scholarly journals Geoelectric resistivity sounding for deciphering hydrogeology and locating deep tubewell installation sites in Puroshava area of Bagerhat, Bangladesh

2011 ◽  
Vol 42 ◽  
pp. 107-116
Author(s):  
A. S.M. Woobaidullah ◽  
Mohammad Zohir Uddin
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Fresh Water ◽  
Shallow Aquifer ◽  
Northwestern Part ◽  
Deep Aquifer ◽  
Coastal Belt ◽  
Tube Wells ◽  
Electrical Sounding ◽  
Clay Lenses

The study area includes Bagerhat Pouroshava and its surroundings under Bagerhat Sadar Upazila covering an area of 7.53 sq. km with a population of about 50,000. Bagerhat is a coastal district and the subsurface geology is complicated. As in other areas of the coastal belt the quality of ground water in the area is also variable. For ground water development in the study area the shallow aquifer is not suitable as the water is mostly saline to brackish except some isolated fresh water pockets of limited yielding capacity. The deep aquifer is also not very homogeneous in water quality. In the northwestern part it bears fresh water but water quality deteriorates south-southeast with higher depth of occurrence. A comprehensive study is carried out to demarcate the aquifers and to judge the water quality to find the suitable location of the deep tube wells in Bagerhat Pouroshava area. Fifteen geoelectric soundings have been executed in the study area using Schlumberger configuration with maximum spreading of 1200 m. Based on the vertical electrical sounding interpretation results the subsurface sequence is divided into following geoelectric units: The top unit has resistivity less than 5.0 Ωm with a thickness of 1.5 to 20 m and represents the top clay­ silty/sandy clay layer. The second geoelectric unit represents a very fine to  medium  sand  with  thin  clay  lenses  and resistivity varying from 5.0 Ωm  to more than  100.0 Ωm  with a  thickness  of  16 to  135  m. The resistivity of the following unit ranges from l.40 Ωm to 4.8 Ωm and thickness varies from 100 m to more than 300 m. The deepest geoelectric unit shows resistivity from 8.0 Ωm to 18.0 Ωm and represents the deep aquifer. The depth to the aquifer varies from 235 m to 355 m. The most suitable site for groundwater development from the deep aquifer is in the vicinity of East Saira of Shatgambuj union.

scholarly journals Study on Some Physico-Chemical Characteristics of Ground Water of District Rampur - A Statistical Approach

2007 ◽  
Vol 4 (2) ◽  
pp. 162-165 ◽  
Author(s):  
Susheel Kumar Sindhu ◽  
Amit Sharma
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Statistical Approach ◽  
Total Dissolve Solid ◽  
Water Quality Monitoring ◽  
Total Hardness ◽  
Physico Chemical ◽  
Tube Wells ◽  
Domestic Purpose

A systematic study has been carried out to explore the water quality index of ground water of various tehsils of Rampur district. Twenty five water samples from tube wells, open wells and hand pumps at various locations were collected and analyzed for pH, nitrate, turbidity, total dissolve solid, chlorides, total hardness, alkalinity and fluoride. In this study overall water quality of Rampur district is very poor and unsuitable for drinking purpose. Water quality of Bilaspur, Shahabad and Rampur city shows that water may not be used for drinking as well as domestic purpose. Present study recommends that the top priority should be given to water quality monitoring and indigenous technologies should be adopted to make water fit for drinking after treatment such as defluoridation, desalination.

scholarly journals Impact of solid waste on water quality: a case study of Gokarna landfill site, Kathmandu

2004 ◽  
Vol 30 ◽  
Author(s):  
Dinesh C. Devkota ◽  
Kunio Watanabe ◽  
Vishnu Dangol
Keyword(s):  
Water Quality ◽  
Heavy Metal Concentration ◽  
Landfill Site ◽  
High Rate ◽  
Shallow Aquifer ◽  
Quality Analysis ◽  
Deep Aquifer ◽  
Shallow Wells ◽  
Dug Wells ◽  
Domestic Use

The Gokarna landfill site (GLS) was in operation between 1986 and 1996. At present, there is a high risk of shallow aquifer contamination owing to the absence of a barrier layer and a high rate of leachate in now from the landfill site. About 20 m thick sandy bed is transmitting pollutants to the shallow aquifer. The water quality analysis of shallow wells, dug wells and springs around the GLS carried out between November 2003 and March 2004 revealed that they are polluted by the leachate. The heavy metal concentration, chlorides, iron as well as BOD and COD values depicted their increasing trend. Likewise, the microbial contamination was also high, and the water was unsuitable for domestic use. However, there is a low probability of contaminating the deep aquifer owing to the presence of impermeable layers of silt and clay above it. On the other hand, the amount of pollutants in the leachate has decreased significantly in recent years, especially after 1996.

