Water filtration has become significantly more popular, especially in the years following the COVID-19 pandemic. But what exactly is filtered water? And when does it make sense to drink it? We discuss all this and more in this blog post.
What does filtered water mean?
Filtered water is tap water that has been purified of unwanted or potentially harmful substances using a filter system. The exact quality and filtered substances depend heavily on the water filter used. A high-quality water filter can remove the following substances, among others:
- Limescale, which affects the taste, causes household appliances to calcify and thus shortens their service life
- Chlorine, which is often used for disinfection and gives the water a chemical taste
- Medication residues and hormone-like substances that enter our tap water through sewage and can impair our resistance to medication
- Microplastics, which enter the water through the wear and tear of plastics
- Heavy metals such as lead or mercury, which can enter the water through old pipes and fittings
What is the difference between tap water, mineral water and filtered water?
| Advantages | Disadvantages | |
| Tap water |
|
Depending on the region, may contain traces of lime, chlorine, heavy metals or microplastics, which can contribute to illness in the long term |
| Mineral water |
|
Bad for the environment: usually bottled in plastic bottles and transported over long distances |
| Filtered water |
|
Filters need to be changed regularly |
Filtered water combines the convenience of tap water with the great taste of mineral water. In addition, filtered water is up to 99% free of harmful substances and can therefore be enjoyed without worry.
Is filtered water healthy?
Water filters are generally considered healthy because they remove harmful substances and thus reduce invisible stress on our bodies. Although a good water filter also removes potentially beneficial minerals such as magnesium and calcium, these are replenished through food as part of a healthy diet. In terms of a holistic healthy lifestyle, filtered water is therefore not only healthy, but also recommended.
Why should you drink filtered water?
Drinking filtered water has several short- and long-term benefits. Here are the most important ones:
Removes harmful substances
Unfiltered tap water can contain chlorine, lead, nitrates, pesticides and microplastics. While small amounts are harmless, consuming small amounts over a long period of time can damage your health or weaken your immune system. Reducing exposure is therefore particularly important for infants, children and people with weakened immune systems.
Supports good health
Good and regular hydration supports digestion, skin health and energy levels. Water that tastes or smells unpleasant can reduce intake – filtering tap water into palatable drinking water motivates us to drink more.
Better taste and smell
Tap water may meet local safety standards, but it can still taste or smell like chlorine. Humans can detect chlorine in very low concentrations, so even small amounts can affect the taste of water. A good carbon filter or reverse osmosis system reduces these residues and removes other compounds that affect taste. The result is water that tastes clean and smells neutral.
Cost savings
The cost of bottled water can quickly add up, especially for families or businesses. A single household can spend several hundred euros a year on bottled water for drinking and cooking. A one-time investment in a home water filtration system pays for itself over time. With most systems, the filters only need to be replaced occasionally, and the cost per litre of filtered water is significantly lower than that of bottled water. In the long run, filtered water is a far more economical choice.
Reduces plastic waste
Switching from bottled water to filtered tap water reduces single-use plastic and lowers environmental impact. The production of plastic bottles consumes an enormous amount of energy, and PET bottles leave behind polluted beaches, rivers and parks. In most cases, it is not profitable for companies to have bottles returned and refilled, which is why new plastic bottles are constantly being produced. With a water filter that makes your tap water taste as good as bottled water, you no longer contribute to this environmental pollution.
Read more about this in our blog on the hidden costs of plastic water bottles.
Convenience
Having filtered water at home makes life easier. You no longer have to boil water, carry heavy bottles home from the shop or worry about running out of water. Whether you need water for drinking, cooking or filling a travel bottle, it is always available from your tap or kitchen faucet. This daily convenience saves time and promotes healthier habits – especially in busy households and workplaces.

How can I obtain filtered water?
Obtaining filtered water is now easier than ever: with a home water treatment system, you can have fresh, clean water at your fingertips or straight from the tap at any time. There are various water treatment systems for filtered water at home:
- Filter jugs: Usually equipped with a simple activated carbon filter (read more about the different types of filters in our blog ‘How water filters work’) and perfect for single-person households due to their size. While filter jugs filter out odours and particles such as chlorine, they are not particularly effective against chemical contaminants.
- Countertop water filters: Countertop water filters are compact tabletop devices ideal for private households or offices. They do not require professional installation and deliver fresh, clean water at the touch of a button. AquaTru Classic, for example, combines these advantages and a multi-stage filter system in a modern design that fits into any kitchen. Models such as the AquaTru Carafe also come with a glass jug that can be stored in the refrigerator.
- Under-sink filters: Connected under the sink, under-sink filters such as the AquaTru Under Sink deliver filtered water directly from the tap – convenient, space-saving and ideal for families. While the system should be installed by a professional, it does not need to be refilled with water, unlike filter jugs and tabletop water filters. It also does not take up any space on the kitchen counter.
Not all filter systems deliver the same quality. Many simple filters remove limescale and improve taste, but allow complex pollutants such as microplastics, nitrates and drug residues to pass through. AquaTru therefore uses a patented reverse osmosis system that purifies the water in four stages and reliably filters up to 99% of all pollutants from tap water.
High-quality, pure drinking water for your home – every day
Whether for babies, pets, athletes, wellness enthusiasts or simply for everyday use, filtered water offers many advantages that tap water and mineral water cannot provide. Filtered water tastes better, is free of pollutants and supports a health-conscious, sustainable lifestyle. As an added bonus, you save money, plastic waste and effort.
Home water treatment systems such as those from AquaTru ensure that you can enjoy healthy, pure drinking water at all times – without plastic bottles, without lugging around heavy bottles, without compromises. Find out now which AquaTru water filter is right for you with our AquaTru quiz or get one directly from our product page.