Stage 2 UF membrane cartridge (listed 0.03 μm)
Under sink Ionizer
Hydrogen water filters in use—filtered water poured into a glass at a kitchen sink

Hydrogen Water Filter System for Home

1The Water Easy-F UF Filter System

Clean, Mineral-Rich Hydrogen Water Without Electricity.

Upgrade your everyday drinking water with a compact under-sink system designed to deliver clean, great-tasting water— with the option of hydrogen-rich hydration.

No electricity, no wastewater, and no complexity.

Sediment 1
Mineral 2
Post Carbon 3
Alkaline Hydrogen Water Filter or Home 4
Alkaline Hydrogen Water Filter for Home 1

Why We Developed the 1The Water System

We set out to design a water filter that’s affordable, fits in small spaces, and is simple to install. It also provides high-quality filtration, so everyone can enjoy fresh, hydrogen-rich water at home.
 
This model is made exclusively in South Korea with materials that meet high quality standards.
 
The Water Filter System, also called 1thewater or Easy-F, is a three-stage under-sink filter. For the second stage, you can pick either UF (Ultrafiltration) or Mineral options, which make two models: Extra CLEAN and Mineral PRO.
 
By choosing the second filter, you decide if you want hydrogen-enhanced water or purified water that removes viruses. This lets you control your water quality.
Filter Changes

Extra Clean Model
Filtration First

Designed for ultra-clean, crisp drinking water using advanced ultrafiltration technology.

  • 0.03 micron UF membrane removes bacteria, microplastics, and particles
  • Retains essential minerals like calcium and magnesium
  • No electricity required
  • No wastewater compared to reverse osmosis systems

 

Best for households prioritizing purity and clean taste.

Mineral Pro Model
Hydrogen Water

Adds hydrogen and essential minerals after filtration, delivering a functional hydration experience.

  • Infuses molecular hydrogen (H₂) into filtered water
  • Adds calcium and magnesium for balanced mineral content
  • Mild alkaline water profile
  • Fresh, smooth taste

 

Commonly explored for hydration, recovery, and antioxidant support.

Asian woman in a pink overshirt drinks water in a kitchen setting promoting healthy lifestyle.
pexels-photo-10806066-10806066-scaled

Potential Benefits of Hydrogen Water

Hydrogen water has been the subject of increasing scientific research, particularly in areas related to oxidative stress and recovery.

Hydrogen water may help protect your cells by reducing harmful free radicals in the body, which can support overall health and slow down some types of damage caused by stress and aging.

Drinking hydrogen water after exercise may help your muscles recover faster, reduce soreness, and feel less tired, so you can get back to activity more comfortably.

Hydrogen water hydrates you just like regular water, but it also contains dissolved hydrogen, which may help with antioxidant and anti-inflammatory effects during the day.
Hydrogen water preserves the natural minerals in your water, making it taste smoother and fresher. It still tastes clean and pleasant, making it more enjoyable to drink every day.

Some studies suggest molecular hydrogen may act as a selective antioxidant, targeting harmful free radicals while preserving beneficial ones.

Learn more from research: NCBI Hydrogen Water Research

How does it work?

Stage 3 post-carbon cartridge for taste polishing

1) Sediment Filter

Designed to reduce visible particulates such as sand, silt, and rust, and help protect downstream filters.

Stage 2 UF membrane cartridge (listed 0.03 μm)

2) UF Membrane (Extra Clean Model)

Ultrafiltration membrane listed at 0.03μm , positioned for a crisp, filtration-first finish without electricity.

Hydrogen Filters

2) Mineral Filter(Mineral Pro Model)

Infuses molecular hydrogen (H2) gas after purification, adds minerals like calcium/magnesium, and raises pH for alkaline water. Performance: Provides antioxidant benefits by neutralizing free radicals; enhances taste and potential wellness support without removing contaminants.

Stage 3 post-carbon cartridge for taste polishing

3) Post Carbon Filter

Final taste polish designed to reduce residual chlorine taste/odour and improve overall flavour.

