The Marley WaterGard helps reduce wastewater and overall water usage on packaged evaporative cooling products by using membrane technology to pre-condition cooling tower water and limit salt (i.e. chlorides, calcium carbonate) introduction into the tower. The salt concentration of makeup (supply) water typically controls how much water needs to be blown down, or drained from the system, to limit corrosion and scale tendencies of the cooling water. Reducing this concentration with WaterGard allows safe cooling tower system operation at higher cycles of concentration (less blowdown). Available in North American markets and offered in a variety of sizes based on the capacity of the cooling towers, features include an integral pump, bypass function and an optional carbon system for chlorine filtration.