Seagull IV X-1F Drinking Water Purifier - Marine Model Removes Bad Taste and More: chemical, aesthetic and microbiological contaminants Compact, 300 series stainless steel housing encases proprietary Structured Matrix technology Requires NO chemicals, large storage tanks, hold-time or double-processing Economical operating costs at only pennies per gallon Offers great tasting, safer water for drinks, ice-cubes, beverage and food preparation