Impact of Untreated Liquid Waste Disposal on Water Quality in a Tropical Region | Chapter 4

The discharge of untreated liquid waste into the River Atta-dea makes its assessment of water quality indicators necessary with its associated human health implications and ecological management. Our study was therefore carried out to investigate the influence of untreated liquid waste on the physicochemical and microbiological parameters of the Atta-dea stream under different seasons in the Brong Ahafo Region of Ghana. Water samples were collected from the untreated liquid waste water, and the stream water at three different locations namely: top-stream, mid-stream, and down-stream. Water quality indicators were determined at the laboratory to assess the concentrations of parameters such
as pH, turbidity, total suspended solids, total dissolved solids, dissolved oxygen, total coliform and Escherichia coli. Our results revealed significantly (p < 0.05) high level of pollution of physicochemical properties and microbiological parameters at the midstream, downstream and waste water sampling locations. The midstream and downstream that had direct influence with the waste water generally recorded higher mean levels of total coliform (730 ± 1.41 and 740 ± 2.82), E. coli (38 ± 1.41 and 25 ± 2.82), TSS (109 ± 2.82 and 43 ± 0) respectively and lower level of DO at the midstream (4 ± 0) in the rainy season than Upstream (control) which were generally within the Environmental Protection Agency water quality standard. This however, implies that the discharge of untreated domestic liquid waste into the Atta-dea stream has a significant impact on its water quality and this impact was
recognized across both seasons (rainy and dry), with rainy season experiencing significantly(p < 0.05) high level of surface water pollution than the dry season.

Author(s) Details

Alex Amerh Agbeshie
Department of Environmental Management, University of Energy and Natural Resources, Sunyani, Bono Region, Ghana.

Mr. Isaac Adjei
Department of Environmental Science and Design, Huzhou University, Zhejiang Province, PR China.

Rita Adjei
Department of Planning and Sustainability, University of Energy and Natural Resources, Sunyani, Ghana.

Albert Banunle
Department of Environmental Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.

Samuel Novor
Department of Horticulture and Crop Science, University of Energy and Natural Resources, Sunyani, Ghana.

Abdul Aziz Khalid
Department of Horticulture and Crop Science, University of Energy and Natural Resources, Sunyani, Ghana.

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