TheWell 2 reverse osmosis water purifier with mineralisation

Is reverse osmose the highest-performing technology for filtering drinking water ? What uses LANGWATER ?

Reverse osmosis is considered one of the most advanced and effective drinking water filtration methods available today.

If you want to understand all pros and cons of such method please read this blog "Learn more about pros and cons of reverse osmosis" 

TheWell 2 water filtration system combines reverse osmosis, active carbon, sediements and UV to removes 1000+ contaminants such as PFAS, microplastics, hormones, and metals all types of pollutants and odours from tap water, leaving you with water in its purest form. The 4-stage filtration system consists of:

"Discover our starterkit" (Button)

• A 1-Micron Sediment Filter filtering out larger particles to protect the reverse osmosis membrane and optimise its efficiency and lifespan
• An Activated Carbon Filter to remove chlorine and other particles that create bad taste or odor.
• A Reverse Osmosis (RO) membrane, which is the most efficient way to clean harmful paritcules from water, such as metals, microplastics, PFAS, hormones, pharmaceuticals and more. We use the latest NSF58 certified membran to ensure maximum efficiency for 2 years
• A UV filter prevents any post-filtration recontamination by bacteria from sources like the spout.

Safest tankless water purification technology
TheWell 2 reverse osmosis system filters water as it serves. Thanks to its fast, high-capacity system, LANGWATER drinks are prepared instantly, without the need for internal filtered water storage tanks.
Unlike other standalone filtration systems, TheWell 2 is tankless to prevent water stagnation, thereby reducing the risk of bacterial growth and post-filtration contamination.

Certified Safe & Compliant – LANGWATER ro water filter system countertop meets CE, ETL & EU Food Safety Standards
TheWell 2 meets European Conformity (CE) requirements. It follows EU (including UK) safety, health, and environmental protection regulations.
This machine also complies with EU regulation for ERP (Eco Design), RoHS, Reach and EU 10/2011 on Food Safety
It is certified by Intertek (ETL mark) for the U.S. market. This confirms it meets U.S. electrical/product safety standards.

What makes LANGWATER TheWell 2 one of the most hygienic and also safe countertop water filter on the market?

We went one step further than existing reverse osmosis systems : not only using antimicrobial materials, but also dry-testing all components.

• Antimicrobial materials – All plastic parts, internal and external, that come into contact with water are made with antimicrobial material to inhibit microbial growth.
• Dry testing – We are the only product that tests all components dry to avoid bacterial or chemical contamination from the water used during conventional testing. It made development harder. Systems must be sharper. Tolerances tighter. But we did no compromise and our relentless effort allowed us to challenge current filtration standards and reach another level of quality.
• Swiss precision control system – TheWell 2 features a sophisticated control system with load cells and smart sensors monitoring pumps, valves and boiler. This ensures optimal filtration, precise heating temperatures, and accurate mineral and flavour dosing.

Packed with patented technologies, TheWell 2 water purifier with mineralisation represents the pinnacle of safe, efficient and advanced drinking water filtration

Why are minerals essential in water and what is LANGWATER mineral composition ?

1) BALANCED WATER: Minerals make you water balanced

Truly pure RO water tastes flat, even acidic and is not good to drink in large quantities.

Indeed because advanced filtration removes everything, the water is stripped of minerals too.

That’s why it’s essential to add back healthy minerals to ensure premium drinking water.

Want to know more about TDS, read our blog "What is TDS, separating the good from the bad"

LANGWATER remineralisation also ensures:

• balanced, slightly alkaline water
• a pH of around 7.8
• an optimal TDS of approximately 250, thanks to these beneficial minerals.

2) TASTE: minerals are essential to make your purified water taste great
Minerals shape water taste, which is why our remineralization formula was created with our water sommelier. It adds back the right minerals to deliver great-tasting water.
And TheWell 2 even lets you adjust dosing thanks to our patented liquid delivery.

This way your water can taste like your favourite mineral water, without the plastic.

3) LANGWATER mineral composition

The mineral drops for osmosis water LANGWATER uses the LANGPAK patented liquid delivery system that ensures precise, constant and even adjustable mineral level.

Unlike other, we've perfected the mineral distribution to avoid having variable mineral level depending on time spent in filters etc.

Our proprietary technology also ensures a precise dose of minerals is infused into every serving, guaranteeing that the fresh taste of LANGWATER stays the same, from the first drop to the last - even after 200 litres.

You always get the same level of minerals, just like mineral water, the mineral composition is constant.

• The minerals liquid form mix instantly with the filtered water, no stirring or waiting for powder to dissolve
• The pharmaceutical micro-pump together with sensors enable precising dosing whatever the flow-rate

On standard settings, one set of minerals will enable you to produce 250 liters of water, containing (per liter):

Our LANGPAKs are produced in Switzerland using natural ingredients and contain no sodium, as most diets already have excessive levels of salt.

This patented mineralisation innovation is what makes TheWell 2 the best water purifier, beyond using most advanced filtration method

• 16.3 mg Calcium
• 142 mg Potassium
• 4mg Magnesium
• No Sodium

Learn more about Minerals

Hot water dispenser feature
Ambient or precisely and instantly heated to 70°, 75°, 80°, 85° or 90°C.
From everyday cooking to tea or coffee, select the exact temperature you need.
No kettle required.

