump check-valve, and tank to install any plumbing below the house sewer line. If you have any questions, contact a licensed plumber to find out the needs of your home.
The main drain line in a plumbing system is designed to carry wastewater and sewage away from a building to the municipal sewer system or septic tank. Its purpose is to ensure proper drainage and prevent backups or clogs in the plumbing system.
It really just depends on the type of insurance policy you bought. If you bought the HO3 All risk Home insurance policy, you may have coverage for both the sewage line and the resulting damage. You'll need to check your policy or contact your insurance agent to find out. Under Most homeowners Insurance forms, HO1 and HO2, Main Sewage lines maintenance and repair are not covered. However, if you elected to purchase coverage for accidental water discharge. Although the sewage line itself might not be covered, ensuing damage would be covered, but only after repair of the causing factor (the faulty sewage line).