U1: The 4-in-1 filtration system for pure water in 7 minutes

5-stage filter system | Zero-installation | Water temperature control (hot or cold water!) | 1-year warranty | Elegant, compact design

Categories: Food & Beverage, Home & Office

Funding Campaigns

video cover-1

This countertop water filtration system has a 5-stage filter system that removes up to 99% of all contaminants, including Fluoride, Chlorine, heavy metals like lead, and more.

almost 2 years ago

View On Kickstarter


Community Ratings


Mohammad Z.
Mohammad Z.
Aug 7, 2022

Maintenance and guarantee are highly questionable with such products.

John T.
John T.
Aug 4, 2022

there's a way to fix the refilling problem. add a float valve and connect a water source to it .  May have to drill a hole for the connectors. Or maybe creator would read this and come predrilled with a push in connector 

Rodney J.
Rodney J.
Aug 3, 2022

Love the design but I have the same concerns as BE A. and Stephane L.

My family drink at least 1 gallon per day so the constant refilling will be annoying and the concerns of properly cleaning the system and no standard filters being used presents a problem if the company fails. 

Jul 28, 2022

Being “like a Keurig” is not much of a selling point for me (have you seen all the reviews of bacteria in Keurigs?), especially as it seems the water is filtered then stored. I'm glad there's a UV light to keep the filtered water safe, but if there's no way to clean out the hose or channel the water is sent from the tank to the spout with, that means there's also no way to make sure there isn't a bacterial colony developing in that hose or channel.

Steph L.
Steph L.
Jul 28, 2022

I drink too much water for that half-gallon tank! It would be great if this machine could be connected directly to the water tap. And then there are the filters that we can only buy from them. If they stop producing them, we are stuck with a machine that is no longer useable.

Campaign Info


Want an advanced water filter system, but don’t want to deal with messy hoses, leaky diverter valves and clunky installation? Meet U1 by RKIN.

It’s a sleek, zero-installation water filter that uses reverse osmosis, UV, and hydrogen technologies to transform ordinary tap water into pure, healthy, and delicious drinking water.

It has an advanced filtration system that’s made up of five stages to give you the purest, most delicious drinking water imaginable, unlike other water filter systems on the market. Plus, you can choose your water’s temperature (hot or cold!), thanks to the temperature control system!

We want you to have the best quality water in your home…

That’s why U1 has an advanced filtration system with five stages. It removes up to 99% of all contaminants, including Fluoride, Chlorine, heavy metals like lead, and more.

Plus, U1 has an intelligent touch control panel, so you can easily see the status of your filter. It also has a UV Light that keeps water fresh when the system is not in use.


U1 doesn’t require installation, so you can easily place it on your countertop—perfect for people who live in apartments, condos and RVs.

Do you ever wish your water filter system had hot or cold water?

U1 has a customizable default water temperature setting so that your water is always set to the temperature of your liking. Plus, there’s an instant hot water option that’s perfect for baby formula, tea, instant coffee, and more!

The display will also show the Hydrogen content and water quality readings, so you’ll always know your system is working properly.

U1 includes a polishing Alkaline post-filter that returns beneficial minerals, calcium and magnesium to purified water for the best taste.

It also increases the alkalinity of the water to a perfectly balanced level of 7-8 pH, similar to spring water.

Plus, U1's hydrogen-infused water delivers a negative ORP of 340.

With a pre-order of U1, you get an unconditional 1-year money-back guarantee.

If you opt to add our 2-year filter bundle to your order, you'll receive two annual replacement filter kits and one reverse osmosis membrane. You'll get three years of use with this add-on!

U.S. backers will also be responsible for the optional turntable shipping cost (approximately $12) after the campaign ends. 

👋 Hi, Eric founder of RKIN, here!

Whether you own or rent, RKIN has a solution for you.

From whole-house filtration systems to portable water purifiers, we make a wide selection of high-quality water filters tailored to any household needs. We focus on delivering products that are well-built and user-friendly.

Our most recent creation, U1, was designed based on customer feedback. Now we’re turning to you, the Kickstarter community, to help bring this model to production!





We can’t thank you enough for checking out our project and helping us make U1 a reality.

We know not everyone will be able to support us with a pledge, so even if you can’t give a dollar or pre-order a U1, you can still help us spread the word on Twitter, Facebook, Reddit, Instagram and anywhere else you can think of!