Do you need a water filter? Here's how to tell for sure

Published on July 14, 2026 | Reading time: ~9 minutes

Do you need a water filter, or is it a waste of money? This is one of the most frequently asked questions about tap water in the Netherlands. Advertisements promise pure health, while water companies say filtering is unnecessary. The truth is more nuanced: for most people, Dutch tap water is safe to drink, but there are concrete situations where a filter definitely offers added value.

In this guide, we explain what a water filter does, how good our tap water really is, and when filtering makes sense or not. This way, you can make an informed choice yourself, without fear-mongering.

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1. What is a water filter and what does it do?

There are significant differences between filter types. A simple filter jug uses activated carbon to improve taste and remove some chlorine. A reverse osmosis (RO) system removes almost everything from the water, including minerals. An under-sink inline filter, like the PureFilter Mineral+, combines thorough purification with the retention and even addition of minerals via Swedish Mineral Rock technology.

The core question is therefore not just whether you filter, but also with what and for what purpose. That determines whether a filter benefits you.

2. How good is Dutch tap water?

Dutch tap water is among the best in the world. According to industry association Vewin, the water is monitored for more than 60 legal parameters and almost always complies with the strict standards of the Drinking Water Decree. Water companies purify groundwater and surface water through multiple steps: sand filtration, activated carbon, aeration, and sometimes UV.

Unlike in many countries, no chlorine or fluoride is added to Dutch drinking water. This is an important difference from, for example, the United States or Southern Europe, where filtering is more often necessary purely for basic quality.

However, safe does not mean completely free of all substances. The RIVM and Vewin report that tap water may contain traces of PFAS, medicine residues, pesticides, and microplastics in low concentrations. In addition, lead can be released from lead pipes in houses built before 1960. The quantities are usually well below the norm, but not always zero.

3. Do you need a water filter in the Netherlands?

For pure safety, the answer for most households is: no, you don't strictly need a water filter. The tap water is drinkable and healthy as it comes from the tap. Those who buy a filter purely out of fear of the water are often guided by fear-mongering.

But that's not the whole story. More and more people are consciously choosing to filter for reasons other than pure safety: certainty about PFAS and micropollutants, a better taste without chlorine, less limescale in the kettle, or the convenience of fresh water from the tap instead of lugging bottles. At PureFilter, we see that customers mainly choose that combination of certainty, taste, and convenience, not out of panic.

In short: do you need a water filter? Not necessary in the strict sense, but it can certainly be useful, depending on your situation and wishes.

4. When do you need a water filter?

There are concrete situations where a water filter really offers added value. If you recognize yourself in one of these points, then filtering is a wise choice.

You live in an old house with lead pipes

In houses built before 1960, lead pipes may still be present. Lead is undesirable at any concentration, especially for children and pregnant women. A certified filter at the tap effectively removes lead. Read more about our approach to PFAS and heavy metals here.

You want certainty about PFAS and medicine residues

These micropollutants are present in low concentrations in many sources. If you want that extra certainty, a filter with activated carbon and fine membranes is the logical step.

You live in an area with hard water

In large parts of the Netherlands, the water is hard, with a lot of lime. This has nothing to do with safety, but it does with taste and limescale in appliances. You can read more about this in our blog on hard water in the Netherlands.

You are bothered by the taste or smell

A slightly chlorine-like or metallic taste occurs regionally. A carbon filter neutralizes this, making water, tea, and coffee noticeably better tasting.

5. Benefits of a home water filter

Why do households choose a fixed under-sink filter? The main benefits at a glance:

• Purity at the source: a good inline filter removes more than 100 contaminants, from chlorine and heavy metals to PFAS and microplastics.
• Minerals are retained: unlike reverse osmosis, the PureFilter Mineral+ actually adds calcium, magnesium, and potassium, so your water doesn't taste flat.
• Better taste: without a chlorine or metallic taste, you drink water more often, and coffee and tea taste fuller.
• Convenience and less waste: fresh filtered water from the tap means no lugging bottles and much less plastic.
• Cost advantage in the long term: a filter capacity of 15,000 to 20,000 liters per cartridge is significantly cheaper than bottled water.

Are you undecided between types? Our page on the best water filter compares the options.

6. Points to consider when choosing

A water filter is only useful if you choose the right one and maintain it well. Pay attention to these points:

• Certification: choose a filter with recognized certifications such as NSF 42, 53, 61, and 372. Without certification, you don't know what is actually being removed.
• Mineral retention: an RO system also removes healthy minerals. If you want to retain them, choose a filter that remineralizes.
• Maintenance: every filter must be replaced on time. With a saturated filter, its effectiveness can decrease.
• Installation: an under-sink inline filter can be installed in 5 to 10 minutes, without a plumber. Check out our explanation of an under-sink water filter.
• Costs: expect a one-time purchase and periodic replacement filters from 49.90 euros.

7. Comparison table: which filter option suits you?

Not every filter does the same. This table compares the most chosen options so you can see which one suits your needs.

A filter jug is cheap and accessible, but it saturates quickly and does little against PFAS. Reverse osmosis purifies thoroughly but also removes minerals and requires maintenance. The PureFilter Mineral+ combines thorough purification with mineral retention. See also our comparisons tap water vs. bottled water and the page PureFilter vs Brita.

8. Buying Advice

If you purely want to reduce limescale in your kettle, a simple solution is often sufficient. However, if you are looking for thorough purification while retaining minerals, a certified inline filter is the best choice. The PureFilter Mineral+ costs 149.90 euros, can be installed in 5 to 10 minutes, and has a capacity of 15,000 to 20,000 liters per cartridge. For larger households, there are variants including 2 filters or including 3 filters. View the full range on our page home water filter and find the system that suits you.

9. Frequently Asked Questions (FAQ)

10. Conclusion

Do you need a water filter? For pure safety, usually not: Dutch tap water is excellent. But filtering is useful if you want certainty about PFAS or lead, suffer from limescale or chlorine taste, or simply want fresh, mineral-rich water from the tap without lugging bottles. The key is a conscious choice: choose a certified filter that suits your situation.

If you want thorough purification while retaining minerals, the PureFilter Mineral+ is a strong option. This way you drink safe and delicious water, every day.