Why wont your toilet bowl go all the way down when flushed everything in the tank has been changed out and the water level is as high as it will go it flushed fine a week ago?

Answer 1

Something stuck in the drain, the main drain has collasped or has tree roots growing into it or the vent in the roof has become plugged. A good plunging is the first step. Next, fill a 5 gallon bucket with water and pour it in the bowl as fast as it will take it without overflowing. This may flush out a clog since it is a much larger volume of water than usual. Tree roots you can make a guess about depending on any trees that may be in the line of the drain. You can get root remover that you flush down the toilet that kills the roots. It may need to be cleaned to clear the line.

Another consideration- if the toilet was fine on a flush and now is "backing up" seek out any inspection chamber on your property, this is usually in a garden covered by a cast iron plate. Check if you can by lifting this access point that everything from the house is passing down, you may see this is blocked and could be an issue where the main drain is backing up to the property. If its clear using VERY soapy water have someone pour that down the toilet, it will seep through if there is a block and you may see in the inspection area the bubbles. Frequently things that block a toilet are the frames that hold toilet bowl cleaning blocks that have come loose and started to capture paper-waste on the way down or even female sanitary ware which frequently will catch on a small sewer fracture and cause a blockage. In these cases a jet wash may be the best way forward. Also check any other water outlet's that bathroom i.e. a hand basin, watch the water go down there. If its fast and the basin outlet is merged to the toilet (most are) then the sewer line is clear and the block is probably in the "S" bend of the toilet.