UltraPURE® is the best water management system available in a swim spa today. UltraPURE® is more than just an ozone generator; it’s a fully engineered, patented water management system similar to the systems used throughout European municipal waste facilities. It has a dedicated filtration and water management system, processing about 10,000 gallons per day. After filtering the water, this system vigorously mixes ozone and water three times to ensure ozone comes in contact with every drop of water – ozone doesn’t just kill bacteria, it burns it up! That means the water in your spa is not just clean, it’s crystal clear.