Prescribed For Life's Zero-Waste 5-Stage Ultra Filtration (UF) Water Filter System is guaranteed to reduce the level of contaminants found in common drinking water sources. The Zero Waste Ionized Alkaline UF Under Counter Water Filtration System replenishes the natural mineral levels in the water supply, as well as balances the pH levels to a healthy alkaline state. It produces great tasting water, equivalent to a fresh spring and is the best UF water filtration system on the market today!The Prescribed For Life Ultra Filtration Drinking Water System has become a consumer favorite since it is a perfect "green" alternative to traditional filtration systems, which utilize waste water byproduct through the ultra filtration membrane and multiple stages of filtration. This recycling of water waste leaves individuals susceptible for multiple health risks including gastrointestinal discomfort. The Zero Waste UF Water Filter System is a direct-flow system, which utilizes an endless supply of healthy great tasting water that is purified on-demand in an easy-to-install under counter water filtration system.All Prescribed For Life Ultra Filtration Drinking Water Filter Systems utilize the latest hollow fiber membrane technology and include an easy-install kit. We offer a wide variety of designer faucet options and styles to accommodate any kitchen or sink area. Please note that the actual faucet setting is not included with purchase. Consumers can appreciate the quick-change filter replacements options, which incorporate individually wrapped filter cartridges- just twist them into place- no mess! Filter Stages:Stage 1 (6 months): The Pre-Carbon stage reduces the levels of chlorine and organic chemicals found in water supplies.Stage 2 (1 year): The UF Hollow Fiber Membrane stage reduces the amount of lead, bacteria, trace chemicals, tiny suspended particles, giardia, and cysts, which can pass through the carbon filter in their small state.Stage 3 (1 year): The Mineral & Alkaline Balancing stage naturally rebalances the water supply to purify and create a healthy balanced alkaline pH state.Stage 4:The Natural Granular Carbon stage finalizes the filtration process with Coconut Husks giving your water the great taste you crave!Stage 5:The last stage is the fine particle filter that will capture the remaining materials or debris for the most crisp and delicious alkaline water available right on your tap!