The Aspen 5500M is a small and portable water purification system designed for SOF elements that operate in independent small teams without access to larger, brigade-level water systems.
The fits in two storage boxes, making it much smaller and more portable than the large shipping container-sized Tactical Water Purification System (TWPS) which is used at the brigade level. It can be set up and ready to operate in about 15 minutes, with output of 1500-2000 gallons of water a day, which is enough to support a 12-man Operational Detachment-Alpha.
The Aspen uses no chemicals in its water purification process. Instead, it passes water through a series of filters before using ultra-violet light to sterilize the water.