GIBB’s Water Sector offers a comprehensive range of services in water and infrastructure engineering that range from investigations, master planning and feasibility studies through to design, procurement and contract supervision.

Our full range of services are offered for dam engineering, hydropower, tunnels and underground structures, water engineering, storage, stormwater and sanitation engineering. The team is supported by transportation, urban planning, power, control and instrumentation engineers, environmental scientists, economists and other specialists to fulfil consultancy roles across the full water and infrastructure value chain.


The water sector’s service offerings encompass the entire water cycle including source, storage, treatment, conveyance, and reclamation.
Services capabilities include:

Hydrological, yield, systems modelling and water resources studies
Groundwater resource development
Flood studies and floodline mapping
Hydraulic model studies
Stormwater assessments
Dams (pre-feasibility to detailed design and construction supervision)
Hydro power (pre-feasibility to detailed design and construction supervision)
Geology, seismic studies, geotechnics, underground and tunnel engineering
Catchment management plans
Water supply and storage

Infrastructure including pipelines, pump stations and reservoirs
Bulk sewers and pumping systems
Network modelling and reticulation design
Water treatment processes
Sanitation (including on-site)
Wastewater treatment process design
Wastewater re-use
Sewer network modelling and reticulation design

Water Resources Studies.
Hydrological, Yield Analysis, Systems Modelling.
Water Supply and Storage.
Groundwater Resource Development.
Flood Studies and Flood Line Mapping.
Stormwater Assessments.
Hydraulic Model Studies.
Water Treatment Process Design.
Bulk Pipelines, Pump Stations and Reservoirs.
Water Network Modelling and Reticulation Design.

Water Conservation and Water Demand Management.
Sewer Network Modelling and Reticulation Design.
Bulk Sewers and Pump Stations.
Sanitation (including on-site).
Waste Water Treatment Process Design.
Waste Water Reclamation.
Catchment Management Plans.
Non Revenue Water Analysis.
Geology, Seismic Studies, Geotechnics, Underground and Tunnel Engineering.

Selected Project Experience


OR Tambo District Municipality

Greater Mthatha, Eastern Cape, South Africa

GIBB’s Responsibilities:
GIBB was appointed to review the existing Thornhill Bulk Water Supply System, as well as the development of a Master Plan to extend the existing water supply system.

Further responsibilities included the planning, design and construction supervision of five development corridors up to 40 km out of Mthatha town.


Eskom Holdings SOC Limited

KwaZulu-Natal, South Africa

GIBB’s Responsibilities:
GIBB was appointed to design and monitor the construction of a 1 344 MW pumped storage scheme in the Drakensburg of South Africa. The design and construction included an upper reservoir (50 m high CFRD dam) and lower reservoir (40 m high RCC dam), an underground power house complex, with access tunnels and associated waterways which link the two reservoirs.

The project also involved the ancillary works that included buildings, roads, transmission lines and temporary and permanent infrastructure. The project upper dam is able to store 21 000 MWh of energy.

GIBB’s tasks included engineering design for: civil; hydropower; underground; dams; mechanical; foundation; structural, and electrical enginnering. Additionally, the scope included documentation, cost estimations environmental services, contract administration, design monitoring, project management and construction supervision.


OR Tambo District Municipality

Mthatha, Eastern Cape, South Africa

GIBB’s Responsibilities:
Master planning; Feasibility study; Design; Construction supervision.


Buffalo City Metropolitan Municipality

Eastern Cape, South Africa

GIBB’s Responsibilities:
GIBB’s engineering design tasks included the amalgamation of four smaller wastewater treatment works into a 35 Mℓ/d activated sludge plant, a pump station, a 800 m long x 315 mm diameter rising main, and 20 km of 600 mm to 800 mm diameter bulk collector sewers.


Metolong Authority


GIBB’s Responsibilities:
GIBB, as lead partner in a Joint Venture, was appointed for the construction supervision of the downstream conveyance system, which forms a portion of the overall Metolong Dam and Water Supply Programme.

The downstream conveyance system consists of a system of pipelines totalling approximately 132 km, as well as associated appurtenances and pump stations.  Storage reservoirs for conveyance of potable water to several communities of Maseru.

Tasks were split into three contracts; Contract 1 included the primary line from near the command reservoir at the water treatment works (WTW) and the Mpilo Reservoir in Maseru, and the Metolong Connector. Contract 2 included secondary lines with pump station, tanks and all appurtenances.

Contract 3 included a secondary line from the command reservoir near the WTW to the Teyateyaneng community, including tanks, pump station and appurtenances.


Botswana Water Utilities Corporation

Francistown, Botswana

GIBB’s Responsibilities:
Project management; Guideline design (FIDIC Yellow Book) of new 24 Mℓ/day; Water treatment works (SCADA monitored and remotely controlled); Procurement; Construction supervision.


Department of Water Affairs and Forestry

Mthatha, Eastern Cape, South Africa

GIBB’s Responsibilities:
Water reticulation design; Project management; Construction management.