Look up regulations for ...

Look up regulations for recycled water in your area. At home, I recycle rainwater and laundry water directly by filling a reservoir, adding a shot of bleach, then pumping the water to a basement toilet automatically with each flush. It's an experimental system I've used for 5 years as a way to reduce stormwater and wastewater inputs. Have not had issues with grime building up in toilet tank and water in toilet is a light yellow color at most. There might be concerns about splashing of recycled water onto bottom during defecation, but at least the bleach helps. This is a personal system that could be easily adapted to only urinals. As for gardening, plants will benefit from non-chlorinated recycled rain water as laundry water will clog soil if not pre-filtered.