Your search found 4 records
1 Akintunde, O. A.; Ozebo, C. V.; Oyedele, K. F. 2022. Groundwater quality around upstream and downstream area of the Lagos Lagoon using GIS and multispectral analysis. Scientific African, 16:e01126. (Online first) [doi: https://doi.org/10.1016/j.sciaf.2022.e01126]
Groundwater flow ; Water quality ; Upstream ; Downstream ; Geographical information systems ; Lagoons ; Coastal aquifers ; Drinking water ; Hydrochemistry ; Parameters / West Africa / Lagos Lagoon / Atlantic Ocean
(Location: IWMI HQ Call no: e-copy only Record No: H051049)
https://www.sciencedirect.com/science/article/pii/S2468227622000357/pdfft?md5=0ed0d5d1ce8c94ea84636352de2e95da&pid=1-s2.0-S2468227622000357-main.pdf
https://vlibrary.iwmi.org/pdf/H051049.pdf
https://vlibrary.iwmi.org/pdf/H051049.pdf
(5.81 MB) (5.81 MB)
Despite covering over 70% of the earth crust, access to potable water is still extremely challenging due to the ubiquity of several water contaminants. In mitigating the effects of these aquifer pollution, a distinctive identification of polluted areas as well as pollution sources is essential. To address the Africa Union's Agenda 2063 goal for environmental sustainability in water security, the Lagos coastal aquifer was evaluated for groundwater pollution induced by seawater intrusion. Hence, the purpose of this study is to determine a zone with suitable groundwater. In so doing, we obtained forty-three groundwater samples for hydrochemical evaluation within selected areas of the Lagos metropolis. However, physico-chemical analyses were conducted on the collected groundwater samples; hydrochemical facies were used to evaluate the dissolved cations and anions. Apart from utilizing the water quality index (WQI) to determine the samples portability, the sodium absorption ratio (SAR) was calculated and used to ascertain the suitability of groundwater for irrigation purposes. Put differently, a spatial variability map was produced using inverse distance weight (IDW) on the ArcGIS module. Furthermore, the piper tri-linear model was adopted to practically identify the four (4) prominent hydrochemical facies which include Calcium Magnesium Chloride 39.5%, Calcium Bicarbonate 23.3%, Calcium Alkali Bicarbonate 23.3% as well as Alkali Bicarbonate. Using the piper tri-linear model, Calcium possesses the dominant facies in all the samples. The result from the water quality index analysis shows that 16.28% of the water sample is excellent water, 32.56% is good water, 39.53 is poor water, and 11.63 is very poor water. The SAR result of the water sample reveals that 32.56% are excellent water, 44.19% good water, 23.26% doubtful and zero percent are unsuitable. This implies the groundwater around the coastal area can be used for irrigation purposes. Finally, from all the spatial variability maps and potentiometric maps, groundwater around the upstream is preferred to downstream due to groundwater flow direction and its remoteness to the Atlantic Ocean and not the shallow lagoon.
2 Hasan, Md. M.; Shuvho, Md. B. A.; Chowdhury, M. A.; Alam, A. K. M. M.; Hassan, M.; Hossain, N. 2022. Water criteria evaluation for drinking and irrigation purposes: a case study in one of the largest rivers of Sundarbans World Heritage Region. Water Supply, 22(6):5800-5817. [doi: https://doi.org/10.2166/ws.2022.198]
Drinking water ; Irrigation water ; Water quality ; Hydrochemistry ; Surface water ; Water supply ; River water ; Salinity ; Case studies / Bangladesh / Sundarbans / Pasur River / Khulna
(Location: IWMI HQ Call no: e-copy only Record No: H051256)
https://iwaponline.com/ws/article-pdf/22/6/5800/1070921/ws022065800.pdf
https://vlibrary.iwmi.org/pdf/H051256.pdf
https://vlibrary.iwmi.org/pdf/H051256.pdf
(0.64 MB) (654 KB)
Pasur river is one of the largest rivers in the World Heritage Sundarbans mangrove forest region of the southwestern part of Bangladesh. Due to lack of alternative sources, more than 1 million inhabitants living in the Pasur river basin area rely heavily on the river water for domestic, irrigation, and industrial purposes without proper and reliable information on the water qualities and contamination types. The study aimed at evaluating the suitability and sustainability for irrigation and consumption practices, and suitable hydrogeochemical techniques and quality of Pasur river water of Sundarbon region of Bangladesh were investigated. Water samples were collected from six locations during pre-monsoon and post-monsoon seasons and assessed for suitability for drinking and irrigation application. The water quality index (WQI) was calculated to evaluate the suitability for drinking. WQI indicates that the river water samples during both the seasons are safe for drinking in the good category. Sodium percentage (Na%), sodium adsorption ratio (SAR), magnesium hazard (MH), residual sodium carbonate (RSC) were investigated to assess the feasibility for agricultural applications. Most of the indices, such as SAR, Na%, and RSC results recommend that the river water is safe for irrigation. A suggestion is made that MH in river water should be controlled for the use of water in irrigation. United States Salinity Laboratory (USSL) diagram and Wilcox diagram analysis also identified that river water as a usable category for irrigation purposes is feasible during both seasons.
