The Peak Alkalinity Marine/Boat/RV Unit is a non-electric mineral purifier for pure, better tasting water. This stylish and easy to use unit has a direct tap water filtering system and a built- in water flow control valve system. The multi-stage DUAL carbon filtration system kills bacteria and ensures your water is clean while also reducing sediment particles in the water, allowing for better tasting, safer water for consumption. With the Peak Alkalinity Mineral Water Purifier, you can enjoy natural alkaline drinking water with a pH of around 9.0-9.8. This user-friendly unit has a large, easy to read display and top-mounted controls which are simple to use!