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Water 2016, 8(4), 149; doi:10.3390/w8040149

Economic Analysis and Feasibility of Rainwater Harvesting Systems in Urban and Peri-Urban Environments: A Review of the Global Situation with a Special Focus on Australia and Kenya

1
School of Computing, Engineering and Mathematics, Western Sydney University, Sydney 2751, Australia
2
Building XB, Room 2.48, Kingswood, Penrith Campus, Locked Bag 1797, Penrith, 2751 NSW, Australia
3
Soil, Water and Environmental Engineering Department, School of Biosystems and Environmental Engineering, Jomo Kenyatta University of Agriculture & Technology, Nairobi 00200, Kenya
*
Author to whom correspondence should be addressed.
Academic Editor: Athanasios Loukas
Received: 19 January 2016 / Revised: 15 March 2016 / Accepted: 28 March 2016 / Published: 14 April 2016
View Full-Text   |   Download PDF [270 KB, uploaded 14 April 2016]

Abstract

Rainwater harvesting (RWH) plays an important role in increasing water security for individuals and governments. The demand for tools to enable technical and economic analysis of RWH systems has led to a substantial body of research in the recent past. This paper focuses on the economic aspects of domestic RWH in urban and peri-urban environments. In this regard, key issues are identified and discussed including quality and quantity of harvested water, the water demand profile, the scale of installation, interest rates, the period of analysis, real estate value, and the water-energy-food nexus. Kenya and Australia are used as reference points having different economies and opposing RWH policies. It has been found that the previous studies on financial aspects of RWH systems often had conflicting results. Most of the economic analyses have ignored the full benefits that a RWH system can offer. In view of the varying and conflicting results, there is a need to standardize the methods of economic analysis of RWH systems. View Full-Text
Keywords: rainwater tank; rainwater harvesting; economic analysis; urban; peri-urban; Kenya; Australia rainwater tank; rainwater harvesting; economic analysis; urban; peri-urban; Kenya; Australia
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Christian Amos, C.; Rahman, A.; Mwangi Gathenya, J. Economic Analysis and Feasibility of Rainwater Harvesting Systems in Urban and Peri-Urban Environments: A Review of the Global Situation with a Special Focus on Australia and Kenya. Water 2016, 8, 149.

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