What are the various ways by which we can generate water, i.e. by various chemical reactions, for commercial use in space stations and settlements. this process is required for a space settlement for continuous recycle, regeneration and pruification of water in the settlement

Water is one of the most crucial provisions astronauts need to live and work in space, whether orbiting Earth, working at a lunar base or traveling to Mars. The Water Processor Assembly developed will improve water recycling on the International Space Station.

in ISS(International Space station) awaterrecovery system that processes waste water from showers, sinks, and other crew systems and water vapor from the atmosphere that could be used for drinking in an emergency
other method includes reaction between hydrogen and oxygen but this is riskier as oxygen supports fire.