--- product_id: 465852711 title: "PureDrop RTW5AK Reverse Osmosis Water Filter System with Alkaline Remineralization Filter, 6-Stage Under Sink RO System with Patented Top-Mount Faucet and 3 Extra Pre-Filters" brand: "puredrop" price: "¥158018" currency: JPY in_stock: true category: "Pure Drop" url: https://www.desertcart.jp/products/465852711-puredrop-rtw5ak-reverse-osmosis-water-filter-system-with-alkaline-remineralization store_origin: JP region: Japan --- # 6-stage filtration for ultra-pure water No electricity needed, runs on water pressure Patented top-mount faucet for easy install PureDrop RTW5AK Reverse Osmosis Water Filter System with Alkaline Remineralization Filter, 6-Stage Under Sink RO System with Patented Top-Mount Faucet and 3 Extra Pre-Filters **Brand:** puredrop **Price:** ¥158018 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your hydration game with PureDrop’s sleek, silent, mineral-rich water system! ## Quick Answers - **What is this?** PureDrop RTW5AK Reverse Osmosis Water Filter System with Alkaline Remineralization Filter, 6-Stage Under Sink RO System with Patented Top-Mount Faucet and 3 Extra Pre-Filters by puredrop - **How much does it cost?** ¥158018 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/465852711-puredrop-rtw5ak-reverse-osmosis-water-filter-system-with-alkaline-remineralization) ## Best For - puredrop enthusiasts ## Why This Product - Trusted puredrop brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Installation:** Patented top-mount faucet installs entirely from above the counter—perfect for tight spaces and rentals. - • **Whisper-Quiet Operation:** Runs silently on household water pressure—no pumps, no noise, no interruptions to your flow. - • **Fridge & Ice Maker Ready:** Includes fittings for stable water flow to refrigerators and ice makers—fresh, chilled hydration anytime. - • **Smart Maintenance Design:** Color-coded filters and 3 extra pre-filters make replacements quick, easy, and budget-friendly. - • **Pure, Mineral-Rich Hydration:** 6-stage RO + alkaline filter delivers crisp, balanced water that tastes like natural spring water. ## Overview The PureDrop RTW5AK is a 6-stage under-sink reverse osmosis water filtration system featuring an alkaline remineralization filter that restores essential minerals for better taste. Its patented top-mount faucet allows easy installation from above the counter, ideal for compact spaces. Operating silently without electricity, it uses household water pressure and includes color-coded filters plus 3 extra pre-filters for low-maintenance, cost-effective upkeep. Ready for refrigerator and ice maker connections, it delivers up to 50 gallons of purified water daily. ## Description PureDrop RTW5AK Reverse Osmosis Water Filter System with Alkaline Remineralization Filter, 6-Stage Under Sink RO System with Patented Top-Mount Faucet and 3 Extra Pre-Filters - desertcart.com ## Features - Clean Water with Added Minerals: 5-stage RO filtration helps reduce PFAS, lead, arsenic, chlorine, heavy metals, and TDS, while the 6th-stage alkaline remineralization filter restores essential minerals for smoother, more balanced water that tastes more like natural spring water — without the flat taste common in standard RO systems. - Easy Top-Mount Faucet: Patented oval-nut faucet installs entirely from above the countertop, so there’s no awkward under-sink installation or hard-to-reach connections. Great for apartments, rentals, RVs, and tight cabinet spaces. - Quiet Operation — No Electricity Required: Runs entirely on household water pressure without pumps or electricity for quiet, reliable everyday operation without disrupting coffee prep, late-night water use, or daily kitchen routines. - Easy Filter Changes & Lower Maintenance Costs: Features color-coded filter stages to make filter changes quicker and easier and includes 3 extra pre-filters to help extend RO membrane life, while the modular filter system lets you replace filters individually for easier, lower-cost maintenance. - Refrigerator & Ice Maker Ready: Includes refrigerator-ready fittings and pressure-regulating components for stable water flow to most refrigerator and icemaker lines, helping maintain fresh-tasting chilled water and ice. