The Department has the statutory responsibility for the conception, planning, design, procurement and development of Engineering Infrastructure and services in the Federal Capital City according to the Abuja Master Plan as shown in the drawing below and regional roads within the Federal Capital City (FCT).
Activities of the Department also include geological investigation and Engineering studies, Engineering designs, construction and supervision of infrastructural facilities. These facilities include Roadworks, Water supply, Storm and Foul Sewage, Electricity and Telecommunications system.

FCC DIVISIONS
In order to effectively perform its functions, the department of Engineering Services is structured into six (6) divisions and two (2) specialized units. The divisions are as follows:
1.            City Infrastructure (North)
2.            City Infrastructure (South)
3.            City Infrastructure (Central & Regional)
4.            Water and Sewage
5.            Logistics and Design
6.            Electrical
 
SPECIALIZED UNITS:
1.            Geology
2.            Administration.
 
ACHIEVEMENTS OF THE DEPARTMENT
District Development:
The Abuja master plan provides for the division of the Federal Capital City (FCC) into four phases namely phases I, II, III & IV. Each phase is further sub-divided into districts. Sequel to the adoption of the city master plan, detailed engineering studies on the provisions of the master plan were carried out and various preliminary and final engineering designs for the infrastructural facilities for districts in phase 1 and some other districts in other phases of the city were made. Physical construction of the city started sometime in 1979. To date, about 90% of phase I comprising of 5 districts namely: Garki, Wuse, Maitama, Asokoro and Central Area Business district have been achieved. These districts have been serviced with Roads, Water, Electricity, Sewer Lines and Telecommunication Ducts.
In phase II of the city, provision of Infrastructural facilities in the Utako district have been completed while works are at various stages of completion in Jabi and Gudu Districts. Also works are at various stages of implementation in Karmo and Idu districts in phase III of the City. In addition to the initial districts specified in the Abuja Master Plan, Asokoro Extension, Katampe Extension and Guzape Districts were later created. Works have been completed in Asokoro Extension while works are at various stages of completion in Katampe extension and Guzape districts. Layouts of Districts in Phases I, II, III and IV showing the developed and the outstanding districts to be provided with infrastructure is shown below while table 1 shows the stages of completion of Infrastructure in the districts apart from phase I.

Table 1: Stage of completion of infrastructure of Districts in Phase II and III.  
WATER & SEWAGE
Ø    Rehabilitation of Sewage Aerators in phase I of the City.
Ø    Construction of Tanks 2 & 5 with associated trunk mains.
Ø    Construction of phases 3 & 4, 20,000m3/Hr LUD Water Treatment Plant.
Ø    Construction of Tanks 1 & 6 and Associated trunk mains.
 
LOGISTICS & DESIGN
Final Design of Engineering infrastructure to the following districts in phases II & III of the city have been completed.
Ø       Durumi.
Ø       Katampe
Ø       Kado
Ø       Kukwaba
Ø       Kaura
Ø       Gwarinpa I
 
In addition final engineering design of the following districts are in progress:
Ø       Wuye
Ø       Duboyi
Ø       Gaduwa
Ø       Dutse
Ø       Mabushi
Ø       Jahi
Ø       Kafe
Ø       Dape
Ø       Nbora,
Ø       Pyakasa
Ø       Galadimawa
Ø       Okanje
Ø       Dakwo
Ø       Lokogoma
Ø       Wumba
Ø       Dakibiyu
 
Also the Engineering Design and production of tender documents of the followings are at various stages of completion:
-      Infrastructure to Aviation Village near the Airport are at various stages of completion. 
-      Interceptor sewer schedule V
-      Interceptor Sewer in Phases II & III North of Wupa River.
-      Secondary Water Line Loop 2 and 5.
-      Secondary Water Line Loop 1 and 6.
 
GEOLOGY
1.            Subsoil and Geophysical investigations of 6 districts in Phase II namely.
(i)                  Dakibiyu
(ii)                 Kukwaba National Park
(iii)                Duboyi
(iv)               Kaura
(v)                 Kado
(vi)               Gaduwa
 
2.            Hydro Geological Survey of Kuje Area.