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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Water and Sanitation