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B8LJ3FPG | | Best Sellers Rank | #67,591 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #121 in Under-Sink & Countertop Filtration | | Brand Name | PureDrop | | Capacity | 50 gallons | | Container Type | Bottle | | Customer Reviews | 4.4 4.4 out of 5 stars (652) | | Included Components | Water filtration system, faucet, installation manual, tank, parts | | Installation Type | User-Installed | | Item Dimensions L x W x H | 16"L x 22"W x 17"H | | Item Type Name | RO Water filter system | | Item Weight | 22 Pounds | | LowerTemperature Range | 40 Degrees Fahrenheit | | Manufacturer | PureDrop | | Material Type | Alkaline RO Water Filtration | | Maximum Flow Rate | 100 Liters Per Day | | Model Name | RTW5AK | | Model Number | RTW5AK | | Operating Pressure Range | 40-80 PSI | | Other Special Features of the Product | Reduce TDS, reverse osmosis water filter system | | Part Number | RTW5AK | | Power Source | Battery Powered | | Purification Method | Reverse Osmosis | | Smart Home Compatibility | Not Smart Home Compatible | | UPC | 810004173019 | | Unit Count | 4159.84 Ounce | | Warranty Description | 1-year manufacturer | ## Product Details - **Brand:** PureDrop - **Capacity:** 50 gallons - **Included Components:** Water filtration system, faucet, installation manual, tank, parts - **Installation Type:** User-Installed - **Material:** Alkaline RO Water Filtration - **Package Information:** Bottle - **Power Source:** Battery Powered - **Product Dimensions:** 16"L x 22"W x 17"H - **Purification Method:** Reverse Osmosis - **Special Feature:** Reduce TDS, reverse osmosis water filter system ## Images ![PureDrop RTW5AK Reverse Osmosis Water Filter System with Alkaline Remineralization Filter, 6-Stage Under Sink RO System with Patented Top-Mount Faucet and 3 Extra Pre-Filters - Image 1](https://m.media-amazon.com/images/I/71kTtMMZv6L.jpg) ![PureDrop RTW5AK Reverse Osmosis Water Filter System with Alkaline Remineralization Filter, 6-Stage Under Sink RO System with Patented Top-Mount Faucet and 3 Extra Pre-Filters - Image 2](https://m.media-amazon.com/images/I/71zrUoisn7L.jpg) ![PureDrop RTW5AK Reverse Osmosis Water Filter System with Alkaline Remineralization Filter, 6-Stage Under Sink RO System with Patented Top-Mount Faucet and 3 Extra Pre-Filters - Image 3](https://m.media-amazon.com/images/I/81sRgTTQIjL.jpg) ![PureDrop RTW5AK Reverse Osmosis Water Filter System with Alkaline Remineralization Filter, 6-Stage Under Sink RO System with Patented Top-Mount Faucet and 3 Extra Pre-Filters - Image 4](https://m.media-amazon.com/images/I/71Lv7cpzIhL.jpg) ![PureDrop RTW5AK Reverse Osmosis Water Filter System with Alkaline Remineralization Filter, 6-Stage Under Sink RO System with Patented Top-Mount Faucet and 3 Extra Pre-Filters - Image 5](https://m.media-amazon.com/images/I/71WwrmoQTVL.jpg) ## Available Options This product comes in different **Style** options. ## Frequently Bought Together - PureDrop RTW5AK Reverse Osmosis Alkaline Water Filter System, pH+ Alkaline Remineralization Under Sink RO Water Filter System, 6 Stage Reverse Osmosis Water Filtration Plus Extra 3 Filters, 50 GPD - iSpring ICEK Ultra Safe Fridge Water Line Connection and Ice Maker Installation Kit for Reverse Osmosis RO Systems & Water Filters, 1/4", 20 feet --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/465852711-puredrop-rtw5ak-reverse-osmosis-water-filter-system-with-alkaline-remineralization](https://www.desertcart.jp/products/465852711-puredrop-rtw5ak-reverse-osmosis-water-filter-system-with-alkaline-remineralization) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-17*