Toilet water is not for drinking.
Drinking water is not for toilets.

Water that has been purified by the constructed wetlands, ultraviolet disinfection, and by the aquatic and soil filters in the greenhouse will be reused for flushing toilets. Before reuse, this water will be disinfected with chlorine, and upon flushing, it will become truly “recycled” water as it enters the wastewater treatment system to be naturally purified once again.

This type of reuse has tremendous potential when used within installations in which toilet flushing represents the greatest water use, such as in schools .