Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Water Quality Assessment of Keenjhar Lake, Thatta

Version 1 : Received: 29 July 2020 / Approved: 30 July 2020 / Online: 30 July 2020 (12:24:53 CEST)

How to cite: Nizamani, M.A. Water Quality Assessment of Keenjhar Lake, Thatta. Preprints 2020, 2020070722. Nizamani, M.A. Water Quality Assessment of Keenjhar Lake, Thatta. Preprints 2020, 2020070722.


Keenjhar Lake is the main source of drinking water for the metropolitan city of Karachi. The release of untreated wastewater from Kotri industrial area and other sources have made the lake water polluted. This study was subjected to determine the impacts of such pollutant sources on the water quality of Keenjhar Lake. The study involves the analysis of water quality parameters of Keenjhar Lake and its Feeding source (KB Feeder). The sampling sites were selected based on the sources of contamination. The water samples are tested for physical, chemical and microbiological parameters. The result of water analysis indicates the contamination level of the lake is quite alarming for the sites of Kotri effluent and WAPDA colony where Total Dissolved Solids (TDS), Chloride and other ionic metals were quite higher in concentration than other sites. These sites are also contaminated with Fluoride and Arsenic which are carcinogenic elements. The study reveals that the contamination level of feeding source is causing big non-reversible damage to the lake if continued to be uncontrolled. This contamination is mainly due to the release of toxic metals and ions in the KB feeder caused by human carelessness.


Pollution; water quality; Keenjhar lake; environmental impacts; Physico-chemical parameters


Engineering, Civil Engineering

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