To improve the brackish groundwater desalination best practice in Matrouh, it is recommended to enhance system efficiency through optimized pre-treatment units and regular membrane maintenance to extend reverse osmosis (RO) lifespan. Strengthening energy efficiency by improving the design of photovoltaic (PV) systems and integrating energy storage solutions would ensure more stable operation. Capacity building for local operators is essential to improve technical performance and reduce downtime. For replication and scaling up, modular and decentralized system designs are recommended to allow flexible implementation in remote and water-scarce areas. Detailed hydrogeological assessments should be conducted before installation to ensure sustainable groundwater abstraction. Additionally, improving brine management practices is necessary to minimize environmental impacts. Financial and institutional support mechanisms should also be strengthened to facilitate wider adoption and long-term sustainability of the technology in similar arid and semi-arid regions.