Large-scale household rainwater harvesting

supply-demand analysis of the One Million Cisterns Program

Authors

DOI:

https://doi.org/10.18830/1679-09442025v18e52784

Keywords:

Cisterns, Indicators, Semi-arid

Abstract

The assessment of the supply-demand relationship in domestic rainwater harvesting systems has been much discussed. In particular, large-scale implementation programs would benefit from the availability of demand-supply indicators for the standard systems they implement. Such indicators should be simple, and, thus, of straightforward implementation, yet sufficiently informative to express the supply-demand relationship beyond the water balance. Hence, the aim of this work is to propose new indicators suitable for large-scale programs. Four indicators are evaluated: reliability, efficiency, resilience and surplus. The 1 Million Cisterns Program (P1MC) in Paraíba is taken as a case for the application and evaluation of the indicators. The standard P1MC systems were numerically simulated, taking precipitation series for the 194 municipalities where the cisterns were implemented in Paraíba. The results show that reliability and efficiency, for these systems, have equivalent values, making it possible, without loss of information, to use only reliability.

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Author Biographies

Gabriela da Luz Lins, Universidade Federal de Campina Grande; Centro de Tecnologia e Recursos Naturais; Programa de Pós-Graduação em Engenharia Civil e Ambiental

Graduated in Civil Engineering from the Federal University of Campina Grande (2021). Currently, she is a Master's student in the Graduate Program in Civil and Environmental Engineering at the Federal University of Campina Grande. She has experience in Civil Engineering, with an emphasis on Water Resources, working mainly on the following topics: semi-arid regions, performance assessment of rural cisterns, groundwater recharge, and alluvial aquifers

Carlos de Oliveira Galvão, Universidade Federal de Campina Grande; Centro de Tecnologia e Recursos Naturais; Programa de Pós-Graduação em Engenharia Civil e Ambiental

Professor at the Graduate Program in Civil and Environmental Engineering at the Federal University of Campina Grande, Bachelor and MSc in Civil Engineering, DSc in Water Resources and Environmental Sanitation.

Rodolfo Luiz Bezerra Nóbrega, University of Bristol; Science and Engineering; School of Geographical Sciences

Holds a degree in Civil Engineering and a master's in Civil and Environmental Engineering from UFCG, as well as a Ph.D. in Mathematics and Natural Sciences from the University of Göttingen, Germany. Has experience in Water Resources, Hydrology, Soil Science, Hydrological and Environmental Modeling, Remote Sensing, and Sanitary Engineering. Currently employed as a professor at the University of Bristol and serves as a visiting researcher at the University of Reading, both institutions in England.

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Published

2025-03-07

How to Cite

Lins, G. da L., Galvão, C. de O., & Bezerra Nóbrega, R. L. (2025). Large-scale household rainwater harvesting: supply-demand analysis of the One Million Cisterns Program. Paranoá, 18, e52784. https://doi.org/10.18830/1679-09442025v18e52784

Issue

Vol. 18 (2025): January/December Edition

Section

Technology, Environment and Sustainability

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