The quality of reclaimed water in space station is one of the most important factors in influencing the flight safety and astronauts＇health. The practice and experiences of NASA and Russia in supplying reclaimed water in ISS are summarized. The main possible contaminating sources in reclaimed water are analyzed, and the contamination prevention strategy, the quality standards of reclaimed water, as well as the monitoring technology and methods are discussed.%空间站再生水水质是影响飞行安全和航天员健康的重要因素。概述美、俄在国际空间站上再生水供给的策略，并就再生水中污染物的主要来源，再生水水质要求、再生水净化措施以及再生水水质的监测技术与方法等进行讨论。
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