A Regional Cost-Benefit Analysis of Rainwater Harvesting: Sustainable Economics to Justify Green Technologies

Ishida, Cari; Grantham, Robert; Stober, T.; Willobee, M.; Quigley, Michael William; Reidy, Philip C.

doi:10.2175/193864711802837390

Cited by 5 publications

(2 citation statements)

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“…Roebuck et al [59], however, found that RWH systems in the UK are not likely to present any payback period and concluded that any research that finds they can should be thoroughly examined. It appears that the majority of researchers have found that RWH systems are not financially viable [19,52,57,[59][60][61]. Conflicting results may be affected by a number of financial assumptions and modeling parameters, as discussed later.…”

Section: Life Cycle Cost Analysismentioning

confidence: 98%

“…They concluded that water conservation measures are superior to desalination and are therefore a key strategy. Ishida et al [61] recognized the potential benefit of RWH systems in stormwater management and combined sewer overflow control. Gwenzi et al [83] found that urban RWH systems reduced downstream peak and total discharge, baseflow, and flow velocity.…”

Section: Benefitsmentioning

confidence: 99%

See 1 more Smart Citation

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

Amos

Rahman

Gathenya

2016

Water

113

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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.

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