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The challenge of agricultural Water Conservation and Water Demand Management in South Africa.

IWRA World Water Congress 2008 Montpellier France
6. Water Conservation and Demand Management
Author(s): Andrew Pott
Jason Hallowes
Gerhard Backeberg
Max Döckel
L. Nieuwoudt
Mr Pott, Dr Backeberg, Prof Nieuwoudt, Prof Dockel

Keyword(s): WC & WDM, incentives, defining use entitlements, water metering, information systems, water trading

AbstractWater is currently, and will continue to be, a scarce resource in South Africa. More than 50% of South Africa’s catchments are deemed to be over-allocated. Although new augmentation options will need to be considered, such as the building of dams, the construction of inter-basin transfers and/or the construction of desalination plants, the reality of the situation is that these options are very expensive, and often environmentally unsustainable. There is an increasing recognition that better management of available water resources is required through improved Water Conservation and Water Demand Management (WC&WDM) policies, institutions and instruments. Inter-related initiatives should be adopted that will incentivise the sustainable uptake of water conservation and water demand management by water users in South Africa, after the initial round of water use licenses have been issued. The initiatives include, first, reviewing the way in which the water use licenses are defined. The paper discusses the merits of moving to a Fractional Water Allocation and Capacity Sharing (FWA-CS) water apportionment system. It is argued that this initiative will promote WC & WDM for the following reasons: The property rights are very well defined in this system, thereby enabling improved water audits to be undertaken, which are required to ensure that water users comply with their water use license conditions. The FWA-CS system enables water banking to be undertaken in large dams. Water banking provides incentives for the holders of water licenses to optimize the use of water over time, which is not the case in the currently adopted “use-it-or-lose-it” system. Secondly, water resource management systems need to be improved. The key component of such a management system is a network of abstraction meters, as well as flow gauges. A stage has been reached in the development of water resources where water metering is absolutely essential. Meters with associated information management systems are required to uphold the issuing of water use licenses. The improved management of the water resources will improve investor confidence, which is central to the adoption of WC & WDM. The installation of water meters will also enable water use charges to be levied on actual water use (or a two-part charging system), with a component being a flat rate and a component being levied on the actual use. The third yet critical mechanism through which WC & WDM is being incentivised is through trade of water use licenses in water markets. This includes the permanent sale of a water use licenses (in part or in entirely), or the temporary lease of water use license (in part or in entirety) from one water user to another. It is this process that provides the incentives for users to continually seek and adopt technologies and practices for the efficient use and transfer of water. It is shown that by reducing risk and increasing income, water use licenses are transferred from lower to higher valued uses. The key management challenge is to ensure that water licenses are impartially enforced and to reduce the transaction costs with market trades.
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