A simple explaination is this is because the other toilet can empty its contents into the plumbing under the house and has more time to move to the septic. On the one nearest the tank, the pipes leading to the tank are already full (groundwater backup) and the toilet contents have nowhere to go.

Can heavy rain cause my toilet to back up?

Heavy rains also affect the sewer line causing backup problems. The accumulation of buildup and high water levels in the municipal sewers overloads the sewer system, and the wastewaters may begin to flow back to your home.

Why is my toilet not flushing but not clogged?





If your toilet isn’t flushing all the way, it’s most likely because of one of these problems: The water level in your toilet tank is set too low. Problems with your flapper. A clog in the toilet, flange or drain.

When I flush my toilet nothing happens?

If you push the flush handle and nothing happens, you may have a broken chain on your hands. For example, inside your toilet tank are a flapper and a chain. When you flush, the movement of the handle pulls the chain, which in turn lifts the flapper. As the flapper moves up, it signals the toilet to drain.

Can sewer back up into the washer?

Washing Machine – If the water draining out of the washing machine causes the toilet to overflow or backs up into the tub or shower it could be the sewer main at fault. Note: This could just be a washing machine and shower problem and not a sewer drain clog.

How do you fix a toilet that won’t flush without water in tank?

To do this:

  1. Lift off the toilet tank lid.
  2. The water level adjustment rod connects the float cup to the fill valve. Twist the screw on top of the water level adjustment rod clockwise. …
  3. Flush the toilet and let it refill to test the water level.




How do you fix a toilet that doesn’t flush completely?

Flush the toilet with the tank open and watch the water drain into the bowl and fill back up. If the tube stops adding water before the float reaches the fill line, then your toilet won’t be able to perform a full flush. Adjust the float by moving its position on the arm that connects it to the refill tube.