Not to be too pedantic but not all waste water goes into the stack. The toilet does and the washing machine should but sinks, showers and dishwashers to flow to the drain.
If the toilet is the problem, it is usually the bend that has a blockage. As Marshy suggests, a hand will sort you out or you can use a long flexible item to push around the bend. It is possibly to buy an unblocker which is a long spring that you push through through the piping to dislodge whatever ''mass'' is causing the blockage.
Come to think of it both the loo and the kitchen sink have for some days been making gurgling noises which I suppose means there''s an airlock or something. I have tried using a plunger which makes a sarisfying noise etc but changes nothing. I have not bought an augur(?) - given my mortgage is in arrears not to mention other bills I am not spending a sinle penny if I can help it. Preserving what I can while my stbx runs up further debts....
What pixy says is right. If nothing is draining away then you have a problem outside. But all is not lost.
Have a look at the house on the same side that the stack resides. The same side as all the soil services. Like sinks, toilets etc. These big pipes dont run very far. There will be a manhole. Usually one ever two houses. Its the big rectangular thing in the garden or in the street. Perhaps not outside your house. But find it. If its in your garden, its yours. But this is what you need to do.
Go and lift it up. A big screwdriver is the best for this. And then empty the bath. And watch the flow. You should see a high flow of water. If you dont, then you will need someone with a rod. But a word to the wise. If you use a rod, never turn it anti clockwise when its extended. Always clockwise. Loosing it down a soil pipe is not a good plan. C.
Continuing the wikivorce home maintenance thread, is the toilet on the ground floor. A slow blockage in a sewer is rarely caused by the toilet but usually the kitchen sink and an accumulation of fatty deposits or a worse case scenario tree roots entering the sewer. If it is a ground floor toilet threading a hosepipe as far down as you can and running hot water through it may help.
The house owner is legally responsible for stack pipe and run down to the communal sewer
which is usually about 10 feet or so in the garden.
I recently had a house where sewage was coming up a rodding hole (6 inch disk) situated under the kitchen window. (tenant for some reason had removed this ????)
The house was the lowest on a slightly stepped terrace. The communal sewer ran down the centre of each garden until it reached the street. There was no manhole and so it is assumed that the rodding hole would allow poking until it met the communal sewer.
The sewer had blocked further down outside the gardens in the street. The result was that sewage backed up and escaped through the rodding hole with no lid.
In some ways the tenant was lucky because the sewage would have built up on the slope and eventually come out of the kitchen sink.
The tenant was screaming at me but we found no block in the system up to the communal run. The problem had to be further down the communal run into the main sewer.
Water boards are responsible for the main sewers. They are also responsible for communal runs .Diagrams for what they are responsible for are often posted on their websites. Anglian water has one.
In our case it took 4 attempts on separate days to eventually clear everything.
So if you are sure that it is not your toilet....sure that water runs freely to the communal sewer (often the manhole just outside the property) then call the high pressure jetting crew from the water board.
There is the possibility that it could be tree roots and not debris blocking the communal sewer. A camera sent down will check this. So the rule is dont build a shed or pond over the communal sewer as your garden will be vandalised with replacement pipe installation.
On another note !! When adding internal soil pipes to my house using internal connections to a soil pipe which had served a basin sink it was discovered that a brick had been left in the pipe from the original construction !!!