Type | Thesis or Dissertation - Bachelor |
Title | A system dynamics model for deepening the understanding of Greater Kirkwood’s water supply system, South Africa |
Author(s) | |
Publication (Day/Month/Year) | 2013 |
URL | http://repository.tudelft.nl/assets/uuid:6642f0c8-17f4-4675-9790-f593213292a5/dHont_SRVM_Modeling_document_BSc_1.pdf |
Abstract | The provision of water and sanitation services to citizens living within the municipal boundaries is a struggle for the Sundays River Valley Municipality (SRVM), South Africa. In this municipality, the interrupted operation of the water distribution system has led to perceptions of systemic social injustice that are rooted in the apartheid on the part of citizens. The municipality as local government is responsible for supplying safe, potable water to the citizens. The Water User Association (WUA) is responsible for delivering untreated water to the municipality. Overall, misconceptions and lack of a common understanding of the system complexity limit the cooperation between the stakeholders. The choice to focus on modeling Greater Kirkwood is based on the opinions of both SRVM and WUA, who both experienced problems with this supply system. The Sundays River Valley community experiences social injustice, which is mainly due to unequal water supply to the different community zones. As it appears, Kirkwood Town (zone 1) is the first to receive water from their taps, and the last to run out of water. Lack of a common understanding of the system complexity leads to contention between stakeholders and limits the cooperation between them. The problem statement that describes the context of this situation is defined as: Management and operation of the water distribution system of Greater Kirkwood, Sundays River Valley Municipality, South Africa, comes with little understanding of the behavioral, institutional and socio-technical complexity of the water supply system by public stakeholders. There is need for an approach to start strategic conversations concerning water supply between stakeholders in this part of rural South Africa. A system dynamics model is suitable for this objective. The simulation model is made at the request of Jai Clifford-Holmes, a student at the Institute for Water Research, Rhodes University, South Africa. Among other reasons, the system dynamics approach is chosen because these models do not necessarily need detailed numerical data to describe system behavior. The knowledge on the water supply system of Greater Kirkwood is limited, and available information is ambiguous and contradictory. Therefore the modeling objective of this project is defined as: To deepen the understanding of the performance of Greater Kirkwood’s water supply system. In addition to this modeling objective, four outcomes of interest from the model are defined to bring focus to the modeling construction process. (a) What is the maximum capacity of the water supply system? (b) What are the limiting factors in the water supply system? (c) Can supply disruptions be reduced? If so, how? (d) How is system performance affected by operational management? These questions have been answered during the modeling process. During the model construction process and as these questions were answered, three key dilemma’s in management and operation of the water distribution in this part of rural South Africa have surfaced. These key dilemma’s correspond largely to the outcomes of interest that were described before. I propose to use these dilemma’s as input for strategic stakeholder conversations, as these reflect the main conflicts within the operation of the water supply system. |
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