The Swiss Water Cartridge — ETH Zurich Certified Contaminant Removal
THE SWISS WATER CARTRIDGE
The world's only 100% natural filtration cartridge certified by ETH Zurich. Patented protein-fiber adsorption technology eliminates PFAS, heavy metals, pesticides, and radioactive substances at 95–99.9% retention — while preserving essential minerals like calcium, magnesium, and potassium.
Stage 1 — Physical: Dual membrane pre-filtration at 20 µm & 5 µm
Stage 2 — Activated carbon: Adsorption of chlorine, organic compounds & odour molecules
Stage 3 — Aqualen™: Protein-fiber adsorption for PFAS, heavy metals & drug residues (95–99.9%)
Stage 4 — Ionized silver: Cartridge sterility without silver entering drinking water
How the Swiss Water Cartridge Works
Conventional activated carbon filters remove contaminants broadly — including the beneficial minerals your body needs. Reverse osmosis systems go even further, stripping water of everything and producing acidic, demineralised water. The Swiss Water Cartridge uses a completely different approach: selective protein-fiber adsorption technology, patented and certified by ETH Zurich.
Stage 1 — Physical Membrane Pre-filtration (20 µm & 5 µm)
Water first passes through dual physical membranes at 20 µm and 5 µm. These remove visible and near-visible particles — sediment, rust, microplastics larger than 5 µm — protecting the downstream filtration stages and extending cartridge life.
Stage 2 — Activated Carbon Adsorption
Activated carbon removes chlorine, chloroform, organic compounds, taste and odour molecules, and a wide spectrum of pesticides and petrochemicals through adsorption — contaminants bind to the carbon surface and are permanently removed from the water stream.
Stage 3 — Aqualen™ Protein-Fiber Adsorption (PFAS & Heavy Metals)
This is the core innovation certified by ETH Zurich. The Aqualen™ fibers use molecular-level protein adsorption to selectively capture PFAS (forever chemicals), heavy metals (lead, mercury, cadmium, arsenic), drug residues, radioactive substances, and phenols at retention rates of 95–99.9% — while the mineral ions (calcium, magnesium, potassium) pass through unchanged.
Stage 4 — Ionised Silver Sterility Layer
A silver ion layer within the cartridge prevents bacterial growth inside the filter medium — ensuring the cartridge remains sterile between uses. Critically, silver does not leach into the drinking water at any measurable level.
ETH Zurich Certified — What the Science Shows
The Swiss Water Cartridge has been independently tested and certified by ETH Zurich — consistently ranked among the world's top 10 universities. The official Filtration Performance Report documents retention rates across all contaminant categories.
Certifications held: ETH Zurich Filtration Performance Certificate · ISO 13485 Quality Management · Swiss Safety Center Pressure Test Certificate (16 bar) · All components manufactured in 316L medical-grade stainless steel with no lead-containing brass parts.
View official lab reports & certificates →Frequently Asked Questions
What contaminants does the Swiss Water Cartridge remove?
Certified by ETH Zurich, the cartridge removes PFAS (forever chemicals), heavy metals (lead, mercury, cadmium, arsenic), microplastics, pesticides, chlorine, drug residues, phenol, aluminium, fluoride, and even radioactive substances — all at retention rates of 95–99.9%.
Does the cartridge remove beneficial minerals?
No — this is the core advantage of the Aqualen™ protein-fiber technology. Unlike reverse osmosis, which strips everything including minerals, the selective adsorption targets harmful contaminants while allowing beneficial mineral ions (calcium, magnesium, potassium) to pass through unchanged. Your water remains naturally mineralised.
How often does the cartridge need to be replaced?
The Swiss Water Cartridge is replaced once per year (or after 150 m³ of water, whichever comes first). Replacement takes approximately 10 minutes and requires no tools — simply unscrew the housing, swap the cartridge, and close.
What is the flow rate?
The cartridge delivers up to 2,000+ liters per hour — among the highest in the industry. This means zero noticeable pressure loss and instant access to filtered water from every tap, even when multiple outlets are running simultaneously.
How is this different from a Brita or jug filter?
Jug filters are countertop devices that filter only cold drinking water at a low flow rate, typically replacing carbon every 4 weeks. The Swiss Water Cartridge treats all water entering your home, achieves 95–99.9% removal of PFAS and heavy metals (vs. partial removal by carbon jugs), lasts 150 m³ per cartridge, and is certified by ETH Zurich — a standard no consumer jug filter meets.
Is the cartridge compatible with all Mam Nature systems?
Yes. The Swiss Water Cartridge fits into the Water Fine Filter housing, which is included in all system sets (Complete Set, Complete Set Plus, Essential, Essential Plus, Eco Set, Eco Set Plus). It can also be purchased separately as a replacement.
Technical Data
- Filtration media:
100% natural protein fibers (Aqualen™) + activated carbon
- Compatible housing:
Water Fine Filter — 316L stainless steel (no lead-containing brass parts)
- Maintenance:
Replace cartridge every 150 m³ (average 1x per year) — 10 minutes, no tools
- Pressure rating:
16 bar (Swiss Safety Center certified)
- Flow capacity:
2,000+ L/hour
- Cartridge capacity:
150 m³
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