Adding to the below list, all the superstructures (Architectural & Structural design works) of the treatment plants are also designed by ER-GE.

Completed 15,036 m submarine outfall design works.

Completed 83,4 km creek rehabilitation design works.

Completed 8 solid waste projects which serve to 2,860,975 total equivalent populations having an overall volume of 15,891,000 m³.

Completed 36 sewerage and stormwater network designs with total network length of 5.311,4 km and flow capacity of 3,155,169 m³/day.

Completed 53 wastewater treatment plants which serve to 22,435,910 total equivalent population having an overall capacity of 3,891,795 m³/day.

Completed 110 km water network with a total capacity of 45,000 m³/day of potable water.

Completed 342 km water transmission lines transmitting 1,229,206 m³/day water in total.

Completed 15 water treatment plants which serve to 6,852,195 total equivalent population having an overall capacity of 1,474,963 m³/day.

Completed supervision of construction works for water and wastewater treatment plants as well as PMC (Project Management Consultancy) services which serve to 3,444,115 total equivalent population having an overall capacity of 756,177 m³/day.