First you need to get as much water out as you can from the pan into a bucket so that you can use a wire or plunger to try and shift the blockage. Next, lift the drain cover nearest to the toilet to see if it is of water. If so, the blockage is further along the soil pipe. If the manhole is empty, the blockage is in the soil pipe from the toilet to the manhole or in the toilet pan. Use drain cleaning rods or call out a drain cleaning company if the blockage isn’t in the toilet.

Toilet plungers work in the same way as the sink ones but the head is shaped to fit a toilet bowl. You can also hire plungers with a pump action handle that are effective at forcing water around the pan,for clearing blockages.compacted blockages,may need flexible metal wire likea wire coat hanger if nothing else is at hand, . Feed the wire into the pan and wind it until the wire meets the obstruction. Pull out the blockage and flush the toilet several times.If the water still doesn’t flush away, call in a plumber !