Seasonal evaluation of surface water quality at the Tamanduá stream watershed (Aparecida de Goiânia, Goiás, Brazil) using the Water Quality Index
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Data
2019
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Resumo
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].
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Bathing, Water resources, Water Quality Index
Citação
SILVA, Débora Pereira da; PITALUGA, Douglas Pereira da Silva, SCALIZE, Paulo Sérgio; SANTOS, Hebert Oliveira. Seasonal evaluation of surface water quality at the Tamanduá stream watershed (Aparecida de Goiânia, Goiás, Brazil) using the Water Quality Index. Open Engineering, [s. l.], v. 9, n. 1, p. 90–98, 2019. DOI: 10.1515/eng-2019-0010. Disponível em: https://www.degruyter.com/document/doi/10.1515/eng-2019-0010/html?srsltid=AfmBOort8eKeBfE2y71-cxBifjCor_VrNtFoFih-XVbE4YtY5GSVYiCV. Acesso em: 30 jan. 2025.