Seasonal evaluation of surface water quality at the Tamanduá stream watershed (Aparecida de Goiânia, Goiás, Brazil) using the Water Quality Index

Débora Pereira Da Silva,Hebert Oliveira Santos,Douglas Pereira Da Silva Pitaluga,Paulo Sérgio Scalize

doi:10.1515/eng-2019-0010

Débora Pereira Da Silva, Hebert Oliveira Santos + Show 2 more

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https://doi.org/10.1515/eng-2019-0010

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Abstract

Abstract Freshwater is an essential natural resource for humanity, however, its quality has been compromised as a result of natural and anthropogenic interference. The objective of the present study was to determine the Bascarán Water Quality Index (WQIB ) for the Tamanduá stream in the municipality of Aparecida de Goiânia, Goiás, Brazil, and relate it to the limits established by CONAMA resolutions nº 357 [1] and nº 274 [2], for Class 2 freshwater bodies. The study was carried out at three sampling points proximate to urban parks, with samples collected in both the dry and the rainy seasons with the measurement of flow. The physical, chemical and biological parameters were analyzed as recommended in Standard Methods [3]. Parametric descriptive statistics were used for data analysis. The WQIB results classified the water as acceptable (24%), normal (48%), improper (20%) and unpleasant (8%), with turbidity, DO and total coliforms responsible for decreased WQIB in the rainy season. The parameters pH, apparent color and DO do not conform with CONAMA resolution nº 357 [1] while water resources for bathing were classified as excellent according to CONAMA resolution nº 274 [2].

Highlights

Seasonal evaluation of surface water quality at the Tamanduá stream watershed high turbidity values and Mena-Riviera et al (2017) [13]
The hydrographic basin of the Tamanduá stream is located in the metropolitan region of the municipality of Aparecida de Goiânia in the state of Goiás, Brazil
The stream has an extension of 11.3 km, with its main source located in Parque Ecológico Municipal Tamanduá and its mouth in the Santo Antônio stream

Summary

Introduction

Seasonal evaluation of surface water quality at the Tamanduá stream watershed high turbidity values and Mena-Riviera et al (2017) [13]. Burío River in Costa Rica, which is characterized by urban and rural tropical areas. In the context of the present study, the hydrographic basin of the Tamanduá stream is considered highly relevant to the region due to the presence of urban public parks within its extension. Park) and Parque da Criança (Children’s Park) stand out due to the use of water for irrigation of vegetables [14]. There are environmental impacts in the region, with the main ones being contamination by domestic and industrial effluents, erosion and silting of the watercourse, deforestation and high concentrations of dust and atmospheric gasses [15]

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