The Aqua-pro Shower Filtration System is designed to produce the highest quality water possible with the least amount of pressure loss. Aqua-pro’s patented 2 stage filter cartridge substantially reduces chlorine and other chemicals present in tap water. Some water volume is lost in the filtering process that will result in 20% to 25% savings in water and heating expense. In compliance with California State law, this system has a maximum flow rate of 2.5 gallons per minute. The Aquasana adjustable shower head can be adjusted to the desired pressure while still conserving water usage.