The Sawyer filter is a low-cost all-in-one water filter ideal for providing emergency drinking water.
Each filter comes in a sealed bag, compete with fittings for attaching to a plastic bucket and a diagrammatic instruction sheet.
It is possible for each Disaster Aid Response Team (DART) member to bring up to 75 Sawyer filters with their luggage on initial deployment.
A “build your own gravity system” can yield up to 90 litres of clean water per hour from any freshwater source, easily enough to protect a family.
The filter removes:
- 99.99999% of all bacteria, such as salmonella, cholera and E.coli.
- 99.9999% of all protozoa, such as giardia and cryptosporidium.
Typically the filter is attached to a locally purchased plastic bucket or any other clean unused plastic container by the attached hose.
As the water passes through the filter it can either be directed to a clean water container or someone can drink directly from the end of the filter.
Sawyer SP180 Water Filter Bucket Kit (without bucket)

Filters and purifies up to 780 litres of clean water per day with 0.02 micron absolution filtration.
This system has an output of 1 litre per minute when used as a gravity system with a bucket (not included). Filters bacteria.
Cost = $40euro incl. freight
Sawyer SP128 mini Water Filter

Filters up to 450,000 litres of water; use attached to plunger to backwash regularly
Provides 0.1 micron absolute filtration — removing 99.99999% of all bacteria
Attach the easy-to-use MINI to the included drinking pouch, use the included straw to drink directly from a water source, connect it to hydration pack tubing, or screw it onto standard disposable water and soda bottles
Cost = 35 euro incl. freight
Sawyer SP128 mini Water Filter
SP4320

SP4321

replacement purifier
A dual stage purifier/lasts 400 uses/ able to treat the toughest water sources. Inside the silicone bottle is a foam purifier that uses adsorption to remove chemicals, pesticides, heavy metals, and viruses.
The Micro Squeeze Filter on top /lasts 450,000 litres/ removes the standard pathogens/ bacteria along with any other sediment, particulate & microplastic. SP4320 filters metals, chemicals, bacteria, and viruses.
Cost = 215 euro incl. freight SP4320 incl filter
Cost = 165 euro incl. freight SP4321
replacement purifier to be used with existing filter