Hydrogen Water Filter vs Other Water Systems

Feature Hydrogen Filter Reverse Osmosis Bottled Water
Minerals Retained Removed Varies
Hydrogen Yes No No
Water Waste None High N/A
Convenience High Medium Low

A smarter way to hydrate—hydrogen water filtration delivers clean, mineral-rich water with no waste, no plastic, and added functional benefits beyond traditional systems.

Designed for Everyday Life

Clean, Compact, and Conscious Water Solution

Experience pure, mineral-rich water with an eco-friendly, easy-to-install, and award-winning compact filter system.

Enjoy every sip with confidence — this smart and simple filtration system removes 99.9% of contaminants, leaving your water pure, fresh, and free from chemicals, odors, and micro‑plastics.

Enjoy naturally balanced water that retains essential minerals like Calcium, Potassium, Sodium, and Magnesium — and is rich in hydrogen for powerful antioxidant benefits and a cleaner, better taste.

Change filters in seconds — no tools, no worries, just fresh water made simple.

Set up in minutes — no plumber, no tools, no hassle. 1THE Water systems connect easily to your water supply and work without electricity, so you can start enjoying fresh, clean water right away.

Tankless means fresher, cleaner water — every time. Our system filters water instantly as you dispense, preventing bacterial growth and water waste found in traditional tank systems.

A smart way to save money — switch to 1THE Water and save up to €600 (≈ US $650) a year compared to bottled water. Enjoy fresh, clean water every day without the high cost or plastic waste.

Say goodbye to plastic bottles — enjoy endless clean, great‑tasting water at home without the hassle of carrying, buying, or recycling bottles ever again.

Choose 1THE Water for a perfect space‑saving solution. Designed with compact dimensions, it fits effortlessly into any kitchen — even under the sink — keeping your space clean and uncluttered. No matter the size of your kitchen, 1THE Water delivers top‑quality filtration without taking up your countertop.

Together, we can make a real difference. Every year, over 380 million tons of plastic are produced — and nearly half of it is used just once before polluting our planet for centuries. By choosing 1THE Water, you say no to single‑use plastic bottles and help protect our Earth and oceans for future generations.
(Source: PlasticOceans.org)

Simple Setup

Effortless Filter Changes.

A quick, repeatable routine—no countertop machine and no power required. Replace the filter every 6-12 months depending on usage.

Close the under-sink water supply valve before replacing cartridges

Close the water supply valve located under the sink.

Open the faucet to release pressure before filter replacement

Release the pressure by opening the faucet.

Twist the cartridge left 90 degrees to remove

Lift old filter and twist left 90° to remove.

Insert the new cartridge and twist right 90 degrees until secure

Insert new filter and twist right 90° until secure.

Certifications &
documentation

Independently tested and certified to internationally recognized standards, these credentials verify safety, material integrity, and consistent filtration performance—ensuring reliable water quality you can trust every day.

01

NSF

Independent testing and certification for water filter safety and performance standards.

03

IAPMO

Codes-based certification body that tests plumbing and water products for compliance.

02

WQA

Industry association that verifies water treatment products and supports quality assurance.

04

ISO

International standards framework confirming consistent quality management and manufacturing processes.

Common questions

Do I need electricity?

No. Both models are presented as an under-sink cartridge system that works without power.

How often do I replace filters?

The page shows a typical rhythm of 6 months (pre-carbon), 6~12 months (UF), and 6 months (post-carbon). Source water and usage can change the timing.

Can I pick UF or Mineral for stage 2?

Yes, you can select either a UF or a Mineral filter as the second stage, depending on your water quality needs and personal preference.

Is this medical or therapeutic?

No. This is for taste and hydration routines. It is not intended to diagnose, treat, cure, or prevent disease.

Which model should I choose?

Extra Clean is filtration-first with a listed 0.03μm UF membrane stage. Mineral Pro is positioned for a mineral finish and hydrogen-focused experience.

Do I need professional help to Install?

No, the system is designed for easy installation. Most users can install it themselves. A beautiful faucet for filtered water is included.

Complete hydrogen water lineup

Discover BioNatural's complete hydrogen water lineup—Korean-engineered for purity and power.