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Waterdrop C1S Countertop Reverse Osmosis System - CoreRO Series
Waterdrop C1S Countertop Reverse Osmosis System - CoreRO Series
Waterdrop C1S Countertop Reverse Osmosis System - CoreRO Series
Waterdrop C1S Countertop Reverse Osmosis System - CoreRO Series
Waterdrop C1S Countertop Reverse Osmosis System - CoreRO Series
Waterdrop C1S Countertop Reverse Osmosis System - CoreRO Series
Waterdrop C1S Countertop Reverse Osmosis System - CoreRO Series
Waterdrop C1S Countertop Reverse Osmosis System - CoreRO Series
Waterdrop C1S Countertop Reverse Osmosis System - CoreRO Series
Waterdrop C1S Countertop Reverse Osmosis System - CoreRO Series
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Replacement Filter

Replace filter for continued contaminants removal and system performance.

  • C1RF Replacement Filter

    C1RF Filter

    Provides up to 12 months or 1,100 gallons of clean water.

    $99.99

Waterdrop C1S Countertop Reverse Osmosis System - CoreRO Series

$424.15 $499.00 15% Off

Apply code in checkout to get 15% off

  • [6-Stage RO Filtration] – Reduces TDS, PFOA, chlorine, lead & more.
  • [5 Water Volumes] – Dispense 118 ml, 237 ml, or 591 ml.
  • [Smart Touch Control] – Custom modes with TDS alert.
  • [Compact Tank] – Detachable, fridge-friendly, no installation.
  • [Long-Lasting Use] – 3:1 pure-to-drain ratio, 12-month filter.

Fast, Free Shipping

30-Day Price Protection

30-Day Worry-Free Returns

1-Year Warranty

24/7 Customer Support

Services and Benefits

Enjoy swift doorstep delivery with every order at no extra cost. Our efficient logistics network ensures your purchases reach you quickly and reliably, so you can start using your new products without delay or hidden fees. Experience convenience that truly moves at your speed.

Enjoy worry-free shopping with our 30-day price protection. If the price drops within 30 days of your purchase, contact us and we’ll refund the difference according to our policy, helping you shop with greater confidence and value.

Shop with complete confidence knowing you have a full month to decide. If you're not satisfied for any reason, our straightforward return process makes it easy to send items back for a prompt refund or exchange—no complicated steps or hassles involved.

Your purchase is protected by an extensive one-year warranty covering manufacturing defects. This long-term commitment guarantees peace of mind and reflects our trust in the durability and quality of the products we offer to you.

Our dedicated support team is available around the clock, every day of the year. Whenever you need assistance, get immediate help via live chat, email, or phone for any questions, ensuring a smooth and supported experience whenever you reach out.

Payment Method

  • VISA
  • Mastercard
  • American Express（AMEX）
  • Discover
  • JCB
  • PayPal
  • Elo
  • Klarna

Replacement Filter

Replace filter for continued contaminants removal and system performance.

  • C1RF Replacement Filter

    C1RF Filter

    Provides up to 12 months or 1,100 gallons of clean water.

    $99.99

In Stock—Estimated delivery in 2-6 business days.
$424.15
$499.00 15% Off
Waterdrop C1S Countertop Reverse Osmosis System - CoreRO Series
Waterdrop C1S Countertop Reverse Osmosis System - CoreRO Series
  • Overview
  • Specs
  • Compare
  • Reviews
  • FAQs
  • Replacements
Selling Points Main Image Selling Points Main Image
NSF/ANSI 372 Certified

NSF/ANSI 372 Certified

99.94% lead reduction & 94.95% TDS reduction

5 Water Volume Options

5 Water Volume Options

6-Stage RO Filtration

6-Stage RO Filtration

0.0001μm RO filtration

Installation-Free, Plug & Play

Installation-Free, Plug & Play

Portable Pure Water Tank

Portable Pure Water Tank

Drinking Water Should Be Easy, Not a Trouble

Common water issues: slow fridge cooling, hot water needing tto cool, tricky under-sink filter installations, and costly bottled watter.

Healthy Before
Healthy After
Compact Before
Compact After
Portable Before
Portable After
Cost & Eco Before
Cost & Eco After
Instant Room-Temp Pure Water with 5 Volume Options Instant Room-Temp Pure Water with 5 Volume Options

Instant Room-Temp Pure Water with 5 Volume Options

Five water volumes to suit every need: from a 4oz espresso to an 8oz mug of coffee, or a full 20oz soup bowl, enjoy precise dispensing every time.