3 Hosseininia, M.; Hassanzadeh, R. 2023. Groundwater quality assessment for domestic and agricultural purposes using GIS, hydrochemical facies and water quality indices: case study of Rafsanjan Plain, Kerman Province, Iran. Applied Water Science, 13(3):84. [doi: https://doi.org/10.1007/s13201-023-01891-9]
Groundwater ; Water quality ; Geographical information systems ; Irrigation water ; Salinity ; Groundwater flow ; Drinking water ; Aquifers ; Electrical conductivity ; Hydrochemistry ; Case studies / Iran Islamic Republic / Kerman / Rafsanjan Plain / Daranjir–Saghand Basin
(Location: IWMI HQ Call no: e-copy only Record No: H051931)
https://link.springer.com/content/pdf/10.1007/s13201-023-01891-9.pdf?pdf=button
https://vlibrary.iwmi.org/pdf/H051931.pdf
https://vlibrary.iwmi.org/pdf/H051931.pdf
(5.52 MB) (5.52 MB)
This paper investigates the suitability of groundwater for domestic and agricultural use in the Rafsanjan plain, southwest part of the Daranjir–Saghand basin, Iran. Fifty-five groundwater samples were collected and analyzed by six methods including the water quality index (WQI), Schoeller diagram, irrigation water quality (IWQ) parameters, Piper diagram, US salinity diagram and Wilcox diagram. The spatial distribution maps of chemical parameters and groundwater quality indices were plotted using the IDW method in GIS. The results showed a low concentration of major ions in the southeastern part and a high concentration from the central part towards northwestern part of the plain. The concentration of major ions in groundwater was strongly affected by groundwater flow, geological setting and the existence of the evaporative layers in the studied area. Moreover, results revealed that most of samples exceeded the acceptable limits recommended by the WHO and ISIRI1053 standards for domestic and agricultural purposes. In most of the wells, groundwater was classified into saline and very hard categories. The analyses based on WQI values indicated that above 87% of water samples were unsuitable for drinking purposes. IWQ parameters expressed that 85%, 67%, 32%, 51%, 43% and 50% of samples had EC > 3000, Na% > 60%, MAR > 50%, KR > 1, SAR > 9 and Cl- > 350, respectively, which were unsuitable for irrigation use. The dominant hydrochemical facies of water was Na–Cl–SO4 type, and 63% and 22.8% of samples were categorized as C4S4 and C4S3 class, with very high-salinity–high-sodium hazards and very high-salinity–high-sodium hazards, respectively. It indicated that most irrigated lands in this study area were affected by different levels of salinity and sodicity hazards that caused decreases in plant growth and crop productivity. The results can assist decision-makers and planners in prioritizing groundwater resources management in the region.
4 Bilal, H.; Li, X.; Iqbal, Muhammad Shahid; Mu, Y.; Tulcan, R. X. S.; Ghufran, M. A. 2023. Surface water quality, public health, and ecological risks in Bangladesh—a systematic review and meta-analysis over the last two decades. Environmental Science and Pollution Research, 30(40):91710-91728. [doi: https://doi.org/10.1007/s11356-023-28879-x]
Surface water ; Water quality ; Public health ; Risk assessment ; Health hazards ; Water pollution ; Ecological factors ; Physicochemical properties ; Hydrochemistry ; Cations ; Anions ; Heavy metals ; Arsenic ; Cadmium ; Chromium ; Mercury ; Lead ; Biological contamination ; Faecal coliforms ; Cryptosporidium ; Drinking water ; Rivers ; Water management ; Water policies / Bangladesh
(Location: IWMI HQ Call no: e-copy only Record No: H052106)
(2.75 MB)
Water quality has recently emerged as one of the utmost severe ecological problems being faced by the developing countries all over the world, and Bangladesh is no exception. Both surface and groundwater sources contain different contaminants, which lead to numerous deaths due to water-borne diseases, particularly among children. This study presents one of the most comprehensive reviews on the current status of water quality in Bangladesh with a special emphasis on both conventional pollutants and emerging contaminants. Data show that urban rivers in Bangladesh are in a critical condition, especially Korotoa, Teesta, Rupsha, Pashur, and Padma. The Buriganga River and few locations in the Turag, Balu, Sitalakhya, and Karnaphuli rivers have dissolvable oxygen (DO) levels of almost zero. Many waterways contain traces of NO3, NO2, and PO4-3 pollutants. The majority of the rivers in Bangladesh also have Zn, Cu, Fe, Pb, Cd, Ni, Mn, As, and Cr concentrations that exceed the WHO permissible limits for safe drinking water, while their metal concentrations exceed the safety threshold for irrigation. Mercury poses the greatest hazard with 90.91% of the samples falling into the highest risk category. Mercury is followed by zinc 57.53% and copper 29.16% in terms of the dangers they pose to public health and the ecosystem. Results show that a considerable percentage of the population is at risk, being exposed to contaminated water. Despite hundreds of cryptosporidiosis cases reported, fecal contamination, i.e., Cryptosporidium, is totally ignored and need serious considerations to be regularly monitored in source water.
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