eli5 Is there a reason the waste water like from showers can’t be filtered through pipes and used for toilet water?

Question

eli5 Is there a reason the waste water like from showers can’t be filtered through pipes and used for toilet water?

In: 797

Answer 1

There is actually a section on this in the International Plumbing Code. I’ve not done a system like this, but it involves storage tanks. Self flushing timers for the storage tank, screens, and even a different color of water line for the water. Instituting a system would be incredibly expensive, and like most things, won’t be done en masse until there is a good financial reason to do so. Right now clean water is just too cheep for large scale adoption