scholarly journals Water Quality Profile of Swan River Himachal Pradesh, India using GIS

2014 ◽  
Vol 13 ◽  
pp. 64-69 ◽  
Author(s):  
A. K. Sharda ◽  
M. P. Sharma ◽  
Pankaj Dumyat
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Quality Data ◽  
Water Quality Data ◽  
Energy And Environment ◽  
Tube Wells ◽  
Quality Profile ◽  
Increasing Demand ◽  
Swan River ◽  
Quality Map

To  meet  the ever increasing  demand  of drinking  water, a number of  shallow  tube wells are used to draw the water from  upper aquifers of  Swan  river. In  most  parts of  the river catchment, the  current  ground  water extraction is exceeding the recharge rate  causing  the rapid depletion of shallow ground water, resulting in serious environmental hazards like land subsidence  during  the  dry season flow and very low dilution levels in the  surface water. The water becomes polluted due to domestic and industrial waste water discharges. The present paper aims to study a water quality map of Swan River based on the computations of the National Sanitation Foundation Index (NSFWQI) and the Overall Index of Pollution (OIP) using water quality data from July to December 2012. A GIS tool has been used to prepare a water quality map of the study stretch (as a function of distance) along upstream and downstream from the pollution sources. The water quality map can help planners and designers make a quantitative assessment of the problem and better suggest long term measures to improve the health of the river. DOI: http://dx.doi.org/10.3126/hn.v13i0.10045HYDRO NEPAL Journal of Water, Energy and Environment Issue No. 13, July 2013Page: 64-69  

scholarly journals Arsenic Mobilization Process in Shallow Aquifer of Bengal Delta Plain: A Field Scale Study to Identify the Role of Coliform Bacteria

2020 ◽  
Vol 1 (8) ◽  
pp. 372-382
Author(s):  
Pinaki Ghosh ◽  
Ayan Das ◽  
Madhurina Majunder ◽  
Samir Kumar Mukherjee ◽  
Debashis Chatterjee
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Chloride Concentration ◽  
Shallow Aquifer ◽  
Coliform Bacteria ◽  
Plate Count ◽  
Wide Spread ◽  
Bengal Delta ◽  
Delta Plain

In Bengal Delta Plain (BDP), shallow aquifer (<50 m) is often contaminated with Arsenic (As). The phenomenon is wide spread in nature thought the BDP notable in Nadia district of west Bengal. The present study highlights a primary screening of As, Fe, MPN and FC in monitored shallow wells. The study designed for two different sites (site-A, High As and site-B Low As area). The water quality monitoring results suggest that high As concentration (Range- 103-171 μgL-1) has been noticed in site A when compared with site B (range-53-99 μgL-1). In sites A, the Fe concentration is high and low in site B. The correlation study (r2) between arsenic and iron are also determined. The value of r2 is 0.94 for site A and 0.73 for site B. The water quality results suggest that the nature of the monitor aquifer is anoxic in nature with low Eh, DO absent and low NO3- and SO4+. Major anion is HCO3- (376 mgL-1) followed by Cl- (28 mgL-1). However chloride concentration is largely varying in the monitored tube well. Microbial study (MPN & FC count) also indicates some relationship among MPN (r2-0.32) and Fe (r2 -0.24). However the relationship is scatter when As concentration is low. The linear trended has also obtained when both As, MPN and FC are high. The physical observation of plate count (Color reaction in Chromo colt Agar) has also been observed. This is a clear indicator of fecal coli form contamination. The study indicates that the microbial mobilization of As is the key factor for enrichment of As in ground water. The possible sources of the microbes are local land-use pattern (notable pit-latrine). Finally, the study highlights the role of coli forms bacteria (Both facultative and non-facultative) are wide spread in shallow rural aquifer of Bengal. Thus microbial process possibly enriches arsenic in shallow ground water.

scholarly journals Seasonal variation of salinity of ground water at Patenga area of Chittagong district in Bangladesh

2019 ◽  
Vol 30 ◽  
pp. 65-70
Author(s):  
A Hoque ◽  
MA Hossen ◽  
MF Islam ◽  
MIU Mahmud
Keyword(s):  
Water Quality ◽  
Seasonal Variation ◽  
Fresh Water ◽  
Saltwater Intrusion ◽  
Chloride Concentration ◽  
Perpendicular Direction ◽  
Tube Wells ◽  
Standard Value ◽  
Tube Well ◽  
Total Dissolved Solid

