Features

• [Easy DIY Compatibility] Designed for standard under-sink cold-water connections and municipal tap water. This 3 stage under sink water filter system connects directly to most faucets with 1/2" or 3/8" FEMALE NPT threads. It does NOT reduce TDS and helps retain beneficial minerals. Not suitable for hot water; for well water, use with a pre-filtration system. Need to connect to a quick-connect faucet? Contact Waterdrop for free adapter fittings. No additional faucet is included.
• [Easy Filter Replacement] Replacement filters are easy to find and install. For WD-TSA / TSB 3 stage under sink water filtration system, search B0CM8MHWNT for WD-10PP, B0CM8KV1M9 for WD-10GC, and B0CM8SDWWD for WD-10CT
• [More Filters, Better Taste] This under sink water filter system comes with 3 filters and can realize 8-stage deep filtration to reduce PFAS, PFOA/PFOS, residual chlorine, fluorides, silt, rust, cyst, etc. Its resin reduces fluorides. The CT filter has passed IAPMO certification to reduce residual chlorine and improve taste, thereby ensuring every drop is pure and healthy
• [Note On Flow Rate For Deep Purification] After full 8-stage filtration, purified water flows more slowly than direct tap water. Upgraded in 2026, the PP filter uses larger outer pores and finer inner pores to capture particles step by step, helping reduce clogging and maintain a faster, steadier flow rate. This design ensures sufficient contact time for thorough reduction of PFAS, fluoride, and bad taste, while still delivering a steady stream (max flow 1.5 GPM) that fills a standard 12-oz glass in about 4 seconds
• [No Leaking Or Cracking With Highly Precised Technique] The under sink water filter adopts strong materials with an upgraded design. In addition, the age-resistant and freeze-resistant materials make the system twice thicker. The under counter water filter system for kitchen has also passed 400 psi burst pressure, 100,000+ pulse tests at 150 psi, and static tests at 300 psi. These tests prove that the durable integral design clears up worries about cracking cases and leaking issue
• [Solve Clogging Problem] By upgrading the filtration area, our filter now provides a 20X increase in dirt adhesion area, enhancing filtration capability while minimizing the risk of clogging
• [Lifespan Of Up To 18 Months] The three under sink water filters have lifespans of 6 months, 8-12 months, and 12-18 months, respectively. Before going on vacation, please Put the filters in separate sealed plastic bags, and store the bags in your refrigerator (NOT the freezer) to keep it fresh in 30 days
• [3min Installation, 3s Replacement] This under sink water filter system works perfectly with 3/8” and 1/2” cold water tubes. The under sink water filtration system is a simple DIY. With innovative push-to-connect fittings, the installation of the under sink water filter system takes less than 3 minutes. In addition, the twist-and-lock design lets you replace each filter in just 3 seconds
• [Cannot Filter Well Water or Hot Water] Only a cold-water source should be used to power the filter. This system is designed for Municipal Tap Water. If using well water as the source, please make sure the feed water has been through a pre-filtration system. For the solution with a pre-filtration system, please search for WD-PFK
• [Good Service] With a stable water flow, this under sink water filter provides all-round protection for drinking or usage. The carbon block is made from natural coconut shells. Please confirm whether you are allergic to it. TDS is not a professional way to measure the water quality. Essential Minerals, Calcium, Potassium, Sodium, Magnesium... These essential minerals are dissolved solids, PPM will not be dropping if you test with a TDS meter. Waterdrop undersink water filtration system is keeping all those minerals, but removes elements that are harmful to your body

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