Authors :
Muhammad Rezaul RAKIB 1*, Marzia AKTHER 1, Md Anarul Haque MONDOL 1, Md. Shiblur RAHAMAN 2
1 Department of Geography and Environment, Jahangirnagar University, Savar, Dhaka-1342, Bangladesh
2 Department of Environmental Science and Disaster Management, Noakhali Science and Technology University, Noakhali-3814, Bangladesh
E-mail  : * Corresponding author: mrrakib@juniv.edu (M.R.R.); shiblu@nstu.edu.bd (S.R.)
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Abstract
Due to an increase in unplanned and excessive growth of urbanization and industrialization, lake water utilization and quality deterioration has resulted in severe environmental degradation. Lakes are important ecosystems because of the variety of uses for their water, including industrial, recreational, agricultural, and water retention. Hatirjheel Lake has turned into one of the favourite recreational destinations in Dhaka, Bangladesh and due to this reason, the water quality has deteriorated; therefore, it is necessary to monitor the water quality regularly. The purpose of this paper is to assess the water quality of Hatirjheel Lake to find out its present state. Water samples were collected from five different sampling points based on sources of pollution by the purposive sampling method. The water sample has been analyzed for various physiochemical parameters, including Colour, Odour, Temperature, pH, Dissolved Oxygen (DO), Electrical Conductivity (EC), Total Dissolved Solid (TDS), and Total Suspended Solid (TSS) and also calculated the correlation between parameters. From the overall analysis, it is evident that six types of colour and strong odour were found and water temperature varied from 30°C to 31°C, pH varied from 6.35 to 7.16, DO varied from 2.80 to 4.42 mg/L, EC from 0.6 to 0.7 dS/m, TDS varied from 577 to 680 mg/L, and TSS varied from 2.41 to 5.61 mg/L. Moreover, interpreting the findings in the context of comparison with previous studies, the results collectively suggest a decline in water quality, highlighting the need for immediate attention and intervention. Therefore, wide public awareness, government participation, and government regulations must be adopted to save the quality of water in Hatirjheel Lake.
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