scholarly journals Sustainable development indicators for urban water systems: a case study evaluation of King William's Town, South Africa, and the applied indicators

Water SA ◽  
2004 ◽  
Vol 27 (2) ◽  
Author(s):  
G Morrison ◽  
OS Fatoki ◽  
E Zinn ◽  
D Jacobsson
Water Policy ◽  
2009 ◽  
Vol 11 (2) ◽  
pp. 250-268 ◽  
Author(s):  
Ulrika Palme ◽  
Anne-Marie Tillman

Sustainable development indicators (SDIs) are frequently recommended as tools for supporting sustainable development. The scientific community has made numerous suggestions regarding SDIs for urban water systems, but few studies have examined what information other actors consider important. This paper examines, based on literature and field studies of Swedish water organizations, what sets of SDIs are considered important, in terms of information content by researchers, sector associations and practitioners. Furthermore, the paper investigates how preferred SDI content relates to these actors' conceptions of sustainable development (SD) and what happens when sender and receiver disagree on what information should be captured in SDIs and exchanged. The results indicate that what SDI content is considered important reflects the conception of SD. Different conceptions of SD and the consequent differences in preferred SDIs contribute to a mismatch between the information that senders want to convey to receivers and the information the latter actually want. In such instances it was the receivers who determined what information was, in fact, exchanged. A prerequisite for meaningful application of SDIs in the Swedish water sector is to identify processes that can contribute to an increased pull for sustainability information, particularly so among its decision makers.


2015 ◽  
Vol 15 (6) ◽  
pp. 1343-1352 ◽  
Author(s):  
Seith N. Mugume ◽  
Kegong Diao ◽  
Maryam Astaraie-Imani ◽  
Guangtao Fu ◽  
Raziyeh Farmani ◽  
...  

In future cities, urban water systems (UWSs) should be designed not only for safe provision of services but should also be resilient to emerging or unexpected threats that lead to catastrophic system failure impacts and consequences. Resilience can potentially be built into UWSs by implementing a range of strategies, for example by embedding redundancy and flexibility in system design, or by rehabilitation to increase their ability to maintain acceptable customer service levels during unexpected system failures. In this work, a new resilience analysis is carried out to investigate the performance of a water distribution system (WDS) and an urban drainage system (UDS) during pipe failure scenarios. Using simplified synthetic networks, the effect of implementing adaptation (resilient design) strategies on minimising the loss of system functionality and cost of UWSs is investigated. Study results for the WDS case study show that the design strategy in which flexibility is enhanced ensures that all customers are served during single pipe failure scenarios. The results of the UDS case study indicate that the design strategy incorporating upstream distributed storage tanks minimises flood volume and mean duration of nodal flooding by 50.1% and 46.7%, respectively, even when system functionality is significantly degraded. When costs associated with failure are considered, resilient design strategies could prove to be more cost-effective over the design life of UWSs.


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