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Influence of Catchment Surface Material on Quality of Harvested Rainwater

Author

Listed:
  • Felipe Barriga

    (Water Research Center for Agriculture and Mining (CRHIAM), ANID Fondap, Victoria 1295, Concepcion 4070411, Chile
    Engineering and Environmental Biotechnology Group (GIBA-UDEC), Environmental Sciences Faculty, Universidad de Concepción, Concepcion 4070409, Chile)

  • Gloria Gómez

    (Water Research Center for Agriculture and Mining (CRHIAM), ANID Fondap, Victoria 1295, Concepcion 4070411, Chile
    Engineering and Environmental Biotechnology Group (GIBA-UDEC), Environmental Sciences Faculty, Universidad de Concepción, Concepcion 4070409, Chile)

  • M. Cristina Diez

    (Water Research Center for Agriculture and Mining (CRHIAM), ANID Fondap, Victoria 1295, Concepcion 4070411, Chile
    Department of Chemical Engineering, Faculty of Engineering and Sciences, Universidad de La Frontera, Av. Francisco Salazar 01145, Casilla 54-D, Temuco 4811230, Chile)

  • Leonardo Fernandez

    (Water Harvest Company Gomez y Fernández SPA, Avenida Pedro Aguirre Cerda N° 543, Casa 2, San Pedro de la Paz 4130107, Chile)

  • Gladys Vidal

    (Water Research Center for Agriculture and Mining (CRHIAM), ANID Fondap, Victoria 1295, Concepcion 4070411, Chile
    Engineering and Environmental Biotechnology Group (GIBA-UDEC), Environmental Sciences Faculty, Universidad de Concepción, Concepcion 4070409, Chile)

Abstract

Rainwater harvesting (RWH) systems offer an opportunity to diversify the water matrix under drought scenario. However, there is not a robust institutional framework for managing this new source of water. The objective of this study was to evaluate the influence of the catchment surface material on the quality of rainwater collected. Three systems were installed in south-central Chile, which collected rainwater from three different surfaces: gravel tile, zinc-polycarbonate sheets, and clay tiles. The RWH system consists of a first flush diverter and then a storage system with chlorination. The rainwater was characterized by its physicochemical and microbiological properties for its possible final use, considering the current regulations for drinking water and agricultural irrigation. The results indicate that the raw rainwater harvested from different surfaces presented a high mean conductivity of 232 ± 146 µS/cm. Meanwhile, fecal coliform values were <1 MPN/100 mL, which indicates good microbiological quality. Regarding the quality for use as drinking water, it was found that of 39 parameters evaluated according to a reference standard, only the pH was above the indicated limit. Meanwhile, the harvested water presents satisfactory quality for irrigation, except for its sodium (35–50% above the standard) and pesticide values (with respect to 0.028 µg Delta-BHC/L at Site 2).

Suggested Citation

  • Felipe Barriga & Gloria Gómez & M. Cristina Diez & Leonardo Fernandez & Gladys Vidal, 2024. "Influence of Catchment Surface Material on Quality of Harvested Rainwater," Sustainability, MDPI, vol. 16(15), pages 1-13, August.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:15:p:6586-:d:1447839
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    References listed on IDEAS

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    1. Karim, Md. Rezaul & Bashar, Mohammad Zobair Ibne & Imteaz, Monzur Alam, 2015. "Reliability and economic analysis of urban rainwater harvesting in a megacity in Bangladesh," Resources, Conservation & Recycling, Elsevier, vol. 104(PA), pages 61-67.
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