2019-06-262019-06-262019-07-07ICES_2019_36https://hdl.handle.net/2346/84720Layne Carter, National Aeronautics and Space Administration (NASA), USAJill Williamson, National Aeronautics and Space Administration (NASA), USADaniel Gazda, National Aeronautics and Space Administration (NASA), USAChris Brown, National Aeronautics and Space Administration (NASA), USARyan Schaezler, Boeing, USAFrank Thomas, S&K Global Solutions, USAJesse Bazley, Stinger Ghaffarian Technologies, Inc, USASunday Molina, The Boeing Company, USAICES404: International Space Station ECLS: SystemsThe 49th International Conference on Environmental Systems as held in Boston, Massachusetts, USA on 07 July 2019 through 11 July 2019.Water management on ISS is responsible for the provision of water to the crew for drinking water, food preparation, and hygiene, to the Oxygen Generation System (OGS) for oxygen production via electrolysis, to the Waste & Hygiene Compartment (WHC) for flush water, and for experiments on ISS. This paper summarizes water management activities on the ISS US Segment and provides a status of the performance and issues related to the operation of the Water Processor Assembly (WPA) and Urine Processor Assembly (UPA). This paper summarizes the on-orbit status as of June 2019, describes the technical challenges encountered and lessons learned over the past year.application/pdfengWPAUPAwaterPresentations