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Evaluation of Microbial Quality of the Surface Water of Hatirjheel in Dhaka City

Md. Badsha Miah
Department of Environmental Science, Stamford University Bangladesh, 744, Satmasjid Road, Dhaka 1209, Bangladesh

Ahmad Kamruzzaman Majumder*
Department of Environmental Science, Stamford University Bangladesh, 744, Satmasjid Road, Dhaka 1209, Bangladesh

Gulshan Ara Latifa
Department of Environmental Science, Stamford University Bangladesh, 744, Satmasjid Road, Dhaka 1209, Bangladesh

Abstract/ Executive Summary:

Microbiological health risks due to environmental pollution are major concerning issue in all over the world. In Bangladesh, almost all the major water bodies (lake/khal) particularly in the urban or semiurban area have been suffering severely pollutions. Therefore if we manage to safe our surface water in and around the city, we can reduce the demand of ground water for the city dwellers by the proper use of these lakes and ponds. This study was conducted to evaluate the microbial condition of Hatirjheel water located in Dhaka City. The microbial analysis was performed to trace the presence of bacterial and other pathogens. In 5 samples, total viable bacteria and fungi were found up to 2.0×106 cfu/ml and 3.4×102 cfu/ml, respectively. Specific pathogens such as Klebsiella spp. (3.0×102 cfu/ml), Salmonella spp. (2.0×102 cfu/ml), Pseudomonas spp. (8.3×102 cfu/ml) and Vibrio spp. (6.0×102 cfu/ml.) were also isolated. The findings of the study revealed that the water of Hatirjheel might not safe for human health and also indicated that this water may vulnerable for diarrhea, dysentery, typhoid fever, shigellosis, salmonellosis, parasitic worm infection, hemolytic uremina syndrome etc. water-borne diseases. The poor water quality suggesting contamination of the lake water by domestic and industrial wastes and other anthropogenic activities. So it is important to control the pollution for proper use of this water in various household purposes.

Keywords: Water quality; Microorganisms; Pollution; Lake, Health impact

Location: Hatirjheel in Dhaka City

Start Date:

End Date:

Program Area: Knowledge Management

Commodity: Microbiological aspect, Water quality

Objectives:

Since water pollution is the common scenario, its effect on the environment must be studied thoroughly and regularly. Therefore, the present study was undertaken to evaluate the microbial quality of water, of Hatirjheel.

Methodology:

Study Area and collection of Sample. The study area chosen for the current investigation was Hatirjheel of Dhaka city and a total of 5 surface water samples were collected aseptically in pre-sterilized screw caped bottles. Bottles were marked properly and transported to the laboratory as early as possible for microbiological analysis. Serial dilution of water samples were made in sterile normal saline up to 10-5.

Isolation and enumeration of total viable bacteria and fungi. 0.1 ml of each sample from 10-3 and 10-5 dilutions was dispensed in to the Petri plates with sterile nutrient agar medium. Plates were incubated at 37°C for 24 hours. Similarly, sample from dilution 10-2 was inoculated on to Sabouraud Dextrose Agar (SDA) medium and the plates were incubated at 25°C for 48 hours.

Isolation and enumeration of pathaogenic bacteria. For the isolation of E. coli, Klebsiella spp. and Pseudomonas spp. an aliquot of 0.1 ml of each sample from dilution 10-2 was inoculated onto MacConkey agar and cetrimide agar medium, respectively. The plates were allowed to incubate for 24 hours at 37°C. TCBS (Thiosulfate-citrate-bile salts-sucrose) agar and Salmonella-Shigella agar medium were used for the isolation of Vibrio spp., Salmonella spp. and Shigella spp., respectively.

Source of Information: Stamford Journal of Microbiology, 2016. Vol. 6, Issue 1, 30-33 ISSN: 2074-5346 (Print); 2408-8846 (Online)

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Microbial study revealed that the microbial quality of different location of Hatirjheel was diverse. The microbial analysis was performed to trace the presence of organisms and pathogens such as E .coli, Salmonella spp., Shigella spp., Klebsiella spp. and Vibrio spp. Presence of pathogenic bacteria in water indicates that water is not safe for household purposes and might vulnerable for causation and spread of different waterborne diseases. The findings of the current study suggest that the purpose of the Hatirjheel project will not be fully gained until the water pollution from different sources is controlled. So, it is need to take necessary steps to stop the pollution of water and increase the quality of water such as setup effluent treatment plants (ETP) at the sewage and waste water discharging points. Regular monitoring is needed to get the desired water quality, continuing the sound water . quality and to restore and maintain the physical, chemical and biological integrity of water bodies to achieve the required water quality, which ensure protection and propagation of fish, wildlife, plants and also recreation in and on water.

Knowledge Management: Journal