Why are minerals essential in water and what is LANGWATER mineral composition ?

1) BALANCED WATER: Minerals make you water balanced

Truly pure RO water tastes flat, even acidic and is not good to drink in large quantities.

Indeed because advanced filtration removes everything, the water is stripped of minerals too.

That’s why it’s essential to add back healthy minerals to ensure premium drinking water.

Want to know more about TDS, read our blog "What is TDS, separating the good from the bad"

LANGWATER remineralisation also ensures:

• balanced, slightly alkaline water
• a pH of around 7.8
• an optimal TDS of approximately 250, thanks to these beneficial minerals.

2) TASTE: minerals are essential to make your purified water taste great
Minerals shape water taste, which is why our remineralization formula was created with our water sommelier. It adds back the right minerals to deliver great-tasting water.
And TheWell 2 even lets you adjust dosing thanks to our patented liquid delivery.

This way your water can taste like your favourite mineral water, without the plastic.

3) LANGWATER mineral composition

The mineral drops for osmosis water LANGWATER uses the LANGPAK patented liquid delivery system that ensures precise, constant and even adjustable mineral level.

Unlike other, we've perfected the mineral distribution to avoid having variable mineral level depending on time spent in filters etc.

Our proprietary technology also ensures a precise dose of minerals is infused into every serving, guaranteeing that the fresh taste of LANGWATER stays the same, from the first drop to the last - even after 200 litres.

You always get the same level of minerals, just like mineral water, the mineral composition is constant.

• The minerals liquid form mix instantly with the filtered water, no stirring or waiting for powder to dissolve
• The pharmaceutical micro-pump together with sensors enable precising dosing whatever the flow-rate

On standard settings, one set of minerals will enable you to produce 250 liters of water, containing (per liter):

Our LANGPAKs are produced in Switzerland using natural ingredients and contain no sodium, as most diets already have excessive levels of salt.

This patented mineralisation innovation is what makes TheWell 2 the best water purifier, beyond using most advanced filtration method

• 16.3 mg Calcium
• 142 mg Potassium
• 4mg Magnesium
• No Sodium

Learn more about Minerals

TheWell 2 is easy to set up. No installation. No plumbing. Simply plug in and drink.

On first use, the system runs a 25-minute filter rinse. After that, enjoy pure mineralised water on demand for years.
Use the app or touchscreen to select serving size, adjust mineral levels and flavour intensity, or customise the display.
See our support video for full setup guidance and advanced app features.

Low-Maintenance Countertop Water Purification System for the kitchen
TheWell 2 features an automatic hot rinsing program for optimal hygiene.
By default, it runs daily and takes just 1–2 minutes. You can adjust the frequency in the settings — every two days or switch it off if needed.
For maximum safety, we recommend keeping the hot cleaning activated.

High-speed reverse osmosis water filtration and instant delivery
The countertop waterfilter with mineralisation instantly serves hot or ambient mineralized water, or one of the LANGWATER+ flavored drinks.
TheWell was already one of the fastest stations on the market, but we've doubled the flow rate while ensuring top-notch RO membrane filtration, and instantly & precisely adding minerals. TheWell 2 now produces 1 liter in 2.5 minutes.

Long-Life sediment, active carbon and reverse osmosis filters. Low Operating Cost. Easy switch
LANGWATER uses high-performance, long-life filters to minimise maintenance and reduce operating costs.
TheWell 2 filtration system features:
NSF 58 certified reverse osmosis membrane – lasts up to 2 years (or 3000 L)*
Combined sediment and carbon filter – lasts up to 1 year (or 1500 L)*
Includes a scaling inhibitor to reduce limescale buildup, protect the RO membrane and extend system lifespan.
Filter replacement takes just 3 seconds.
*Actual lifespan depends on water TDS and usage conditions.

Why is LANGWATER the most cost-effective and sustainable alternative to bottled water?
Many households buy hundreds — even thousands — of bottled waters per year, spending on average €800 annually.
With LANGWATER, you invest once and enjoy premium, purified and mineralised water at home for years.

• Long-lasting filters reduce operating costs
• One set of mineral packs produces up to 250 litres of balanced water
• Low energy consumption. Minimal waste.
• Thousands of plastic bottles saved

No more carrying. No more storing. No more plastic waste.

Produce high-quality drinking water at home — anytime you need it.

Better for you. Smarter for the planet.

What is TheWell 2 water waste and energy consumption?
TheWell 2 is engineered to minimise reverse osmosis water waste.
Thanks to an advanced recirculation system, filtered reject water is redirected back into the tap water tank instead of being discharged. This allows the system to reach up to 75% efficiency (3:1 ratio) — significantly reducing typical RO wastewater while preserving filter life and performance.
For this reason, the tap water tank must be emptied each time you refill it. The recirculated water becomes more concentrated and needs to be refreshed to maintain optimal filtration quality.
Energy consumption: just 4 Wh per litre.
Highly efficient. Low impact. High performance.