Availability of safe drinking water is scarce in the coastal areas of Bangladesh due to saltwater intrusion in fresh water aquifer. Patenga, a densely populated coastal area within Chittagong city corporation area, is not under the municipal water supply coverage. The groundwater of Patenga is contaminated by higher concentration of chloride and total dissolved solid. This study aims to investigate the water quality of the tube well based on its distance from flood protection embankment to observed saltwater intrusion in fresh water aquifer. Water sample were collected several times from different tube wells at patenga area based on tube well’s distance from  embankment from February 2017 to August 2017 to observe the seasonal variation of water quality. It was found that chloride concentration, electric conductivity, total dissolved solids etc. are very high compared to the standard value for drinking purpose in Bangladesh. The chloride concentration also decreased as the distance of the tube-wells from embankment increased, which implies that tube well near to coast line has higher chloride concentration. It was also observed that chloride concentration in tube well water also increased during dry season. In this study, the location of the tubewells were considered only along a single alignment in the perpendicular direction of the coastal bank. The study can be further extended for more offsets both in the parallel and the perpendicular direction of the coastal bank for better understanding of the groundwater salinity intrusion. Progressive Agriculture, Vol. 30, Suppl. 1: 65-70, 2019

scholarly journals Some Physico-Chemical Parameter's Assessment for The Groundwater Samples of Kathlal Tehsil, Gujarat, India in Summer Season

2019 ◽  
pp. 811-814
Author(s):  
Pravin Mevada ◽  
G. R. Jani ◽  
Preksha Patel
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Water Samples ◽  
Water Quality Index ◽  
Quality Index ◽  
Summer Season ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Groundwater Samples ◽  
Tube Wells

The present study deals with Assessment of Physico-Chemical parameters of ground water samples of Kathlal tehsil. Physio-Chemical parameters like EC, Temperature, TDS, Ca2+ , Mg2+ , Na+, K+ ,Cl-, CO32-, HCO3-, SO42- , NO3-, F- were analyzed in this present study. The samples were collected in April-2013 (Summer Season). Total 10 samples of groundwater was carried out from Tube wells/Bore wells of Kathlal Tehsil in order to assess water quality index.

scholarly journals ASSESSMENT OF DRINKING WATER QUALITY IN RURAL AREAS OF SONITPUR DISTRICT (ASSAM), INDIA.

2020 ◽  
Vol 9 (7) ◽  
pp. 190-197 ◽  
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Rural Areas ◽  
Health Effect ◽  
Eastern Region ◽  
Drinking Purposes ◽  
Tube Wells ◽  
North Eastern ◽  
Defence Research

The aim of this study is to assess the water quality of ground water in rural areas as the water is extensively used for several purposes of daily use including drinking one. Ground water was collected from rural areas (North-Eastern region) of Tezpur city of Assam (India). The above areas are situated nearby Defence Research Laboratory. The water samples were collected from different consumer ends viz. open wells, bore wells, tube wells etc. for the analysis of physicochemical parameters like pH, Dissolved Oxygen (DO), TDS, Turbidity, Conductivity, Resistivity, Salinity, Iron and Fluoride. pH, turbidity, bacteria and iron of few samples are found to have more than permissible limit (WHO/BIS/USEPA) with DO<4 ppm. Civil population use ground water for drinking purposes and they face health effect due to contaminants present in the water.

scholarly journals Groundwater quality assessment for different uses using various water quality indices in semi-arid region of central Tunisia

2020 ◽  
Author(s):  
Soumaya Aouiti ◽  
Fadoua Hamzaoui Azaza ◽  
Fetheddine El Melki ◽  
Monji Hamdi ◽  
Fulvio Celico ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
National Standards ◽  
Shallow Aquifer ◽  
World Health ◽  
Water Type ◽  
Deep Aquifer ◽  
Central Tunisia ◽  
Deep Aquifers

Abstract The Hajeb Layoun-Jelma basin, located in the central Tunisia, is the principal source of water supply for Sidi Bouzid and Sfax region. The over-abstraction from this groundwater, since 1970, and the intensive agriculture activities led to the degradation of the water quantity and quality. The quality evaluation for this groundwater is very important tool for sustainable development and decision for water management. A total of 28 groundwater samples, from shallow, springs, and deep aquifers, were collected, storage and analyzed to evaluate its quality suitability for domestic and agriculture purposes using geographic information system and geochemical methods. For the both aquifers, the abundance of cations: Na > Mg > Ca > K, and of anions in the order: Cl > HCO3 > SO4. The dominant hydrochemical facies, for the shallow aquifer and springs, are Na-Cl and Ca-Mg-Cl; for the deep aquifer, the geochemical facies are Na-Cl, Ca-Mg-Cl, and Ca-Cl. The comparison of the major parameters and the chemical data with the World Health Organization standards and the national standards indicate that this groundwater is suitable for drinking, except in some samples, with high salinity concentrations. The water quality was assessed, for drinking uses, using “water quality index,” “entropy,” and “improved water quality index.” The results mentioned that the improved water quality index is the best method which indicated that the poor water quality coincide with the Na-Cl water type. The entropy method and the water quality index present the optimistic methods. The irrigation suitability assessment was made using various parameters (SAR, TH, % Na, PI, MH, KR, EC). The results revealed that the majority of samples in Hajeb Layoun-Jelma basin are not appropriate for irrigation uses.

