Waterdrop - RC 4 EZ-Change Premium Water Filter Replacement, Replacement for Culligan - White

The Waterdrop TSA under sink water filter system features 8-stage deep filtration with three filters to reduce PFAS, PFOA/PFOS, chlorine, fluoride, heavy metals, rust, and more, delivering cleaner, better-tasting water. Recommended by National Geographic, it has a compact, space-saving design with quick-connect fittings for easy DIY installation in 3 minutes and 3-second filter replacement. Built with durable, age-resistant materials, it passes rigorous pressure and durability tests to prevent leaks or cracks, while its upgraded filtration area minimizes clogging risks. With filter lifespans of up to 18 months, the TSA ensures long-lasting performance for municipal tap water, though it is not designed for well or hot water.

A smart choice of over 2,000,000 American families. The Waterdrop G3 series RO system has been a star product among Waterdrop products, which has become a first choice of 2,000,000 American families and widely praised by users and social media thanks to its smart design.

The Waterdrop G3P600 is a tankless under sink reverse osmosis system with 8-stage filtration, certified by NSF/ANSI 42, 58, and 372, as well as FCC, EU, and UKCA standards. Tested by SGS, it effectively reduces TDS, PFAS, fluoride, heavy metals, salts, and other contaminants, delivering up to 600 GPD with a 2:1 pure-to-drain ratio. Its smart display faucet provides real-time TDS monitoring and filter life tracking, while the sleek tankless design saves 70% under sink space and allows quick 3-second filter changes without tools. This system requires under-sink electricity and offers fast, stable water flow ideal for daily drinking and cooking.