Impacts of the Urbanization Process on Water Quality of Brazilian Savanna Rivers: The Case of Preto River in Formosa, Goiás State, Brazil

Nayara Luiz Pires, Daphne Heloisa de Freitas Muniz, Tiago Borges Kisaka, Nathan De Castro Soares Simplicio, Lilian Bortoluzzi, Jorge Enoch Furquim Werneck Lima and Eduardo Cyrino Oliveira-Filho
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Nayara Luiz Pires: Programa de Pós-Graduação em Meio Ambiental e Desenvolvimento Rural (PPG-MADER), da Faculdade UnB Planaltina (FUP), Universidade de Brasília, CEP, 73300000, Planaltina, DF, Brazil
Daphne Heloisa de Freitas Muniz: Programa de Pós-Graduação em Meio Ambiental e Desenvolvimento Rural (PPG-MADER), da Faculdade UnB Planaltina (FUP), Universidade de Brasília, CEP, 73300000, Planaltina, DF, Brazil
Tiago Borges Kisaka: Programa de Pós-Graduação em Meio Ambiental e Desenvolvimento Rural (PPG-MADER), da Faculdade UnB Planaltina (FUP), Universidade de Brasília, CEP, 73300000, Planaltina, DF, Brazil
Nathan De Castro Soares Simplicio: Programa de Pós-Graduação em Meio Ambiental e Desenvolvimento Rural (PPG-MADER), da Faculdade UnB Planaltina (FUP), Universidade de Brasília, CEP, 73300000, Planaltina, DF, Brazil
Lilian Bortoluzzi: Department of Education, Universidade Estadual de Goiás—UEG, CEP 73807250, Formosa, GO, Brazil
Jorge Enoch Furquim Werneck Lima: Laboratório de Ecotoxicologia, Embrapa Cerrados, CEP 73310-970, Planaltina, DF, Brazil
Eduardo Cyrino Oliveira-Filho: Programa de Pós-Graduação em Meio Ambiental e Desenvolvimento Rural (PPG-MADER), da Faculdade UnB Planaltina (FUP), Universidade de Brasília, CEP, 73300000, Planaltina, DF, Brazil

IJERPH, 2015, vol. 12, issue 9, 1-16

Abstract: The release of domestic sewage in water resources is a practical feature of the urbanization process, and this action causes changes that may impair the environmental balance and the water quality for several uses. The aim of this study was to evaluate the influence of urbanization on the surface water quality of the Preto River throughout the town of Formosa, Goiás, Brazil. Samples were collected at five points along the river, spatially distributed from one side to the other of the town of Formosa, from May to October of 2012. Data were subjected to descriptive statistics, as well as variance and cluster analysis. Point P2, the first point after the city, showed the worst water quality indicators, mainly with respect to the total and fecal coliform parameters, as well as nitrate concentrations. These results may be related to the fact that this point is located on the outskirts of the town, an area under urbanization and with problems of sanitation, including absence of sewage collection and treatment. The data observed in this monitoring present a public health concern because the water body is used for bathing, mainly in parts of Feia Lagoon. The excess of nutrients is a strong indicator of water eutrophication and should alert decision-makers to the need for preservation policies.

Keywords: urban sewerage; water sources; water contamination; macrophytes (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2015
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