Water Supply

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Water Supply Process

In general, water is harnessed and made available for use by means of:

• Containment in a dam or weir
• Abstraction
• Treatment and Purification
• Pumping, Conveyance and Storage in reservoirs
• Distribution and Reticulation
• Demand management, Pressure management, Loss management and Metering

Water Supply Services

 Master Planning, Investigations & Feasibility Studies

• Demographics, Planning & Future Development
• Planning Design Criteria, including Present and Projected Water Demands
• Bulk Water Sources, Security of Supply and Future Bulk Water Supply Scenarios
• Existing and Proposed Water Supply Infrastructure
• Cost Estimates and Budget Requirements

Water Abstraction

• Water abstracted must:
  • match the needs of the user, and
  • take account of the needs of the other users of that water source.

Water Treatment

• The treatment needed is a function of the quality of the water being abstracted & the use to which it will be put.

Water Supply Pipelines and Storage

• Pipeline sizing is a function of water demand, with account being taken of peak flow.
• Reservoir storage capacity is also a function of such water demand.
• Storage reservoirs hold sufficient water to permit an adequate continuous supply.

 Water Distribution and Reticulation

• Supply systems must ensure uninterrupted water in sufficient volume and at sufficient pressure.
• The entire network must be adequately sized to permit flow, at times of peak daily demand, that is sufficient in volume and pressure.

Demand-, Pressure- and Loss Management

• A well-managed system of water supply must incorporate mechanisms that minimise wastage and limit leakage.
• This enables proper monitoring and intervention, and is achieved by
  • Supply zone discretisation and Pressure zone management
  • Bulk and Consumer metering.

Selected Projects:

• Morningside Water Pipe Upgrading and Pipe Replacement
• Durban Roodepoort Deep New Water Storage Reservoir
• Benmore Gardens Water Pipe Replacement
• Rivonia Water Pipe Upgrading and Pipe Replacement
• Buccleuch Water Pipe Upgrading And Pipe Replacement
• Bryanston Reservoir Complex Inlet Chamber Renewal
• Marlboro Pressure Reduction and Sandton Valve Renewal
• Soweto Primary Water Distribution Pipelines
• Zvishavane Water Storage and Supply Scheme
• Ngezi Water Abstraction and Treatment Scheme
• Linden Reservoirs Bypasses
• Devland Water Augmentation Pipelines
• Southern MLC Water Valve Audit & Refurbishment
• Dunkeld and Illovo Reservoirs Trickle Feeds from Randjeslaagte Line
• Renco Mine Water Supply and Reticulation
• Chitungwisa Township Water Reticulation
• Southern MLC Water Asset Register
• Ormonde Exts 25, 29, 30, 32 & 35 Water Reticulation
• Thornhill Clusters Water Reticulation
• Modderfontein 34, 38, 46, 48, 50A, 71 & 74 Water Investigation
• Tsakane Ext 5 Water Reticulation
• Terenure Ext 42 Industrial Township Water Reticulation
• Sunninghill Ext 111 Water Reticulation
• Tunney Ext 10 Water Reticulation
• L17 Bulk Water Pipeline
• Witkoppen Ext 130 Water Reticulation
• Greater Ellis Park Water Infrastructure Investigation
• Reservoir Sites Investigation (North-West Johannesburg)
• Lenasia South Reservoir Complex Investigation

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