Assessment of Groundwater Quality and Its Suitability for Domestic and Irrigation Use in the Coastal Zone of the Mekong Delta, Vietnam

2018 ◽  
pp. 173-185 ◽  
Author(s):  
Nguyen Dinh Giang Nam ◽  
Goto Akira ◽  
Osawa Kazutoshi ◽  
Nguyen Hieu Trung ◽  
Nguyen Vo Chau Ngan
Keyword(s):  
Groundwater Quality ◽  
Coastal Zone ◽  
Mekong Delta

scholarly journals Participatory selection of cwr‐derived salt‐tolerant rice lines adapted to the coastal zone of the mekong delta

Crop Science ◽  
2020 ◽  
Author(s):  
Huynh Quang Tin ◽  
Nguyen Huu Loi ◽  
Åsmund Bjornstad ◽  
Benjamin Kilian
Keyword(s):  
Coastal Zone ◽  
Mekong Delta ◽  
Salt Tolerant ◽  
Participatory Selection ◽  
Selection Of

scholarly journals Groundwater Quality Assessment Using Fuzzy-AHP in An Giang Province of Vietnam

Geosciences ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 330 ◽  
Author(s):  
Minh ◽  
Avtar ◽  
Kumar ◽  
Tran ◽  
Ty ◽  
...  
Keyword(s):  
Groundwater Quality ◽  
River Discharge ◽  
Suspended Solids ◽  
Fuzzy Ahp ◽  
Monsoon Season ◽  
Mekong Delta ◽  
Sediment Concentration ◽  
Sufficient Evidence ◽  
Wet Season ◽  
Shallow Wells

Along with rapid population growth in Vietnam, there is an increasing dependence on groundwater for various activities. An Giang province is known to be one of the agricultural intensification areas of The Vietnamese Mekong Delta (VMD). This study aimed to evaluate the spatiotemporal variation of groundwater quality for a period of ten years from 2009 to 2018 in An Giang. The weighted groundwater quality index (GWQI) was developed based on the fuzzy analytic hierarchy process (Fuzzy-AHP) for assigning weighted parameters. The results show that that shallow wells in the Northeast and Southeast regions of An Giang were mostly categorized under “bad water” quality with high arsenic (As) concentration over the years partly due to huge amounts of sediment deposition in monsoon season. Overall, the reason for the poor groundwater quality in An Giang was the combined effect of both natural and human activities. On the other hand, we detected high values of GWQI links with high As concentration in areas where people extract more groundwater for irrigation. Temporal variation of GWQI suggested that groundwater quality at eight wells has improved from 2009 to 2018 in the wet season as compared to the dry season. The reason behind the improvement of groundwater quality during wet season was the decrease in river discharge, which causes less deposition of suspended solids near the flood plains. Moreover, the filling of unused wells can reduce the movement of pollutants from unused wells to groundwater aquifers. Although there was not sufficient evidence to show the relationship between As and sediment concentration, the temporal reduction trend in river discharge and suspended solids was detected in An Giang. The understanding of groundwater quality can help policymakers protect and manage limited water resources in the long-term.

scholarly journals An assessment of groundwater quality for drinking and agricultural purposes in Ca Mau peninsula, Vietnamese Mekong Delta

2022 ◽  
Vol 964 (1) ◽  
pp. 012008
Author(s):  
Quang Khai Ha ◽  
Mai Van Le Thi ◽  
Phu Le Vo ◽  
Hong Quan Nguyen ◽  
Abhijit Mukherjee
Keyword(s):  
Drinking Water ◽  
Groundwater Quality ◽  
Groundwater Protection ◽  
Mekong Delta ◽  
Water Source ◽  
Quality Data ◽  
Water Users ◽  
Magnesium Hazard ◽  
Groundwater Source ◽  
Private Wells

Abstract Groundwater serves as the major source for drinking water and the only fresh water source in the dry season in Ca Mau province, the Vietnamese Mekong Delta. The study is performed to assess groundwater quality in the area. Groundwater Quality Index (GWQI), magnesium hazard (MH), sodium percentage (Na%), sodium adsorption ratio (SAR), permeability index (PI) combined with geostatistical tools were conducted by using groundwater quality data from 400 samples collected from private wells. GWQI values suggest that 7%, 63%, 28%, 2%, 1% of total samples are classified into excellent, good, poor, very poor and unsuitable for drinking water. High Cl and TDS are the main cause of high GWQI values suggesting that saltwater intrusion deteriorates groundwater quality. For irrigation purposes, 4%, 17%, 36%, 43% of total samples classify into Good, Permissible, Doubtful, Unsuitable respectively by Na% indicator; 55.0%, 30.9%, 11.9%, 2.2% of total samples is Excellent, Good, Doubtful and Unsuitable according to SAR, 54% samples are unsuitable by MH index, and all samples are good by PI. This study provides useful information on groundwater quality for various purposes in Ca Mau province, that could help water management and water users to identify the necessary approach for groundwater protection and water-treatment methods before utilising the groundwater source for specific purposes in the study area.

