Drain line clogged. Toilet itself may be problem.
If you really mean it flushes but the water does not run away, then the septic tank is plugged.
Performing routine septic tank maintenance will prevent your septic tank from backing up and flooding your yard. If a septic tank backup happens, it could cost you thousands of dollars to fix. Use a septic tank kit that you can pour down the toilet once a month. It will contain the necessary enzymes needed to breakdown solid waste material inside the septic tank, keeping fluid flowing freely through the drainpipe. Avoid disposing of materials such as Q-tips, tampons or excessive toilet paper, as these items will clog your system and are hard to break down. Consider using septic system safe toilet paper.
To vent off odors emanating from the septic/sewer system and to allow the toilet to flush correctly and the other drains to empty correctly.
This all depends on the condition of the septic tank. Its like asking, how long is a piece of string
You need your septic tank cleaned out.
If you really mean it flushes but the water does not run away, then the septic tank is plugged.
Toilet / piping to and from the toilet and sinks and tubs and showers
The drain is plugged between the tub and the sewer or septic or in the case of the septic system, the tank may be full. The toilet had to go somewhere and the tub was available.
Performing routine septic tank maintenance will prevent your septic tank from backing up and flooding your yard. If a septic tank backup happens, it could cost you thousands of dollars to fix. Use a septic tank kit that you can pour down the toilet once a month. It will contain the necessary enzymes needed to breakdown solid waste material inside the septic tank, keeping fluid flowing freely through the drainpipe. Avoid disposing of materials such as Q-tips, tampons or excessive toilet paper, as these items will clog your system and are hard to break down. Consider using septic system safe toilet paper.
1/8th of an inch per foot
An RV toilet is designed to be mounted over a holding tank. They use almost no water which at first might sound appealing, but unless you have a septic tank under your bathroom it would be bad news for home installation. Unless modified, an RV toilet would not be able to get the solid waste to your home septic system. A home toilet uses the force of the water to move the solid waste to your septic tank. Look for a low flush toilet or a composting toilet instead.
If you are on a septic system, it is plugged.
You have a main line blockage and or a full septic tank if you have a septic system. You need to have either your sewer line roto rootered and or your septic tank pumped if on a septic system.
Not generally affect it badly, however depending where the leak is , it could rot your bathroom floor.
My cats play with toilet paper. They scratch it, unroll it and roll in it. I can't get them to stop, but they don't eat it. You have a strange CAT. Septic Safe toilet paper is recycled paper with no chemicals. Should be safe to eat as long as it hasn't been used in the toilet or septic tank.
That would depend on how far it was to the septic tank.
This depends on the useage of either system. If you are going to be using it a lot and for a prolonged period of time, the the better option would be a septic tank system. Otherwise if you will be using it for a short period of time, for example, for just the weekend, then a compositing system would be better,