scholarly journals Aquifer Geometry and Water Quality in Relation to Occurrence and Distribution of Peat in Baghia-Chanda Beel, Bangladesh

2016 ◽  
Vol 8 (3) ◽  
pp. 355-370
Author(s):  
F. Ferdous ◽  
M. R. Rafiq ◽  
M. I. Mahmud
Keyword(s):  
Water Quality ◽  
Sea Water ◽  
Ground Surface ◽  
Shallow Aquifer ◽  
Surface Distribution ◽  
Quaternary Period ◽  
Deep Aquifer ◽  
Drinking Water Standard ◽  
Geochemical Evaluation ◽  
Aquifer Geometry

Baghia-Chanda Beel, largest peat basin in Madaripur and Gopalganj (Bangladesh) districts occupies thick deposits of peat. Study focuses on the aquifer geometry and geochemical evaluation of groundwater in relation to occurrence and distribution of peat. Landuse map is generated to show the surface distribution of peat. Thick peat and clay layer respectively, with an average thickness of 7 ft, has been observed throughout the study area. Principal productive aquifer about 40 ft thick, is found at depth between 35 to 145 ft below ground surface. According to pH and EC values, groundwater is mildly acidic to slightly alkaline and fresh to brackish. High bicarbonate concentration which is more likely to be attributed from the oxidative degradation of peat is found at shallow aquifer below peat. Elevated sodium (Na+) and chloride (Cl-) concentrations in deep aquifer are due to the trapping of ancient sea water in the subsurface during Quaternary period. Although  deep aquifer is extensively low in arsenic, 68% and 44% shallow groundwater samples are arsenic (As) contaminated according to WHO, 2011 and Bangladesh Drinking Water Standard (DoE, 1997) limit respectively. Assessment of Water Quality Indexes (WQI>100) suggests that water from deep aquifer is more suitable for drinking purposes.

scholarly journals Water quality of shallow tube wells as affected by sanitary latrines and groundwater flow

2014 ◽  
Vol 37 (2) ◽  
pp. 231-243 ◽  
Author(s):  
Syed Hafizur Rahman ◽  
ANM Fakhruddin ◽  
Mohammed Jamal Uddin ◽  
Md Shahid Zaman ◽  
Asish Talukder ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Groundwater Flow ◽  
Shallow Aquifer ◽  
Chemical Parameters ◽  
Coliform Count ◽  
Physico Chemical ◽  
Tube Wells ◽  
Tube Well

The present study investigated the probable influence of latrines and groundwater flow on the water quality of shallow tube wells in Shinduria village (23?52' N and 90?14' E) of Dhaka district, Bangladesh. A questionnaire survey was made to collect basic information on tube wells and latrines. Four boreholes were drilled to investigate lithostratigraphy. Twenty one water samples were collected and their physico-chemical parameters (Dissolved Oxygen, pH, phosphate, sulphate, nitrate, nitrite and iron) were analyzed using standard method. Total viable bacterial count (TVBC), total coliform count (TCC), total faecal coliform count (TFCC), total salmonella shigella (TSS) and total vibrio count (TVC) were also made using membrane filtration method. Average depth of the tube wells was 120 ft and most of them were less then ten years old. About 85% latrines were ring slab type and about 50% of these were built during the last five years. From borehole data, a shallow aquifer was identified at a depth of hundred feet from where local people extract drinking water. Although most of the physico-chemical parameters of the tested samples were within the Department of Environment (DoE). But almost all of the tested samples failed to ensure the quality of acceptable level for drinking water recommended by World Health Organization (WHO) due to the presence of higher load of TVBC (5.07 × 10³ cfu/100 ml), TCC (8.44 × 103cfu/10 0ml), TFCC (5.16 × 10² cfu/100 ml) and TSS (1.10 × 103cfu/100 ml). Local geological conditions and proximity between tube well and latrine promoted bacterial transport towards tube well while groundwater flow direction from the adjacent Bangshi River influenced the phenomenon. DOI: http://dx.doi.org/10.3329/jbas.v37i2.17565 Journal of Bangladesh Academy of Scinces, Vol. 37, No. 2, 231-243, 2013

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