Egypt is now officially home to the world’s largest water treatment facility: Our friends at Hassan Allam Construction, Orascom Construction, Metito and Arab Contractors have received four Guinness World Records for their recently completed New Delta Irrigation Water Treatment Plant, a joint press release (pdf) announced this week. The records include the world’s largest water treatment facility, the most capacious and operationally robust water treatment plant, the largest area for epoxy coating in structures and the biggest sludge treatment plant globally.