Company Profile · Life Support The lunar supply chain needs more than rockets Paragon Space Development Corporation builds the systems that keep people alive inside spacecraft. Its strongest evidence comes from Earth orbit; its larger opportunity is making that expertise useful farther from home. NASA astronaut Kayla Barron replaces a filter in the International Space Station’s Brine Processor Assembly. Historical ISS photograph, not lunar hardware in operation. Credit: NASA. Image and mission context . Paragon occupies an unusually practical corner of the space economy: managing air, water, humidity and heat so that a pressurized spacecraft can actually support people. Those functions rarely dominate launch coverage. They become decisive when crews cannot simply receive another shipment of consumables, or return quickly after a failure. For a publication focused on the lunar economy, that makes the Tucson company a supplier worth following rather than just another name attached to an exploration program. The investment in such systems is not synonymous with a functioning Moon base. Paragon’s public record spans demonstrated equipment, development hardware and announced program responsibilities, and those categories should stay separate. Its brine-processing technology has operated on the International Space Station. Its Gateway HALO role is an identified life-support development responsibility. Its proposed improvements for commercial stations are a pathway to additional customers, not proof of a deployed lunar recycling plant. Company snapshot Base: Tucson, Arizona. Core work: environmental control, life support and thermal-control systems. Evidence anchor: Brine Processor Assembly on the ISS. Lunar connection: announced HALO environmental-control and life-support work for Northrop Grumman. Leadership milestone: Mark Greeley appointed president and CEO in November 2025. 1. A supplier business, not a destination business Paragon’s customers buy engineering and hardware that fit inside a larger mission. The company’s history page describes a business concentrated in U.S. government agencies and major aerospace prime contractors. Its current life-support portfolio includes atmospheric ventilation and monitoring, humidity control, water recovery, and integrated electronics. That portfolio is broader than any single capsule, station or lunar architecture. The commercial logic is straightforward: a spacecraft builder needs a safe cabin but may not want to invent every component of that cabin. A specialist can sell the design, integration, testing and production expertise needed to turn a pressure vessel into a habitable vehicle. Paragon calls its approach “Common ECLSS,” emphasizing reuse of systems across vehicles and mission types to reduce non-recurring engineering cost and schedule. That is the company’s stated strategy, not an independently demonstrated cost saving across every program. This creates both leverage and dependence. A qualified subsystem may have relevance across several customers, but its delivery still depends on the prime contractor’s interfaces, procurement decisions and funding. A habitat delay can postpone supplier revenue without saying anything about whether the underlying technology works. Conversely, a new station concept is not automatically a new production order. Those distinctions matter when evaluating the company’s place in the cislunar industrial base. 2. What the ISS water milestone really proves The most concrete starting point is NASA’s June 2023 account of 98% water recovery on the ISS. NASA explained that the station’s Urine Processor Assembly recovers water through vacuum distillation, leaving a brine with additional recoverable water. The Brine Processor Assembly uses membrane technology and warm, dry air to extract more of that remaining water. The resulting humidity is collected and subsequently processed by the station’s broader water system. NASA reported that overall recovery had been roughly 93–94% before the brine processor, and that assessments with the BPA demonstrated 98%. Paragon identifies the BPA as an application of its patented Ionomer-membrane Water Processor technology and says it launched to the ISS in February 2021. This is meaningful flight heritage: a physical system working within a crewed spacecraft’s water-recovery architecture, rather than a laboratory efficiency claim standing alone. The boundary is just as important as the percentage. The 98% figure belongs to the combined station water-recovery system discussed by NASA. It is not a claim that Paragon alone supplied every treatment stage, that astronauts drink untreated distillate, or that a lunar habitat has already achieved the same result. NASA describes additional filtration, catalytic treatment, purity monitoring, reprocessing when needed and iodine addition before recovered water reaches storage for crew use. For lunar operations, the implication is logistical. Reducing the water that must be replaced can free transport capacity for other supplies. Yet the proper comparison includes the mass, power, maintenance, consumables and reliability of the recycling equipment itself. A short visit and a long-duration settlement may favor different architectures. The ISS result establishes useful experience; mission-specific testing must establish whether a particular design is the right answer elsewhere. 3. The HALO connection is specific—and dated In its May 20, 2021 announcement , Paragon said it was responsible for the design and implementation of HALO’s environmental control and life support system as part of Northrop Grumman’s team. The described functions included air and temperature management and safe levels of oxygen, carbon dioxide, humidity and trace contaminants. Its current portfolio page also identifies atmospheric ventilation work for the HALO program. That is a more direct lunar-domain connection than simply saying all space technology might someday reach the Moon. It names the customer relationship, the module and the engineering responsibility. However, a historical selection does not by itself establish today’s delivery status, acceptance testing, launch date or ultimate program configuration. This profile does not infer any of those milestones from the 2021 announcement, and it does not treat a planned orbital habitat as already operating. There is related flight experience in another vehicle. In May 2022 , Paragon reported successful operation of its Humidity Control Subassembly during Boeing’s uncrewed Starliner Orbital Flight Test-2. The company described a fixed-price development and production contract and said the technology was also being integrated into HALO. That is a dated company report about a particular subsystem test—not a blanket claim about the performance or future schedule of either spacecraft program. 4. Commercial stations offer a second route to scale The lunar market alone need not carry every development expense. In May 2024 , Paragon announced an Alternative Urine Processor engineering development unit for Starlab. It said the four-crew unit would be evaluated at NASA’s Marshall Space Flight Center under realistic operating conditions as part of technology maturation. The release linked the design to the ISS brine processor and described the evaluation as one stage of a multi-phase validation process. Paragon claimed 99% recovery from pretreated urine and an approximately three-times-smaller form factor for that development system. Those are company claims about a defined processor and feed stream. They should not be confused with NASA’s independently described 98% recovery for the ISS water system, nor with the Starlab team’s separate target of recycling at least 90% of station wastewater. Different system boundaries make superficially similar percentages unsuitable for a simple ranking. For the business, the useful question is whether development units become accepted flight hardware and repea