Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Evaluation of Groundwater Quality in Bagerhat District, Bangladesh

Md Iqbal Hossain*
Institute of Environmental Science, University of Rajshahi, Rajshahi-6205, Bangladesh

A.H.M. Selim Reza
Department of Geology and Mining, University of Rajshahi, Rajshahi-6205, Bangladesh

S. M. Shafiuzzaman
Institute of Environmental Science, University of Rajshahi, Rajshahi-6205, Bangladesh

Md. Sultan-Ul-Islam
Department of Geology and Mining, University of Rajshahi, Rajshahi-6205, Bangladesh

Abstract/ Executive Summary:

Groundwater quality in Bagerhat district of Bangladesh was assessed during pre-monsoon and post-monsoon period of the year 2016. The study is aimed to find out the seasonal water quality of groundwater which shows most of the parameters values of the samples were decreased during post-monsoon period due to the dilution of monsoon rainfall water. To fulfill the research objectives, some significant physicochemical parameters of groundwater have been analyzed and interpreted in the study. Among the physical parameters of the most samples of both seasons, the pH and TH values are within the WHO and DoE’s allowed limits except few samples of post-monsoon; However in the most samples, the values of EC and TDS exceeded this recommended limit, except for a few samples for subsequent samples during the monsoon . Among the chemical parameters, Na+ and Cl- values of all the samples exceeded WHO and DoE permissible limit, while Ca2+, Mg2+ , SO4 2- and NO3 - values are significantly low and their values are below the WHO and DoE’s permissible limit but K+ and HCO3 - values for few samples are below, some are within the permissible limit and some are exceeded the WHO and DoE’s permissible limit. So the water quality controlling parameters especially EC, TDS, Na+ , and Cl- absorbency are objectionable in the most of the groundwater specimens which exceeding the WHO (2006) and DoE (1997) standards and unlikely for drinking and irrigation purposes. The Pie study also shows that the order of the abundance of major cations in the ground water is Na+ > Ca2+ > K+ > Mg2+ while that of anions is Cl- > HCO3 - >SO4 2- > NO3 - in both periods in the area. Overall, the results revealed that the groundwater quality in the study area is objectionable and unsuitable for drinking, domestic and agriculture purposes.

Keywords: : Coastal Area; Groundwater; Hydrochemistry; Quality Measurement

Location: Bagerhat District, Bangladesh

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Groundwater, Water quality

Objectives:

Fresh or drinking water is unavailable in a major part of the study area , where local peoples are using or drinking polluted surface water without proper purification. So it is very important to find out the groundwater quality of Bagerhat district. Generally water quality depends on physical, chemical and biological properties of water. However biological properties have been neglected in the study due to researcher's limitation. So, physicochemical analysis has considered evaluating the groundwater quality in the study area. The study result has been compared with WHO (2006) and DoE (1997) permissible standard limit to measure water quality for drinking, agriculture and domestic purposes. The main objective of the present study is to evaluate the groundwater quality of the study area.

Methodology:

1.1 Study Area The research work has been scheduled in the coastal adjoining "Bagerhat district" including 9 (Nine) Upazillas having area of 3959.11 sq. km (P&HC, 2011). The Upazilas are Mollahat, Fakirhat, Chitalmari, Kachua, Rampal, Mongla, Morrelganj and Sarankhola. The area is bounded by Gopalganj district and Norail district on the north, the Bay of Bengal on the south, Perojpur and Barguna district on the east and Khulna district on the west shown in figure1 and which is located between 22°48' N to 22°59'N latitudes and 89°40' E to 90°57' E longitudes formed primarily by the deposition of late Holocene to Recent sediments carried by the Ganges-Brahmaputtra-Meghna Rivers.

2. Materials and Methods Twenty four samples were collected from domestic area of different location in the study area during premonsoon (May) and post-monsoon (November), 2016 by the following of Shafiuzzaman and Haque (2015). Samples are collected in 500 ml high-density polypropylene (HDPP) bottles. Color, taste and odor are tested by necked eye, tongue and nose. Temperature was collected by Toshiba Mercuric Thermometer. pH was measured by pH meter (HANNA pH-209 & EZ-DO-6011, SN-000367, Model-IP57, Made in Taiwan). EC was measured by EC meter (HANNA EC & TDS, S-349456, and Model-98312). TDS, TH, SAR, Salinity and %Na measured by recommended equations. Na+ , Ca2+, Mg2+ and K+ were analyzed by AAS method (Atomic AbsorptionSpectrophotometer, Model: Simadzu AA-6800). Cl- and HCO3 - were analyzed by Titration Method. SO4 2- and NO3 - were analyzed by Sulfaver-4 Sulphate Method (HACH, Model: DR-3900) and Cadmium Reduction Method (HACH, Model DR-3900). Most of the parameters analyzed in the Laboratory of Institute of Environmental Science Lab, RU; in the Environmental Science and Technology Lab (JUST) Jessore and in the Soil Resource Development Institute (SRDI), Rajshahi.

Source of Information: Rajshahi University Journal of Environmental Science, 8: 59-70, 2019

Article Link (Online Journal): www.ru.ac.bd/ies

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

There is a lack of freshwater all over the world now. Bangladesh is no exception to it and coastal areas of Bangladesh are more vulnerable to salinity problem. Due to which the salinity of water in the coastal area is increasing. As a result water quality is deteriorating day by day. The evaluation of groundwater quality based on the physicochemical parameters concluded that all parameters are seasonally fluctuated, while most of the parameters remarkably decreased during post-monsoon period because most of the physicochemical properties concentrations in groundwater of the area are significantly decreasing during post-monsoon period due to monsoon rainwater dilution. Comparing of the most physicochemical properties of groundwater in the study area with WHO (2006) and DoE (1997) standard limits shows that some properties are acceptable in post-monsoon most of are unacceptable in pre-monsoon besides some are doubtful because their position is below the guideline. The groundwater quality for irrigation is compared based on electrical conductance (EC), percent sodium (%Na) and sodium absorption ratio (SAR) shows that groundwater moderately unsuitable and poor quality for irrigation purposes, but little is suitable for irrigation in post-monsoon period according to EC values (Wilcox, 1995). So the study result concluded that most of the groundwater in the area is unsuitable or objectionable for drinking, domestic and irrigation purposes during both seasons. That is why the lives of the people of the coastal area are being severely damaged as well as the country’s economy. The coastal people and the government need a lot of support to maintain the quality of groundwater. However, some techniques such as prevention of seawater intrusion, rainwater harvesting, land pattern changing, decreasing pumping of tube well, making embankment can create a comparatively better way to find suitable water for various purposes for future generations.

Knowledge Management: Journal