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Quality Assessment of Surface Water Resources of Dumki Upazila in Bangladesh for Irrigation, Aquaculture and Livestock Consumption

M.N. Uddin
Department of Agricultural Chemistry, Patuakhali Science and Technology University, Dumki, Patuakhali

I.M. Shariful
Department of Agricultural Chemistry, Patuakhali Science and Technology University, Dumki, Patuakhali

M.S. Islam
Department of Biochemistry, Patuakhali Science and Technology University, Dumki, Patuakhali

Abstract/ Executive Summary:

A study was conducted to determine the quality of surface water resources of Dumki Upazila in Bangladesh. Eighteen samples were collected from the different locations during April to May 2010. Chemical analyses of different parameters were done to assess the quality of water sources. All the waters were acidic in nature, 10 samples were found “unsuitable" for aquaculture and irrigation due to pH <6.5. Electrical conductivity (EC) categorized 7 samples as "excellent" and 11 as "good" class for irrigation. Salinity and alkalinity hazard rated the 6 samples “low salinity" and "low alkalinity" (C1S1); and 12 samples as "medium salinity" and "low alkalinity"(C2S1) group for irrigation. Total dissolved solids of the sample were “fresh water" for irrigation and most of the sample suitable for aquaculture and safe for livestock consumption. Two sample (No. 3, TDS 478.72 and 6, TDS 477.47mgL^-1 ) were unsuitable for aquaculture as a result of higher TDS. Ten samples were unsuitable for livestock because of Cl concentrations were more than 30 mgL^-1. Ca, Na and K contents rated all the waters suitable for aquaculture whereas most of the waters unsuitable for aquaculture because their Mg concentrations were >15 mgL^-1. The SAR and SSP values classified almost all the samples “excellent" for irrigation. Hardness categorized 10 samples "hard" and 8 samples "moderately hard" in class for irrigation. RSC classified 9 samples “suitable" and 9 samples "marginal" for irrigation.

Keywords: Water quality, Surface water, Irrigation, Aquaculture and Livestock consumption

Location: Dumki Upazila in Bangladesh

Start Date: 00-04-2010

End Date: 00-05-2010

Program Area: Crop-Soil-Water Management

Commodity: Water quality

Objectives:

1. Considering the importance of water quality for irrigation , aquaculture and livestock consumption this study was conducted to determine the quality of surface water resources of Dumki Upazila in Bangladesh.

Methodology:

Eighteen surface water samples were collected from the different locations of Dumki Upazila in Bangladesh during April to May 2010. Samples were collected following methods outline by APHA. The analytical works were performed in the Department of Agricultural Chemistry, Patuakhali Science and Technology University, Dumki, Patuakhali. The pH, EC and TDS were determined. CO₃ and HCO₃ were determined acidimetrically and argentometric titration was followed for the determination of Cl. Ca and Mg were determined by complexometric method. Na and K were determined flame photometer. Sodium Adsorption Ratio (SAR), Soluble Sodium Percentage (SSP), Residual Sodium Carbonate (RSC) and Hardness (HT) of samples were calculated following standard formula. Statistical analyses were done following methods outlined by Gomez and Gomez with the help of computer package M-STAT.

Source of Information: J. Agrofor. Environ. 4 (2): 81-84, 2010; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It is observed that the pH of a good number of samples were unsuitable for irrigation and aquaculture. The Ca , Na and K contents were safe for irrigation, aquaculture and livestock. On the other hand most of the waters unsuitable for aquaculture because of higher Mg concentrations. A good number of samples were unsuitable for livestock due to Cl concentrations more than 30 mgL^-1. Therefore, it is recommended that the water quality must be checked before using irrigation, aquaculture and livestock consumption.

Knowledge Management: Journal