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ISSN Print: 2381-1013 ISSN Online: 2381-1021

American Journal of Agricultural Science

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Water Quality Assessment of Deep Aquifer for Drinking and Irrigation Purposes in Selected Coastal Region of Bangladesh

American Journal of Agricultural Science
Vol.3 , No. 6, Publication Date: Jan. 4, 2017, Page: 85-91

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Authors

[1]	Md. Shahin Hossin, Department of Soil Science, Patuakhali Science and Technology University, Patuakhali, Bangladesh.
[2]	Md. Abdul Matin, Department of Soil Science, Bangladesh Agricultural University, Mymensingh, Bangladesh.
[3]	Mohammad Kabirul Islam, Department of Soil Science, Patuakhali Science and Technology University, Patuakhali, Bangladesh.
[4]	Md. Mustafizur Rahman, Agriculture Training Institute (ATI), Faridpur, Bangladesh.
[5]	Morsheda Akter Mukta, Department of Agriculture, L.A.M. United Mohila College, Dumki, Patuakhali, Bangladesh.
[6]	Md. Sagirul Islam Majumder, Department of Subtropical Agro-Production Science, University of the Ryukyus, Okinawa, Japan.

Abstract

The present study focused on the hydrochemistry of groundwater in Mirzagonj upazila under Patuakhali district to assess the quality of groundwater for determining its suitability for drinking and irrigation purposes. Groundwater samples were collected from thirty stations of Mirzagonj upazila during dry season and were analyzed for physico-chemical parameters such as pH, EC, sodium, potassium, calcium, magnesium, phosphate, sulphate, carbonate and bicarbonate. The results of this study showed that, the status of groundwater was better for drinking purposes. The calculated values of sodium adsorption ratio (SAR) and soluble sodium percentage (SSP) indicated that the water was unsuitable but in case of residual sodium bicarbonate (RSBC) values it was suitable for irrigation uses. The concentrations of Ca²⁺, SO₄^2-, PO₄^3-, and HCO₃^- in all water samples were within the safe limit but the contents of Na⁺, Ca²⁺, Mg²⁺ and CO₃^2- in some water samples were problematic for irrigation indicating these ions as pollutants. US Salinity diagram was used for evaluating the water quality for irrigation which suggests that the majority of the groundwater samples were unsuitable for irrigation.

Keywords

Water Quality, Deep Aquifer, Drinking and Irrigation, SAR, SSP, RSBC

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