Frequently asked questions about water filters

Dutch tap water complies with legal standards, but that does not mean it is completely free of unwanted substances. Research shows that tap water can contain traces of PFAS, microplastics, medicine residues, and heavy metals — especially via outdated pipes. Read more about the quality of tap water in the Netherlands. A home water filter offers extra assurance in addition to the water purification provided by the drinking water company. The PureFilter Mineral+ filters more than 100 contaminants and adds calcium, magnesium, and potassium back through Swedish Mineral Rock™.

Safe and optimal are two different things. Tap water is legally allowed to contain small amounts of chlorine, lime, and other substances that affect taste and smell. Moreover, it lacks minerals such as calcium, magnesium, and potassium that natural spring water contains. An inline water filter like the PureFilter Mineral+ filters out unwanted substances AND adds beneficial minerals back in via Swedish Mineral Rock™ — for water that is not only safe but also fresher and richer in taste.

That's an understandable question. The government guarantees safe tap water — but "safe" means that substances are below legal limit values, not that they are completely absent. Independent research shows that Dutch tap water can contain measurable amounts of PFAS, microplastics, and drug residues. Furthermore, legal standards for some substances like PFAS have only recently been tightened. The PureFilter Mineral+ is certified according to NSF 42, 53, 61, and 372 — the same independent standards that drinking water laboratories and the Consumers' Association use as a reference.

For daily home use, an inline under-sink water filter scores the highest. You don't need to refill anything — it automatically filters all the water you use. The PureFilter Mineral+ is NSF 42, 53, 61, and 372 certified and filters PFAS, microplastics, heavy metals, fluoride, and chlorine. Via Swedish Mineral Rock™, it adds back calcium, magnesium, and potassium. View the complete comparison of home water filters.

A Brita water filter pitcher filters water in small quantities using a carbon filter and an ion exchanger. Advantages: cheap to buy. Disadvantages: constant refilling, limited capacity, does not filter microplastics or PFAS, and does not add minerals. The PureFilter Mineral+ is an inline water filter directly connected to the water line — no refilling, capacity of 15,000 to 20,000 liters per filter, filters more extensively, and adds minerals via Swedish Mineral Rock™.

A water softener removes limescale and replaces it with sodium – useful for appliances, but less suitable for drinking water. A water filter like the PureFilter Mineral+ tackles a much broader spectrum: PFAS, microplastics, chlorine, heavy metals, and medicine residues. And instead of removing minerals, the PureFilter actually adds calcium, magnesium, and potassium via Swedish Mineral Rock™.

The PureFilter Mineral+ works through five filter stages in one compact inline unit: a sediment filter (coarse dirt), an activated carbon block filter (chlorine, odours, chemicals), a hollow fibre membrane (bacteria, microplastics), Swedish Mineral Rock™ (remineralisation with calcium, magnesium, and potassium) and a fine filter (post-treatment). Unlike reverse osmosis — which removes beneficial minerals — the PureFilter retains and enriches the water.

Yes. The PureFilter Mineral+ is certified to NSF 53, the standard for removing harmful substances including PFAS, heavy metals such as lead and cadmium, and microplastics. The activated carbon filter and hollow fiber membrane effectively block these substances.

Yes. The PureFilter Mineral+ reduces limescale (calcium carbonate) and filters fluoride through the activated carbon layer and the hollow fiber membrane. At the same time, Swedish Mineral Rock™ adds calcium and magnesium back in the correct proportion — mineral-rich water without excessive limescale.

Yes. The PureFilter Mineral+ holds four NSF certifications: NSF 42 (taste and odor), NSF 53 (harmful substances including PFAS and heavy metals), NSF 61 (safety of materials in contact with drinking water), and NSF 372 (lead-free materials). NSF International is the leading independent testing organization for drinking water filtration worldwide — the same standards used by the Dutch Consumers' Association when evaluating water filters.

The PureFilter Mineral+ is connected under the counter to the existing cold water pipe using a T-piece connector. Installation takes 5 to 10 minutes — no plumber, no tools needed. The filtered water simply comes from your existing tap. Everything you need is in the package.

Yes. No holes are drilled and no faucets are replaced. The installation is completely reversible — if you move, you can disconnect the system in a few minutes. The system operates on standard water pressure (1–8 bar) and is compatible with almost all kitchen faucets, including combinations with a Quooker.

Yes. The PureFilter Mineral+ is fully compatible with a Quooker boiling water tap and other brands. The filter is connected to the cold water supply before the Quooker, so all water — including the boiling water — is filtered and mineralised.

For 1 to 3 people: annual replacement. For 4 or more people: every 6 months. The filter has a capacity of 15,000 to 20,000 litres. A replacement filter costs €49.90. Replace on time — a saturated activated carbon filter loses capacity and can release bound substances again via the breakthrough effect.

The PureFilter Mineral+ costs €149.00 including the first filter. A replacement filter costs €49.90 per year for 1 to 3 people — less than €0.14 per day. For comparison: daily bottled water quickly costs €1 to €2 per day. Includes 5-year warranty and 40 days free returns.

Delivery within 1 to 2 business days in the Netherlands. Pay via iDEAL, credit card, PayPal, or Klarna. Not satisfied? 40 days free returns, no questions asked. The filter housing comes with a 5-year warranty.

An average household consumes 700 to 1,500 litres of drinking water per year — or 700 to 1,500 1-litre plastic bottles. The PureFilter Mineral+ has a capacity of 15,000 to 20,000 litres per filter. One filter thus replaces up to 20,000 plastic bottles over its lifespan. Less plastic, less transport, less emissions.