[ Trusted Certification ] Tested and certified by IAPMO R&T against NSF/ANSI 42 & 58 & 372 standard, and tested by SGS to reduce harmful substances. [ Advanced RO Filtration ] This X8 undersink reverse osmosis water filter effectively reduces Chloride, Lead, TDS, Fluoride, PFOA, PFOS, Sand, Odor, Taste, Salt, and more. It boasts a 9-stage filtration including 0.0001μm RO membrane to guarantee water safety and quality. [ Tankless Ease ] This reverse osmosis water system has a compact and stylish look. Compared with the traditional tank RO system, it saves 70% undersink space. You can effortlessly replace the filters in 3s without moving the system or using any tools. 【Note: This reverse osmosis system requires under-sink electricity.】 [ Efficient Filtration ] The reverse osmosis water filter can filter 800 gallons of pure water per day. By its 2:1 low drain ratio, this system can produce only one cup of wastewater for every two cups of pure water, which is ideal for daily drinking and cooking. [ Intelligent and Precision ] This tankless RO system boasts a smart faucet to track water quality with real-time TDS monitoring. And its filter life reminder function can help you replace filters in time to ensure your drinking water quality. The 24-month RO filter lifespan saves you the hassle and cost of frequent replacement. Please note: Faucet installation requires drilling holes in the countertop. Waterdrop X8-Basic Reverse Osmosis System, NSF/ANSI 42&58&372 Certified, 800 GPD Tankless RO Water Filter, 9-Stage Filtration Undersink RO Filtration System, 2:1 Pure to Drain, Reduce PFAS, BPA Free