In the LUWEX project, under DLR leadership and with European partners, researchers tested a process to extract and purify water from ice-containing simulated lunar regolith at TU Braunschweig. In October 2024, DLR reported that the team recovered and processed almost 65% of the water in the simulated Moon rock, exceeding the goal of at least 0.5 litres per test run and producing more than 3 litres of clean water across multiple experiments.
Technically, this is a major advance for in-situ resource utilization: lunar water can support drinking water, oxygen production by electrolysis, and hydrogen-based rocket propellant, reducing dependence on Earth resupply. The result shows a complete extraction-and-purification chain can work in a lunar-relevant environment, which lowers one of the largest logistical barriers to permanent habitation and improves the odds of survivable infrastructure after terrestrial collapse or supply interruption.
For the Ark, the immediate priority is to track the LUWEX follow-on path to lunar field validation before 2030, including capture efficiency, energy cost per kilogram, contamination control, and scalability from laboratory batches to continuous operations. The team should integrate these findings into life-support redundancy models, polar-site architecture, and propellant loop planning, while monitoring whether the system can achieve higher recovery rates than 65% under real lunar thermal-vacuum, dust, and gravity conditions.