Category: Advisory packages, guidelines, and tools

Water Loss Management Summary Sheets: 3. Sectorising and Step Testing

Sectorising is the process of splitting a large water reticulation system into smaller zones which can be individually monitored to help in the identification of water losses and other water related problems. The process of sectorising is well known as a critical element of any water loss reduction programme and has long been regarded as the starting point of any comprehensive water demand management strategy.

Water Loss Management Summary Sheets: 2. Pressure Management

While managing water pressures in a supply area is not simple and there are a great many issues to consider, the common factor in every system is the fact that leakage is driven by pressure and if the pressure is increased, the leakage will also increase. If the water pressure in a system can be reduced, even for a short period during times of low demand, the water leakage from the system will be reduced. Pressure has been recognised as the single most important issue to be considered when trying to reduce leakage from a water reticulation system.

Performance-Based Contracting for Non-Revenue Water and its Relevance in the South African Context

Performance-Based Contracting (PBC) offers strong potential to address the rampant NRW in South African municipalities. However, there are reasons why Performance-Based Contracts (PBCs) have not been adopted at scale, which largely relate to municipal technical capacity and the complex and difficult context in which municipalities operate.

Towards co-operative governance in the development and implementation of cross-sectoral policy: Water policy as an example

Water policy is cross-sectoral, directly and indirectly affecting and affected by almost all other sectoral policies such as agriculture, urban development, rural development, health, housing, economic development. Effective implementation of any cross-sectoral policy requires that co-operative governance processes have to be established on the ground, and not just considered as some form of laudable principle.

Reducing water losses in Municipalities: Key issues and pointers to implementation

Saving water and water demand management (WDM) in general can be quite confusing to a municipality wishing to embark on some form of water loss reduction activities. A lot of work has taken place in South African and internationally to support water loss reduction in order to save money.

The use of small-scale equipment for evaluating water treatment plants

Water treatment involves the complex interaction of processes such as mixing, coagulation, flocculation, sedimentation, clarification and disinfection. Tools have been developed to simulate the full-scale water treatment plants in order to optimise and monitor the processes in terms of the chemical dosages and physical parameters.