GRANDER revitalized water for your hotel

A lot is claimed about GRANDER water, from all sides. We believe healthy scepticism is exactly the right attitude. So we will not beat about the bush — we will answer the three questions almost everyone asks. Then you decide for yourself.

"Is this scientifically sound, or hocus-pocus?"

The most important question — and we won't dodge it. Yes, water revitalization is controversial, and you will find criticism online too. We know that, and we take it seriously. Our answer isn't claims but research: together with Wetsus, the European centre of excellence for sustainable water technology, two studies were produced that independent peer-reviewed journals examined and published. In 2016, three independent measurement methods showed that treated water differs measurably from untreated water. In 2022, a team from six European universities demonstrated that the natural microbiology in treated water remains more stable. We don't promise miracles — we show what was measured. And we warmly invite you to read the studies yourself.

Here are the studies:
Study 2016: DOLLOP formation in tap water (PDF) Study 2022: Microbiological stability (PDF) Supplementary study document (PDF)

"Is my drinking water even still safe with this?"

The short answer: yes. The water revitalizer works by purely physical means — no chemicals, no additives, no filters. What comes out of the tap is still the same tested tap water, meeting the same strict drinking water standards that apply right across the United Kingdom. But safe doesn't mean ineffective. On the contrary — inside the device something very precise is going on:

The housing. A stainless-steel cylinder fitted directly into the mains supply. All the water flows through it — no detours and no pressure loss.
The water core. Inside sits hermetically sealed GRANDER water with a particularly stable internal structure. It never touches your drinking water.
The transfer. In combination with a weak magnetic field, the water core passes its stable structure on to the water flowing past. This is exactly where revitalization takes place — with the measurable effects from the studies above.
The result. Revitalized water throughout the property. Without electricity, without maintenance — one device serves a building for a good 20 years or more.

Cross-section of a GRANDER water revitalizer with labels — The cross-section: 01 housing · 02 water core · 03 transfer to the water flowing past · 04 revitalized water

"Will my guests actually notice a difference?"

Yes — a great many guests notice it and mention it unprompted. Tap water that tastes softer and fresher, as if straight from the spring. A pleasant feeling on skin and hair after showering. Mild, gentle pool water. And in the kitchen, coffee, tea and dishes are made with revitalized water, and you can taste it. Over 10,000 hotels and restaurants worldwide work with it, many of them for decades — businesses that would not keep doing so if their guests noticed no difference. In the end, your own impression is what counts: try it yourself. Your own glass of water is the most honest test.