Quality of meteoric water in the city of Itajubá, Minas Gerais, Brazil

  • Herlane Costa Calheiros Universidade Federal de Itajubá (UNIFEI)
  • Mônica Regina Gomes Universidade Federal de Itajubá (UNIFEI)
  • Percy Máximo Anco Estrella PROWIL
Keywords: water availability, rainwater, pluvial water harvesting, acid rain, air pollution


The objective of this study was to assess the quality of rainwater in the city of Itajubá, MG. Therefore, samples were collected in order to analyze rainwater quality after the water had drained through three materials: asbestos, zinc and ceramic. Direct sampling was also performed in order to compare results and to verify changes in rainwater quality. It was observed that the quality of rainwater varies with the material through which it flows, changing parameters such as pH, hardness, alkalinity, turbidity and coliform concentration. Therefore, the surface material in rainwater collection systems can modify water quality and thus affect the final suitable uses of this water. Although the meteoric waters of Itajubá had a low degree of contamination, it was concluded that the treatment of these waters must include the removal of solids, pH adjustment and disinfection, which will render them an advantageous, sustainable and affordable alternative for use in times of shortage water.

Author Biographies

Herlane Costa Calheiros, Universidade Federal de Itajubá (UNIFEI)
Coordinadora del Grupo de Estudios en Saneamento – GES / UNIFEI Profesora de la Universidad Federal de Itajubá - UNIFEI Instituto de Recursos Naturales – IRN Av. BPS, 1303 – Pinheirinho. CEP 37500-903. Itajubá – MG – Brasil. Tel.: (35) 3629.1265/1460 - Fax.: (35) 3629.1265
Mônica Regina Gomes, Universidade Federal de Itajubá (UNIFEI)
Ingeniero Hídrico – UNIFEI Universidad Federal de Itajubá - UNIFEI Av. BPS, 1303 – Pinheirinho. CEP 37500-903. Itajubá – MG – Brasil.
Percy Máximo Anco Estrella, PROWIL
Master en Mineria y Medio Ambiente – UNI Universidad Nacional de Ingeníeria - UNI (Lima, Perú) Consultor de la empresa PROWIL Av. Antônio Corrêa Cardoso, 101 - Varginha. CEP 37501-064. Itajubá - MG - Brasil.