Soldiers at Fort McCoy, Wis., for training in the 86th Training Division's Combat Support Training Exercise 86-18-04 set up a reverse-osmosis water purification unit, or ROWPU, on South Post at Big Sandy Lake on June 7, 2018, at Fort McCoy, Wis.

A ROWPU can provides potable water from any water source and can process up to 3,000 gallons an hour.

A ROWPU can not only draw water from a lake, but also from rivers, oceans, or even holes in the ice.

The system is built on to an Army trailer and includes its own generator and essentially a lab to operate the system from inside a covered enclosure.

The system uses a variety of chemicals and membranes to filter and purify the water.

Combat Support Training Exercise 86-18-04 is part of the Army Reserve's Combat Support Training Program, or CSTP. CSTP exercises are large-scale, collective-training exercises designed to immerse units into tactical training environments that closely replicate what they might experience in operational deployments.

The 86th Training Division is a tenant organization at Fort McCoy.

The exercise is another indicator of how Fort McCoy helps the Army meet its operational demands in support of combatant commanders across the globe, said Fort McCoy Directorate of Plans, Training, Mobilization and Security Director Brad Stewart.

Fort McCoy has supported America's armed forces since 1909. The installation's motto is to be the "Total Force Training Center." The post's varied terrain, state-of-the-art ranges, new as well as renovated facilities, and extensive support infrastructure combine to provide military personnel with an environment in which to develop and sustain the skills necessary for mission success.

Learn more about Fort McCoy online at, on Facebook by searching "ftmccoy," and on Twitter by searching "usagmccoy."