- Metito, Hassan Allam Construction, The Arab Contractors (Osman Ahmed Osman & Co) , Orascom Construction
- 86.8 cubic metre(s) per second
- Egypt (Dabaa, Egypt)
The largest water treatment plant is New Delta Irrigation Water Treatment Plant with a capacity of 86.8 m³ (3,065 ft³) per second achieved by Orascom Construction, The Arab Contractors (Osman Ahmed Osman & Co), Hassan Allam Construction, and Metito (All Egypt), in Dabaa, Egypt on 26 July 2023.
Delta treatment plant is also the largest facility in terms of surface area.