Portable Water Treatment

Filter or purifier: what's the difference?

A filter traps particles with its membrane: bacteria, protozoa, sediment. A purifier goes further and also neutralises viruses, which are smaller, using very fine filtration, chemical treatment or a UV lamp. In Europe, a good filter is often enough; in regions with viral risks, a purifier becomes essential. So your choice depends on the quality of the water you'll encounter.

Filtration systems

Several technologies exist: pump filters (you pump to filter), gravity systems (water flows from a dirty reservoir to a clean one, with no effort), straws or filter bottles (you drink directly). Gravity systems shine at camp for treating large volumes; pumps and straws are handy on the move. Check the filtration fineness (in microns): on many models, a hollow-fibre membrane stops bacteria and protozoa, while an activated carbon cartridge improves the taste of the water.

Flow rate, lifespan and weight

Compare the flow rate (litres per minute), the cartridge lifespan (in litres) and the weight of the system. A light, fast model carries without weighing you down. Flushing and rinsing the filter after use keeps the flow rate up; protect it from frost. You'll find the rest of your kit among our hiking accessories and gear.

Gearing up properly for water

When you're self-sufficient on the trail, safe drinking water is vital: a filtration system lightens your rucksack (less water to carry) while keeping every refill safe. Pair it with a water bottle or water bladder to carry your treated water.