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Water 2012, 4(3), 607-628; doi:10.3390/w4030607

Potable Water Savings by Using Rainwater for Non-Potable Uses in Houses

Laboratory of Energy Efficiency in Buildings, Department of Civil Engineering, Federal University of Santa Catarina, Florianópolis-SC 88040-900, Brazil
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Received: 9 July 2012 / Revised: 14 August 2012 / Accepted: 17 August 2012 / Published: 29 August 2012
(This article belongs to the Special Issue Sustainable Water Systems)

Abstract

The objective of this study is to assess the potential for potable water savings by using rainwater as well as the sizing of rainwater tanks in houses in some cities in the world. Daily rainfall data for thirteen cities located in different countries were used. Different catchment areas, number of residents, potable and rainwater demands were considered in order to assess their impact on the potential for potable water savings and sizing of rainwater tanks. The analysis was performed using the Netuno computer program. The results showed that the greatest potential for potable water savings is obtained in cities where there is constant rainfall, which does not always mean high annual average rainfall. Cities with well-defined periods of drought require larger tank capacities. Overall, it was observed that all parameters (catchment area, number of residents, potable and rainwater demands, and rainfall) influence the sizing of the tank for rainwater storage. View Full-Text
Keywords: potable water savings; rainwater tank sizing; houses; computer simulations potable water savings; rainwater tank sizing; houses; computer simulations
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Souza, E.L.; Ghisi, E. Potable Water Savings by Using Rainwater for Non-Potable Uses in Houses. Water 2012, 4, 607-628.

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