How can I stop condensation forming on my toilet?

The water filling my system is so cold that a lot of condensation forms on the outside of the toilet's tank. There is enough for the water to fall onto the floor, which is slowing causing damage.

Is there a way of stopping this? What could I do to make sure the water being used by the toilet is not so cold?
Bill, December 2003


done
Empty the cistern (tank) dry it out and use waterproof glue to fix polystyrene sheet, about 1 cm thick, to the inside of the tank. This will insulate the cold water from the walls of the cistern and so stop condensation.

Mark Atherton, March 2004