[Sloth]

The water pump in a washing machine could be used to pump water from the washer to the storage tank, where it is then piped back down to fill the flush toilets, so that the wash water is used twice.

Good idea, but having seen the condition of washing mashine discharge pipes, I suspect that the dissolved detergents might deposit all over the toilet valves & supply pipes and cause problems.

[Orbiting_Rosie's_Head]

Good idea, but having seen the condition of washing mashine discharge pipes, I suspect that the dissolved detergents might deposit all over the toilet valves & supply pipes and cause problems.

Didn't know that. Perhaps a special kind of detergent might help.