scholarly journals Groundwater quality and human health risk assessment related to groundwater consumption in An Giang province, Viet Nam

2018 ◽  
Vol 10 (2) ◽  
pp. 85-91
Author(s):  
Kim Anh Phan ◽  
Thanh Giao Nguyen
Keyword(s):  
Health Risk ◽  
Water Supply ◽  
Groundwater Quality ◽  
Human Health ◽  
Human Population ◽  
Human Health Risk ◽  
Arsenic Concentration ◽  
Mekong Delta ◽  
Carcinogenic Risk ◽  
Groundwater Wells

Groundwater is one of the main sources for water supply for domestic use, irrigation, aquaculture and industry in Mekong Delta. With rapidly increasing in human population, groundwater becomes more important for social and economic activities. This study evaluated the quality of groundwater using data from the eight monitoring wells over the period of 2009 - 2016. Human health risk was assessed for the population consuming groundwater contaminated with arsenic. The findings indicated that groundwater wells in An Giang province were contaminated with microorganisms. The total dissolved solids (TDS) and hardness in Phu Tan (PT) and Cho Moi (CM) wells were significant higher than the national technical regulations on groundwater quality (QCVN 09-MT:2015/BTNMT). In addition, groundwater wells in some small islands of An Giang were seriously contaminated with organic matters and arsenic. The mean arsenic concentration was up to 0.55 ± 1.21 mg/L. Estimation of carcinogenic risk for human population showed that the cancer risks ranged from medium (8.66 x 10-4) to high (8.26 x 10-2) for both children and adults. Alternative water supply sources should be offered for the population at risk. Besides, regular health check is essential for local people in the arsenic contaminated groundwater. Nước ngầm là một trong những nguồn cung cấp nước chính cho sinh hoạt, tưới tiêu, nuôi trồng thủy sản và công nghiệp ở Đồng bằng sông Cửu Long. Cùng với sự gia tăng dân số, nước ngầm ngày càng đóng vai trò quan trọng hơn trong các hoạt động phát triển kinh tế - xã hội. Nghiên cứu đã tiến hành đánh giá diễn biến chất lượng nước ngầm thông qua số liệu của tám giếng quan trắc trong giai đoạn từ năm 2009 – 2016. Kết hợp với đánh giá rủi ro sức khỏe của người dân khi sử dụng nước ngầm chứa arsenic. Kết quả nghiên cứu cho thấy các giếng nước ngầm ở tỉnh An Giang đã bị nhiễm vi sinh. Tổng chất rắn hòa tan (TDS) và độ cứng ở trạm Phú Tân và Chợ Mới phân tích được cao hơn quy chuẩn cho phép (QCVN 09-MT:2015/BTNMT). Các giếng nước ngầm ở một số khu vực cù lao của tỉnh An Giang đã bị ô nhiễm hữu cơ và arsenic nghiêm trọng. Nồng độ arsenic trong nước ngầm có thể dao động lên đến 0.55 ± 1.21 mg/L. Rủi ro ung thư ở hai đối tượng người lớn và trẻ em khi sử dụng nước ngầm nhiễm arsenic dao động từ trung bình (8 người trong 1.000 người) tới cao (8 người trong 100 người). Cung cấp nguồn nước thay thế là giải pháp khả thi để giảm rủi ro sức khỏe cho con người trong trường hợp này. Ngoài ra, người dân địa phương cần được khám sức khỏe thường xuyên để kịp thời phát hiện và sớm điều trị bệnh.

Sediment transport and morphodynamical modeling on the estuaries and coastal zone of the Vietnamese Mekong Delta

2019 ◽  
Vol 186 ◽  
pp. 64-76 ◽  
Author(s):  
Le Xuan Tu ◽  
Vo Quoc Thanh ◽  
Johan Reyns ◽  
Song Pham Van ◽  
Duong Tran Anh ◽  
...  
Keyword(s):  
Sediment Transport ◽  
Coastal Zone ◽  
Mekong Delta

Groundwater quality evaluation and health risk assessment in coastal lowland areas of the Mekong Delta, Vietnam

2021 ◽  
pp. 100679
Author(s):  
Dang An Tran ◽  
Maki Tsujimura ◽  
Loc Ho Huu ◽  
Duc Huy Dang ◽  
Phu Le Vo ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Health Risk ◽  
Groundwater Quality ◽  
Health Risk Assessment ◽  
Quality Evaluation ◽  
Mekong Delta ◽  
Coastal Lowland
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