Dairy processing plants have a unique opportunity for water reuse: Condensate of Whey or “COW” water, is the water generated when milk products are evaporated or concentrated. Because milk is almost 90% water, a lot of cow water may be available for reuse. For example, a dairy plant producing 50,000 pounds of cheese a day requires about 500,000 pounds of raw milk and generates over 50,000 gallons of COW water for each day of production. That’s almost 20 million gallons of COW water annually. The economic and environmental benefits of reusing this water is significant both in terms of reducing fresh water requirements as well as the load on the wastewater treatment plant.