The Adelaide Desalination Plant relies on intake and outfall tunnels to efficiently draw seawater from the Gulf St Vincent and discharge brine back into the ocean. Its innovative seabed intake system utilises screens to limit marine life intrusion while maintaining optimal water flow. Similarly, the outfall tunnel incorporates carefully designed diffusers to minimize environmental impact. These tunnels play a pivotal role in the plant's sustainable freshwater production, underscoring its commitment to both efficiency and environmental stewardship. ROV (Remotely Operated Vehicle) technology is preferred for inspecting desalination plant tunnels due to its ability to navigate confined spaces with precision and flexibility. AUS-ROV’s systems come equipped with high-definition cameras and specialised sensors to provide detailed visual inspections, detecting corrosion, damage, blockages and other anomalies. Operating remotely reduces the need for human divers therefore eliminating safety risks and allowing for complete inspection of the 1.6km and 1km tunnels. Overall, ROV technology offers a safe, efficient, and comprehensive method for inspecting desalination plant tunnels, ensuring optimal performance and reliability of the infrastructure.