The ROES-50 5-Stage Under Sink Reverse Osmosis Water Filter System by APEC WATER is a high-quality and NSF Certified water purification system that can remove up to 99% of contaminants from your tap water. With a capacity of 50 gallons and a filter life cycle of 6 months, this system is designed to provide clean and safe drinking water for your household. The 5-stage filtration process includes a pre-sediment filter, activated carbon block filter, ion exchange resin filter, deionization filter, and post-activated carbon block filter, ensuring that your water is free from harmful chemicals and particles. Easy to install under your sink, this water filter system is a reliable and efficient solution for improving the taste and quality of your tap water.