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NASA is completing the development of a regenerative water recovery system (WRS) for the International Space Station (ISS). The major assemblies included in this system are the Water Processor Assembly (WPA) and Urine Processor Assembly (UPA). Test activities have been completed for the system and planning for launch and on-orbit activation is underway. This paper summarizes the status as of April 2008 and describes some of the technical challenges encountered and lessons learned over the past year.

NASA is developing a regenerative water recovery system (WRS) for deployment on the International Space Station (ISS). The major assemblies included in this system are the Water Processor Assembly (WPA) and Urine Processor Assembly (UPA). The WPA has been developed by Hamilton Sundstrand Space Systems International (HSSSI), Inc., while the UPA has been developed by the Marshall Space Flight Center (MSFC). Test and verification activities have been completed for the system and planning for launch and on-orbit activation is underway. This paper summarizes the status as of April 2007 and describes some of the technical challenges encountered and lessons learned over the past year.