The Small House Catalog: toilet/sink combo, a space saver and if you didn't want to use it there's always the kitchen sink a few steps away; could be used in a skoolie, bus conversion, or trailer to save space and recycle sink water into the toilet…
This is great since we don't have any outdoor hose hookups! How to Build a Rain Barrel. A dual barrel system that uses atmospheric pressure to equalize the water volume in both rain barrels. Use the water from your rain barrels to water your plants.
Instructables for Showerloop: a water filtration and purification system that recycles shower water in real time, using only 10 liters of water per shower (normal shower = and a fraction of the energy (around one tenth) compared to a normal shower.
10 superbes idées écolo, déco et pratiques pour un quotidien responsable