Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System
Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System

Waterdrop C1SL Alkaline Countertop Reverse Osmosis CoreRO Water Filter System

Waterdrop
Price
Save $-294.90
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  • In stock — ships FREE to the continental U.S.
  • Backordered, shipping soon
Shipping calculated at checkout.

💧 We Don’t Settle. That’s Why We Chose Waterdrop

Clean water is too important to compromise.

We joined the Waterdrop family because their products meet the highest standards — and yours.

Free Shipping to the 48 States

Shipping to Puerto Rico, Guam & Other U.S. Territories

Available for an additional fee — just ask us for a quote.

Every order is packaged with care, from start to finish.

SKU: WD-C1SL

KEY BENEFITS

  • 7-stage reverse osmosis filtration with UV sterilization reduces TDS, chlorine, lead, and more

  • Adds beneficial alkaline minerals to support better water flavor and balance

  • No installation required—compact and portable design fits any countertop

  • 170oz water tank and detachable pitcher offer all-day purified water

  • Smart display with TDS monitoring and filter life reminders

  • Efficient 3:1 pure water to drain ratio helps reduce plastic and water waste

The Waterdrop C1SL -Alkaline Tankless Undersink Reverse Osmosis System is a powerhouse when it comes to filtration. It uses an 7-stage precision RO system with a 0.0001-micron membrane to remove a wide range of contaminants. According to the manufacturer and third-party testing, it effectively reduces:

Total Dissolved Solids (TDS)
PFOA and PFOS (forever chemicals)
Chlorine
Fluoride
Arsenic
Lead
Chromium-VI
Barium
Salt
Sediment
Microplastics
Odors and unpleasant tastes

It’s also NSF/ANSI 58 and 372 certified, meaning it meets rigorous standards for contaminant reduction and lead-free materials. Plus, it includes alkaline remineralization, which adds beneficial minerals back into the water for a smoother taste and a pH around 7.5+

MAIN PURPOSE

The Waterdrop C1SL Alkaline Countertop Reverse Osmosis System is designed to transform tap water into clean, mineral-enriched drinking water. Ideal for use in kitchens, offices, bedrooms, or RVs, it delivers convenience, efficiency, and enhanced taste—all without installation.

PRODUCT OVERVIEW

This CoreRO countertop system delivers advanced water purification using a 7-stage filtration process certified by SGS.

It effectively reduces contaminants like TDS, chlorine, lead, PFOA, PFOS, salt, and sediment, while enriching water with essential minerals such as calcium, magnesium, sodium, and potassium.

With a compact design and a 170oz tank, it provides enough purified water for daily use. The smart touch control screen allows you to monitor TDS in real time, adjust volume settings, and track filter status.

Its detachable water pitcher is perfect for storing cold water in the fridge, making it as versatile as it is powerful.

This plug-and-play system is designed for ease of use and sustainability, offering a 3:1 pure water output ratio and a composite filter that lasts up to 12 months.

Whether you're brewing coffee, cooking meals, or staying hydrated, it brings purity and convenience to your countertop.

FEATURES

  1. 7-Stage CoreRO Filtration: Reduces harmful substances while improving taste and clarity
  2. Alkaline Mineral Enrichment: Adds Ca, Mg, Na, and K to enhance water balance and flavor
  3. Smart Touchscreen Panel: Displays real-time TDS and filter alerts for maintenance ease
  4. Detachable 170oz Water Pitcher: Ideal for daily use and refrigeration
  5. Compact and Portable: Installation-free for flexible placement across spaces
  6. Eco-Friendly Efficiency: Reduces reliance on bottled water with a 3:1 pure water ratio

WHAT’S INCLUDED

  1. Waterdrop C1SL Alkaline Countertop RO System
  2. Pre-installed 7-in-1 Composite RO Filter
  3. 170oz Detachable Water Pitcher
  4. Power Cord
  5. User Manual

BASIC INSTALLATION STEPS

  1. Place the unit on a flat surface near a power outlet

  2. Fill the water tank with potable water and insert the pitcher

  3. Plug in and power on the system

  4. Allow the auto-rinse to complete as instructed on the screen

  5. Dispense water using the touchscreen settings

PRO TIPS

Keep the pitcher in the fridge for cold alkaline water anytime. Replace the filter annually or as prompted on the display for optimal performance.
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