With improvements in technology, desalination is becoming more viable both to provide source water and to treat process water
Water access is a problem that must be overcome when starting or enlarging any mining project, and a lack of sufficient water in arid regions can be a deal-killer. Another water problem associated with mining (especially coal mining) is that wastewater is often too saline for discharge without great harm to the environment.
Enter desalination. Its cost was long considered prohibitive for use in mining, but now, between new cost-efficient desalination technology and skyrocketing water costs and regulation, desalination in mining is becoming more viable.