--- product_id: 601083825 title: "Waterdrop C1S Countertop Reverse Osmosis System, NSF/ANSI 372 Certified, 6-Stage, Portable Reverse Osmosis Water Filter, Reduce PFAS, No Installation Required, BPA Free" brand: "waterdrop" price: "¥87862" currency: JPY in_stock: true category: "Waterdrop" url: https://www.desertcart.jp/products/601083825-waterdrop-c1s-countertop-reverse-osmosis-system-nsf-ansi-372-certified store_origin: JP region: Japan --- # Smart touchscreen with real-time TDS & filter life 6-stage RO filtration for ultra-pure water Portable design with detachable 34oz water tank Waterdrop C1S Countertop Reverse Osmosis System, NSF/ANSI 372 Certified, 6-Stage, Portable Reverse Osmosis Water Filter, Reduce PFAS, No Installation Required, BPA Free **Brand:** waterdrop **Price:** ¥87862 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your hydration game with pure, smart, and portable water! ## Quick Answers - **What is this?** Waterdrop C1S Countertop Reverse Osmosis System, NSF/ANSI 372 Certified, 6-Stage, Portable Reverse Osmosis Water Filter, Reduce PFAS, No Installation Required, BPA Free by waterdrop - **How much does it cost?** ¥87862 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/601083825-waterdrop-c1s-countertop-reverse-osmosis-system-nsf-ansi-372-certified) ## Best For - waterdrop enthusiasts ## Why This Product - Trusted waterdrop brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **On-the-Go Freshness:** Detachable portable tank fits fridge perfectly for chilled hydration. - • **Next-Level Filtration:** Premium 0.0001μm membrane slashes PFAS, lead, chlorine & more. - • **Eco-Friendly Efficiency:** 3:1 water efficiency ratio conserves water without compromise. - • **Pure Water, Zero Hassle:** Plug & play countertop design—no installation, no stress. - • **Smart Hydration Control:** Customize your water volume with intuitive touchscreen ease. ## Overview The Waterdrop C1S is a compact, NSF/ANSI certified 6-stage reverse osmosis system designed for countertop use. It features a premium 0.0001μm RO membrane that effectively reduces PFAS, lead, chlorine, and other contaminants, delivering crisp, clean water. With a smart touchscreen for real-time TDS monitoring and filter life alerts, plus a detachable 34oz portable water tank, it offers customizable, eco-efficient hydration without installation hassle—perfect for modern professionals seeking health-conscious convenience. ## Description desertcart.com: Waterdrop C1S Countertop Reverse Osmosis System, NSF/ANSI 372 Certified, 6-Stage, Portable Reverse Osmosis Water Filter, Reduce PFAS, No Installation Required, BPA Free : Sports & Outdoors ## Features - [6-stage RO Filtration] Certified for safety with NSF/ANSI 372 lead-free material standard and SGS-tested. This CoreRO system uses premium 0.0001μm RO membrane to reduce TDS, PFOA, PFOS, Chlorine, Fluoride, Arsenic, Lead and more, providing you healthy water.NOTE: The WD-C1S can only enhance room-temperature water. - [Easy to Operate] This countertop reverse osmosis system has a smart touch screen for TDS real-time displaying and filter life monitoring. Enjoy the convenience of 5 adjustable water volumes and effortlessly customize your water volume with simple controls. NOTE: Before use, please make sure that the black protective film on the screen is removed to avoid affecting normal operation. - [Fits Every Countertop] Ideal for kitchen, office, or bedroom - its compact design fits every countertop. No installation hassle, just plug and play for immediate clean water access, simplifying your path to a healthier lifestyle. - [High-efficiency & Long-lasting] 3:1 water efficiency ratio designed to conserve water while being sustainable. Enjoy a composite filter with a 12-month lifespan, effortlessly replaceable within seconds for pure water anytime. NOTE: Do not work with well water or source water with high TDS (>500). - [Portable Pure Water Tank] Experience pure hydration with detachable design. Ideal for daily use, its 34oz capacity beautifully meets your water intake needs. Conveniently fits into refrigerator, it adapts to your diverse drinking preferences with ease. Kindly note that the package includes just one portable pure water tank. - [Flushing Process] After powering on, the system auto-rinses the filter. When the water tank indicator lights up and the screen shows 50%, empty the tank and refill it. Continue rinsing until the screen shows 100%, indicating the process is complete. