The LifeStraw Family Water Filter

If you are looking to buy the LifeStraw® Family water filter & purifier, you will unfortunately have to wait a bit longer, as it is not yet available for sale.

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The LifeStraw Family Water Filter:

The Lifestraw Family is a point-of-use instant microbiological water purifier that filters up to 18,000 litres of water, enough to supply a family of five with clean drinking water for up to three years.

• Filters up to 18,000 litres of water
• Removes minimum 99.9999% of bacteria (>LOG 6 reduction)
• Removes minimum 99.99% of viruses (>LOG 4 reduction)
• Removes minimum 99.9% of protozoan cysts (>LOG 3 reduction)
• Removes turbidity
• Requires no electrical power, batteries, or replacement parts
• Requires no running water or piped-in water supply
• Has an easy-to-clean pre-filter and purification cartridge
• All raw materials are US FDA compliant or equivalent
• Flow-rate of 12-15L/hour of purified water

How it works

When untreated water is poured into the water bucket, the textile prefilter removes particles larger than 80μm. Gravity then pushes the water down the plastic hose to the purification cartridge. This cartridge contains an ultrafiltration membrane which stops all particles larger than 20nm; this includes turbidity particles, microbes, protozoan parasites, bacteria, and viruses. Purified water passes through the membrane and can then be collected from the blue tap. Because all microbes are stopped by the 20nm membrane, the purified water complies with the US EPA requirements of LOG 6/4/3 reduction of microbes concentrations for water purifiers. The LifeStraw Family filter also contains a chlorine chamber located below the top container, which elutes low amounts of active chlorine to protect the ultrafiltration membrane from fouling. This leads to an extended lifetime for the water purifier.

When the cleaning bulb is squeezed, particles on the dirty side of the membrane are lifted by backpressure and are removed by flushing through the exit valve. The filter also has an auto-clog mechanism, so that once the life of the product is over it will no longer deliver water.