6-Stage Filtration 0.0001μm precision

6-Stage Filtration 0.0001μm precision

Reduces 99.94% of lead, TDS, PFOA, PFOS, fluoride, chlorine, copper, arsenic, and more impurities for cleaner, healthier water.* Tested by a third-party laboratory.

  • Smart Touch, Maximum Convenience

    Smart Touch, Maximum Convenience

    Save your preferred water volume with favorite mode. Stay informed with the filter life indicator and other user-friendly alerts for added convenience.

  • Portable Pure Water Tank

    Portable Pure Water Tank

    Stay refreshed with pure, chilled water. The detachable, compact pure water tank fits perfectly in your fridge, offering a 4-cup capacity for fresh, icy water whenever you want.

  • Quick 3s Filter Replacement

    Quick 3s Filter Replacement

    No tools required. Simply open the machine lid, twist, pull out the old filter, and insert the new one for a quick and easy replacement.

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Less Waste, More Pure Water

Sustainability

Less Waste, More Pure Water

Enjoy more pure water with less waste. Our 3:1 pure to drain ratio ensures efficient filtration, giving you cleaner water with minimal waste.

Installation

Installation-Free, Plug & Play

Enjoy a hassle-free setup with no installation required. Simply plug it in and start using it right away for ultimate convenience and ease of use.

REVIEW

Hear From Our Pros

Find out why professionals trust our filtration systems. Watch the video to see why it’s time for clean, refreshing water!
C1S
Specification
C1S
Model
C1S
Pure to Drain
3:1
Product Dimensions (cm)
29.7*21.1*34.8
Product Weight (kg)
6.35
Certification
NSF/ANSI 372
Filtration
6-stage Filtration
Capacity
75GPD
Usage
Indoor
Electricity Required
Yes

In The Box (4)

  • System x1

    System

  • C1RF Filter x1

    C1RF Filter

  • Water Tank x1

    Water Tank

  • Guide Book x1

    Guide Book

Compare  

CoreRO

Compare
CoreRO

Waterdrop C1S Countertop Reverse Osmosis System - CoreRO Series

C1S

$424.15
$499.00 15% off
Waterdrop C1H Instant Hot Water Reverse Osmosis System

C1H

$509.15
$599.00 15% off
Waterdrop A2 RO Hot and Cold Water Dispenser System

A2

$719.20
$899.00 20% off
Flow Rate
Flow Rate 75GPD 75GPD 100GPD
Alkaline Mineralization
Alkaline Mineralization × × ×
Pure to Drain
Pure to Drain 3:1 3:1 3:1
Filter Lifespan
Filter Lifespan

C1RF 12 Months

C1RF 12 Months

A2RF-RO 12 Months

Warranty
Warranty 1 Year 1 Year 1 Year
Certification
Certification NSF/ANSI 372 NSF/ANSI 58 & 372 Certified NSF/ANSI 372 Certified
Product Dimensions (cm)
Product Dimensions (cm) 29.7*21.1*34.8 29.7*21.1*34.8 40.4*20.8*39.9
Product Weight (kg)
Product Weight (kg) 6.35 6.35 10
Filtration
Filtration 6-stage Filtration 6-stage Filtration 5-stage Filtration
Electricity Required
Electricity Required Yes Yes Yes

Review

Hear From Our Users

Waterdrop users rave about the clean, crisp taste and health benefits of filtered water. Read their stories and see why they choose us.

Hear From Our Users
Review

FAQ

Curious about how the RO filter works? Our FAQ section covers everything from filter lifespan to installation tips for clean, pure water every day.

Contact Us

Does this countertop RO water system need to be drilled?

No ! You can use water filtration right away without needing to install it. Just plug it into a power outlet and it's ready to make clean water.

Is this water filter big? I have limited countertop space.

No, it's designed to be compact and small. It fits easily on your counter without taking up much room.

Does this purifier waste a lot of water?

No, it has a high 3:1 pure water ratio. It's efficient and wastes less water compared to other RO systems.

How often do I need to change the filters?

The filters last 12 months, so you won't need to change them often. This saves you money in the long run.

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