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CM9HRBG8 | | Best Sellers Rank | #86,129 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #142 in Under-Sink & Countertop Filtration | | Brand Name | Waterdrop | | Capacity | 1.1 Gallons | | Container Type | Dispenser | | Customer Reviews | 4.0 4.0 out of 5 stars (413) | | Filter Life Cycle | 12 Months | | Included Components | C1S RO System, Replacement Filters, User Manual | | Installation Type | Countertop | | Item Dimensions L x W x H | 8.3"L x 11.7"W x 13.7"H | | Item Weight | 14 Pounds | | LowerTemperature Range | 41 Degrees Fahrenheit | | Manufacturer | Waterdrop | | Material Type | Reverse Osmosis Membrane & Carbon Block & PP Cotton | | Model Name | C1S | | Model Number | WD-C1S | | Operating Pressure Range | 100-240 Volts | | Other Special Features of the Product | 6 Stage RO Filtration, Portable Pure Water Tank, 3:1 Pure to Drain, NSF/ANSI 372 Certified | | Part Number | WD-C1 | | Power Source | Corded Electric | | Purification Method | Reverse Osmosis | | Smart Home Compatibility | Not Smart Home Compatible | | Supported Water TDS Level Maximum (PPM) | 500 | | UPC | 840814171875 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 100 Degrees Fahrenheit | ## Product Details - **Brand:** Waterdrop - **Capacity:** 1.1 Gallons - **Included Components:** C1S RO System, Replacement Filters, User Manual - **Installation Type:** Countertop - **Material:** Reverse Osmosis Membrane & Carbon Block & PP Cotton - **Package Information:** Dispenser - **Power Source:** Corded Electric - **Product Dimensions:** 8.3"L x 11.7"W x 13.7"H - **Purification Method:** Reverse Osmosis - **Special Feature:** 6 Stage RO Filtration, Portable Pure Water Tank, 3:1 Pure to Drain, NSF/ANSI 372 Certified ## Images ![Waterdrop C1S Countertop Reverse Osmosis System, NSF/ANSI 372 Certified, 6-Stage, Portable Reverse Osmosis Water Filter, Reduce PFAS, No Installation Required, BPA Free - Image 1](https://m.media-amazon.com/images/I/6135X0bcVNL.jpg) ![Waterdrop C1S Countertop Reverse Osmosis System, NSF/ANSI 372 Certified, 6-Stage, Portable Reverse Osmosis Water Filter, Reduce PFAS, No Installation Required, BPA Free - Image 2](https://m.media-amazon.com/images/I/71x-FF3wLCL.jpg) ![Waterdrop C1S Countertop Reverse Osmosis System, NSF/ANSI 372 Certified, 6-Stage, Portable Reverse Osmosis Water Filter, Reduce PFAS, No Installation Required, BPA Free - Image 3](https://m.media-amazon.com/images/I/81aDqACZdDL.jpg) ![Waterdrop C1S Countertop Reverse Osmosis System, NSF/ANSI 372 Certified, 6-Stage, Portable Reverse Osmosis Water Filter, Reduce PFAS, No Installation Required, BPA Free - Image 4](https://m.media-amazon.com/images/I/81NWsbcsoGL.jpg) ![Waterdrop C1S Countertop Reverse Osmosis System, NSF/ANSI 372 Certified, 6-Stage, Portable Reverse Osmosis Water Filter, Reduce PFAS, No Installation Required, BPA Free - Image 5](https://m.media-amazon.com/images/I/71+yrEBr2cL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Frequently Bought Together - [Instant Hot] Waterdrop CoreRO Reverse Osmosis System, NSF/ANSI 58 & 372 Certified, 6 Stage, Hot & Ambient Countertop RO Water Filter, No Installation Required, 3:1 Pure to Drain, WD-C1H - Maxblue MB-PWT Pure Water Tank, BPA Free, 34 OZ, Portable Pure Water Tank for WD-C1S and WD-C1H Countertop Reverse Osmosis System - Waterdrop WD-C1RF Filter with RO membrane, Replacement for WD-C1S and WD-C1H Countertop CoreRO System, 12-month Lifetime --- ## 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/601083825-waterdrop-c1s-countertop-reverse-osmosis-system-nsf-ansi-372-certified](https://www.desertcart.jp/products/601083825-waterdrop-c1s-countertop-reverse-osmosis-system-nsf-ansi-372-certified) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-06-16*