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Hydration Hub – understanding water, every day

The average human body is around 60% water, yet most of us know little about what we drink each day.
Find answers on what's in your water, how filtration works and what it changes – clearly, and backed by evidence.

A smiling woman floating on her back in water, wearing a black bikini top and a light beige bikini bottom.

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Centre d'hydratation

Coffee pot descaling: how scale makes your coffee bitter
TASTE

Coffee pot descaling: how scale makes your coffee bitter

Mark Appel

Descaling a coffee pot takes half an hour: run a citric-acid-based descaler through the machine, then rinse with two cycles of fresh water. It is worth the effort – limescale is one of the most common reasons coffee turns bitter.

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How long does bottled water last — and why the bottle decides
In your water

How long does bottled water last — and why the bottle decides

Mark Appel

Unopened bottled water typically keeps until the best-before date on the label – usually one to two years. The limit comes from the plastic, not the water: water itself doesn't expire. That distinction is where this story actually starts.

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Benefits of filtered water: what filtering actually changes
Filtration

Benefits of filtered water: what filtering actually changes

Mark Appel

Filtered water is tap water, refined at home: a cartridge reduces chlorine, limescale and certain impurities. The result shows up in three places – the taste in your glass, the scale in your kettle, and the life of your appliances.

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How do Water Filters work? Inside the cartridge, explained
Filtration

How do Water Filters work? Inside the cartridge, explained

Mark Appel

A Water Filter cartridge works with two media in sequence: activated carbon adsorbs chlorine and taste-affecting substances, and ion-exchange resin takes out part of the calcium behind limescale. Here is how each works – and, just as honestly, what a Water Filter can't do.

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A cup of tea with two sides: one with a film on top and one without. Next to is lies a spoon and on the other side stands a bowl with cookies.
TASTE

How to get rid of tea stains in cups — and the scum on top

Mark Appel

Tea stains lift with a paste of bicarbonate of soda and warm water – no harsh chemicals needed. The film on top of your tea has a different cause, and both have more to do with your water than with your tea.

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Two people are swimming in a lake with a SUP. The woman shakes her had and waterdrops are flying through the air.
In your water

How to avoid PFAS: forever chemicals in water, explained

Mark Appel

You can reduce your PFAS exposure in three practical ways: know your local water quality, check everyday products, and treat your drinking water where it helps.

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A woman fills in a glass of water with a water jug in a kitchen. In the background stands a bowl with bright yellow lemons.
Filtration

How long do water filters last — and when to change yours

Mark Appel

Most jug water filter cartridges last about four weeks in everyday use. Here is why the working life is limited, how to change a cartridge properly, and what to do with the old one.

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A glass electric kettle, filled with cloudy tap water, shown on a table in a warm indoor setting. A white cup sits on a saucer to the right.
Limescale

Is limescale bad for you? What filtering really changes

Mark Appel

Short answer: no – limescale is a mineral deposit, not a health risk. Here is what it is, why some homes get so much of it, and what actually helps.

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Comment fonctionne la filtration de l'eau – en 90 secondes

Quatre-vingt-dix secondes pour découvrir ce qui se passe à l'intérieur d'une cartouche filtrante, entre le robinet et ton verre – le mécanisme qui explique en grande partie ce que tu vas lire dans cette rubrique.

Charger la vidéo : Video animation of a MAXTRA PRO Limescale Expert Water Filter cartridge, which shows the single filter stages inside the cartridge.

FAQ

Comprendre, c'est une chose, choisir, c'en est une autre.

Ces guides thématiques t'aident à mettre en pratique ce que tu as lu ici pour prendre une décision adaptée à ton eau et à ton foyer.

Guide sur les filtres à eau

Réponds à trois questions et découvre une recommandation de filtre à eau adaptée à ton foyer et à tes besoins.

Comparaison des carafes à filtre

Tailles, cartouches filtrantes et utilisation quotidienne : compare-les pour trouver ce qui convient le mieux à ton foyer.

Une carafe, un robinet ou une bouteille ?

Trois méthodes courantes pour filtrer l'eau à la maison : quand chacune d'entre elles est adaptée, et quand elle ne l'est pas.

Apprends à connaître ton eau, une fois par mois

Un e-mail par mois, une Newsletter : le meilleur du Blog BRITA – des infos sur l'eau pure, des conseils pratiques, des études d'impact et des idées pour le quotidien – plus une astuce que tu peux mettre en pratique tout de suite. Pas de flot d'e-mails, et tu peux te désabonner quand tu veux.

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