Smart toilet system that uses shower water for flushing

The Grey Water Toilet System by Alison Norcott is a smart toilet system minimizes water wastage by allowing shower water to be utilized for flushing. When you shower drain water is collected and pumped into an in-wall tank, and when needed the toilet uses the in-wall tank of used shower water to clean the toilet. To avoid bacteria growth, the tank is discharged on a cyclic basis so that water isn’t stored for over twenty four hours. As an added safety precaution, the water is treated minimally via low powered ultrasonic irradiation. - Via + Source