HOW CARBON FILTERS WORK

Better-tasting water, wherever you refill.

Activated carbon adds a final filtration step between the tap and your straw. As you drink, it reduces chlorine and selected trace compounds that can affect taste and odour.

ChlorinePFASSelected trace compounds

Meet drinktwo Hydrate

WHAT CAN REMAIN IN TAP WATER

Why tap water can taste different.

Drinking water is treated to make it safe, but treatment does not mean it contains nothing else. Chlorine is deliberately added during disinfection, and a residual may remain as water moves through the supply network. Trace compounds can also enter before treatment or later through infrastructure and plumbing.

Point-of-use filtration adds a final step immediately before you drink.

WHERE IT FITS INTO YOUR DAY

Built for the taps you already use.

Potable means suitable for drinking. drinktwo is designed for potable taps and refill stations at home, work, uni or the gym.

Fill the bottle as usual. Water passes through the carbon filter on its way to the straw, so filtration happens while you drink.

Home or work taps
Public bottle-refill stations
Gyms and sporting facilities
Schools and university campuses

One clear boundary: drinktwo is a point-of-use filter for potable water. It does not make untreated water safe to drink.

HOW CARBON FILTERING WORKS

The filtering happens inside the cartridge.

Activated carbon is processed to create a dense network of microscopic pores. This gives the small cartridge a large internal surface area for water to move across.

As water passes through, certain dissolved compounds are attracted to the carbon and held on its surface. This process is called adsorption. Carbon also reacts with chlorine at its surface, reducing the amount that reaches the straw.

1Water entersthe carbon cartridge

2Compounds meetthe porous carbon surface

3Water leavesthrough the straw

WHY CHLORINE TASTES DIFFERENT

Chlorine protects the supply. Carbon reduces what reaches your drink.

Chlorine has already done an important job by the time it reaches your bottle: disinfecting the water supply. Activated carbon is widely used to reduce free chlorine, including the chemical taste and smell it can leave behind. With drinktwo, that filtration step happens just before the water reaches the straw.

HOW IT GETS THERE

How compounds enter drinking water.

Compounds can reach drinking water at different points. Some are added during treatment. Others begin in the wider environment or enter later through plumbing. Water suppliers manage and monitor these pathways. Point-of-use filtration sits at the very end.

Disinfectants are added during treatment

Chlorine is used to control microorganisms and maintain a disinfectant residual while water moves through the supply network. That residual is why chlorine can still be present when water reaches the tap.

Trace compounds can begin in the environment

Water sources interact with the wider environment before treatment. Manufactured chemicals such as PFAS, agricultural chemicals and trace residues from everyday activity can enter the water cycle and become part of what water suppliers monitor and manage.

Plumbing is the final step before the tap

Treated water still travels through mains and your building's pipes before it reaches the tap. Some substances, including certain metals, can enter water from plumbing materials after treatment.

What activated carbon can target.

Adsorption holds dissolved compounds on carbon's porous surface as water passes through. Results depend on the compound, cartridge design, water conditions and contact time. Activated carbon is commonly used in drinking-water treatment to reduce chlorine. It can also improve taste and odour while targeting selected organic contaminants.

Chlorine

Activated carbon is widely used to reduce free chlorine in drinking water. Reducing chlorine can also lessen the chemical taste and smell it leaves behind, giving water a cleaner, fresher taste.

PFAS

Activated carbon is used in water treatment to reduce some PFAS compounds. It generally works better on longer-chain PFAS such as PFOA and PFOS. Shorter-chain PFAS can be harder to capture.

VOCs

Volatile organic compounds, or VOCs, are carbon-based chemicals. They can enter water through industrial activity. Household products and the surrounding environment are other possible sources. Activated carbon can adsorb many VOCs as water moves across its internal surface.

Herbicides and pesticides

Agricultural chemicals can reach water through runoff from farms and gardens or nearby land. Activated carbon is widely used to adsorb many organic pesticide and herbicide compounds.

Pharmaceutical residues

Medicines do not always disappear after they are used. Trace pharmaceutical compounds can pass into waterways through wastewater. Activated carbon is widely used to capture many of these organic compounds.

Emerging compounds

“Emerging compounds” are trace chemicals that researchers are beginning to detect and study in water. The group includes residues from medicine and personal-care products, along with some industrial chemicals. Activated carbon is used to reduce a range of these organic substances.

WHY IT’S USEFUL

What changes when you add a filter.

Reduces tested substances

The filter adds a final step before you drink, reducing the specific substances it has been tested to target.

Improves taste and smell

Activated carbon reduces chlorine and related odours, helping each refill taste and smell cleaner.

Works while you drink

There is no separate jug or waiting step. Fill from a potable source and filtration happens as you drink.

THE CLEAR LIMIT

What the filter does not do.

No single water filter removes everything. drinktwo is made only for potable drinking water. It reduces the substances the cartridge has been tested to target; it does not make untreated water safe or “purify” everything in it. Replace the cartridge at its rated capacity and use it with potable water.

READY TO TRY IT?

Make your next refill taste better.