Filtration vs. Disinfection
Mam Nature Swiss vs. UV Water Purifiers
UV purifiers and water filters solve completely different problems. UV kills microorganisms. Filtration removes chemical contaminants. This comparison explains when you need one, the other, or both — particularly for Swiss and European households.
These technologies solve different problems
UV purifiers kill microorganisms. They do not remove chemical contaminants. In Swiss and European municipal water — which is already disinfected — the primary risks are PFAS, heavy metals, and pesticides, not bacteria. Filtration addresses these chemical threats; UV does not.
Complementary to filtration for well water.
Side-by-Side Comparison
| Criterion | Mam Nature Swiss (Filtration) | UV Purifiers (Disinfection) |
|---|---|---|
| PFAS removal | ✓ 95–99.9% (ETH Zurich) Full PFAS spectrum certified. | – None UV light cannot break down or remove PFAS compounds. Chemical structure of PFAS is unaffected by UV-C radiation at standard intensities. |
| Heavy metal removal | ✓ 95–99% (ETH Zurich) Lead, copper, arsenic, cadmium — independently certified. | – None UV does not remove dissolved metals. Heavy metals pass through UV treatment unchanged. |
| Bacteria / virus elimination | – Not a primary function Selective adsorption is designed for chemical contaminant removal, not pathogen disinfection. | ✓ 99.99% (most pathogens) UV-C at 254nm effectively deactivates bacteria, viruses, and protozoa (including Giardia and Cryptosporidium) by damaging DNA. |
| Microplastics removal | ✓ Yes — down to 0.1 µm Physical membrane pre-stage removes microplastics. | – None UV does not physically remove particles from water. |
| Chlorine / taste | ✓ Effective Chlorine, taste, and odour compounds removed. | – None UV does not remove chlorine or affect water taste. |
| Mineral retention | = Full retention Selective adsorption preserves beneficial minerals. | = Full retention UV does not alter the mineral content of water. |
| Coverage | = Whole house Point-of-entry. All taps, showers, appliances. | = Whole house available UV systems can be installed at the point-of-entry for whole-house coverage. |
| Electricity | ✓ None required Operates on mains water pressure alone. | – Required (constant) UV lamp must run continuously when water is flowing. Typical power consumption 30–80W. |
| Water waste | = Zero 100% pass-through filtration. | = Zero UV does not waste water. |
| Relevance for municipal water | ✓ High Municipal water is already disinfected. The primary risks are chemical contaminants (PFAS, heavy metals, pesticides) — which filtration addresses. | – Low Municipal water in Switzerland and the EU is already disinfected at the treatment plant. UV adds redundant biological protection but does not address chemical contamination. |
| Relevance for well water | – Partial Removes chemical contaminants but does not disinfect. Well water users may need both filtration and disinfection. | ✓ High Private wells are the primary use case for UV. Untreated water sources carry bacterial, viral, and protozoan risks that UV effectively addresses. |
| Maintenance | = ~10 min/yr (cartridge) Annual cartridge replacement. | = Annual lamp replacement UV lamps lose intensity over time and must be replaced annually (~€80–€150). Quartz sleeve cleaning required periodically. |
| Upfront cost | – €760–€3,598 Essential to Complete Set Plus. | ✓ €200–€800 Residential UV systems are relatively affordable. |
| Combinability | = Can be combined with UV For well water, combining Mam Nature filtration with UV disinfection provides comprehensive protection against both chemical and biological threats. | = Can be combined with filtration UV + filtration is the gold standard for well water treatment. |
Common Questions
Do I need UV purification if I'm on municipal water in Switzerland?
Generally no. Swiss municipal water is rigorously disinfected at the treatment plant. The primary risks in municipal water are chemical contaminants — PFAS, heavy metals, pesticides, and pharmaceuticals — not bacteria or viruses. Filtration addresses these chemical threats; UV does not. UV is most valuable for private wells, mountain springs, and other untreated water sources.
Can UV light remove PFAS from water?
No. PFAS are extraordinarily stable chemical compounds — the carbon-fluorine bonds that make them "forever chemicals" are not broken by standard UV-C disinfection at 254nm. Advanced oxidation processes (UV + hydrogen peroxide at industrial scale) can partially degrade some PFAS, but residential UV systems are not designed for this and have no effect on PFAS concentrations.
Should I combine UV and filtration?
If you are on a private well or untreated water source, yes. The ideal well water treatment chain is: sediment pre-filter → Mam Nature Swiss Fine Filter (removes PFAS, heavy metals, pesticides) → UV disinfection (eliminates bacteria, viruses, protozoa). This addresses both chemical and biological threats comprehensively.
Which is better for a Swiss home — UV or a water filter?
For a Swiss home on municipal water: a water filter. Municipal water is already disinfected, so UV adds no value. The documented risks are PFAS, heavy metals, and pesticides in certain catchment areas — which filtration removes. For a Swiss home on a private well or mountain spring: both. UV for biological safety, filtration for chemical safety.
Does Mam Nature remove bacteria?
Mam Nature's particle filter stage removes particles down to 0.1 µm, which physically blocks most bacteria (typically 0.2–5 µm). However, the system is not designed or certified as a disinfection device. For guaranteed pathogen elimination, UV treatment is the appropriate technology.
More comparisons
Remove What Matters — PFAS, Heavy Metals, Pesticides
For municipal water, chemical filtration is the priority. ETH Zurich certified. Swiss Made. One cartridge per year.