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Water 2016, 8(8), 337;

Risk Analysis Approach to Rainwater Harvesting Systems

Department ICEA, Civil Architectural and Environmental Engineering, University of Padova, via Loredan 20, Padova 35131, Italy
Academic Editor: Brigitte Helmreich
Received: 30 May 2016 / Revised: 28 July 2016 / Accepted: 29 July 2016 / Published: 8 August 2016
(This article belongs to the Special Issue Urban Drainage and Urban Stormwater Management)
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Urban rainwater reuse preserves water resources and promotes sustainable development in rapidly growing urban areas. The efficiency of a large number of urban water reuse systems, operating under different climate and demand conditions, is evaluated here on the base of a new risk analysis approach. Results obtained by probability analysis (PA) indicate that maximum efficiency in low demanding scenarios is above 0.5 and a threshold, distinguishing low from high demanding scenarios, indicates that in low demanding scenarios no significant improvement in performance may be attained by increasing the storage capacity of rainwater harvesting tanks. Threshold behaviour is displayed when tank storage capacity is designed to match both the average collected volume and the average reuse volume. The low demand limit cannot be achieved under climate and operating conditions characterized by a disproportion between harvesting and demand volume. View Full-Text
Keywords: risk analysis; efficiency; rain water harvesting risk analysis; efficiency; rain water harvesting

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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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Ursino, N. Risk Analysis Approach to Rainwater Harvesting Systems. Water 2016, 8, 337.

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