High Efficient and High Power Toilet TOTO

• E-Max® is a 1.28-gallon flush based on our legendary, computer-designed G-Max® gravity flushing system. E-Max utilizes simple, efficient engineering to save 20 percent more water than a 1.6 gallon toilet and 63 percent more water than a 3.5 gallon toilet.
• A partnership program sponsored by EPA, seeks to protect the future of our nation's water supply by promoting water efficiency and enhancing the market for water-efficient products, programs, and practices
  
  WaterSense will help consumers identify water-efficient products and programs. The WaterSense label will indicate that these products and programs meet water efficiency and performance criteria. WaterSense labeled products will perform well, help save money, and encourage innovation in manufacturing.

From TOTO USA