Architects who are serious about saving water should consider the new ultra high-efficiency Stealth single-flush toilet that uses only 0.8 gallons of water per flush. The WaterSense–certified unit uses a technology that compresses the water in the bowl rather than the tank for a quiet, effective flush every time, the company says. Niagara Conservation, 800.831.8383; www.niagaraconservation.com