The stormwater that falls on the roofs of Environment-3 and Environment-2, as well as nearby graded parking lots, is directed into the constructed wetlands systems. This stormwater runoff is discharged into a vertical flow system. As the runoff slowly flows through the system, wetland plants act as natural filters to cleanse the water and remove contaminants. The recycled non-potable water is then stored in a cistern that sits below the wetland, before being pumped into EV-3 to flush toilets and water the living wall and garden courtyards. This innovation reduces the need to use potable water.