Our Craft Brew 200 GPD Commercial Reverse Osmosis System is the ultimate system for the serious homebrewer. With 20" GAC Carbon Filters, dual TDS Meter, UV and our Craft Brew Water TDS Blending Valve, you will have complete control over the quality of your brewing water. And of course, when the water leaves the system, it is run through our ultraviolet sanitation station to ensure your water is bacteria free.