Water Fine Filter — 316L Stainless Steel Whole-House Filtration Housing
WATER FINE FILTER

The Water Fine Filter is a premium whole-house filtration housing built from medical-grade 316L stainless steel — completely lead-free, corrosion-resistant, and designed to last a lifetime. It is installed on your main water supply line and houses the Swiss Water Cartridge inside for complete whole-house water treatment.
316L Stainless Steel: Medical-grade housing — no lead-containing brass parts
Whole-House: Point-of-entry installation — every tap receives filtered water
Food-Safe: All non-metal parts are certified food safe
1" Connections: 2 x 3/4 inch adaptors included for flexible installation
Premium 316L Stainless Steel Housing
Unlike most water filters on the market that use brass fittings containing lead, the Mam Nature Water Fine Filter is built entirely from 316L medical-grade stainless steel. This is the same grade of steel used in surgical instruments and food processing equipment.
Zero Lead Contamination
Standard brass water filter housings contain up to 4% lead, which can leach into your water over time. Our 316L stainless steel housing eliminates this risk entirely.
Lifetime Durability
The housing is pressure-tested to 16 bar by the Swiss Safety Center. It is corrosion-resistant, impact-resistant, and designed for decades of maintenance-free operation.
Whole-House Point-of-Entry
Installed on your main water supply line before it branches to individual taps. Every outlet in your home — kitchen, bathroom, garden — delivers filtered water.
10-Year Manufacturer Warranty
The housing is covered by a 10-year manufacturer warranty. The only ongoing maintenance is replacing the Swiss Water Cartridge inside — once per year, 10 minutes, no tools.
The Swiss Water Cartridge Goes Inside
The Water Fine Filter housing is designed to hold the Swiss Water Cartridge — our ETH Zurich certified 4-stage filtration cartridge that does the actual contaminant removal. The cartridge uses patented protein-fiber adsorption technology to eliminate PFAS, heavy metals, pesticides, and radioactive substances at up to 99.98% retention while preserving essential minerals.
- ETH Zurich certified: up to 99.98% contaminant retention
- 4-stage filtration: membrane + carbon + Aqualen™ protein-fiber + ionized silver
- Preserves beneficial minerals (calcium, magnesium, potassium)
- Replace once per year — 10 minutes, no tools
- 150 m³ capacity per cartridge
Frequently Asked Questions
What is the Water Fine Filter?
The Water Fine Filter is a whole-house filtration housing made from 316L medical-grade stainless steel. It is installed on your main water supply line (point-of-entry) and holds the Swiss Water Cartridge inside, which performs the actual contaminant removal. Every tap in your home receives filtered water.
Why is 316L stainless steel important?
Most water filter housings on the market use brass fittings that contain up to 4% lead, which can leach into your drinking water over time. The Water Fine Filter uses 316L medical-grade stainless steel — the same grade used in surgical instruments — eliminating any risk of lead contamination from the housing itself.
How is the Fine Filter maintained?
The housing itself requires zero maintenance and comes with a 10-year manufacturer warranty. The only upkeep is replacing the Swiss Water Cartridge inside once per year (or after 150 m³). This takes approximately 10 minutes and requires no tools.
Is this a whole-house filter or just for drinking water?
The Fine Filter is a whole-house (point-of-entry) system, installed on your main water supply line before it branches to individual taps. Every outlet in your home — kitchen, bathrooms, garden — receives filtered water. It covers drinking, cooking, showering, and bathing.
What does the Swiss Water Cartridge inside remove?
The cartridge removes PFAS (forever chemicals), heavy metals (lead, cadmium), BPA, pesticides, chlorine, drug residues, aluminium, and radioactive substances — all at retention rates of up to 99.98%, certified by ETH Zurich. It preserves essential minerals like calcium and magnesium.
Technical Data — Fine Filter Housing
- Housing material:
316L medical-grade stainless steel (no lead-containing brass parts)
- Quality:
All non-metal parts are food safe
- Pressure rating:
16 bar (Swiss Safety Center certified)
- Connections:
1 inch (2 x 3/4 inch adaptors included)
- Flow capacity:
1.5 m³/h (at 4 bar water pressure)
- Warranty:
10-year manufacturer warranty on housing
- Cartridge:
Swiss Water Cartridge (sold separately or included in system sets) — replace every 150 m³ / 1x per year
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