Evaluating Groundwater Quality in Bac Lieu Province Using Multivariate Statistical Method and Groundwater Quality Index

Nguyen Thanh Giao, Phan Kim Anh, Huynh Thi Hong Nhien

Abstract

This study aimed to evaluate groundwater quality in Bac Lieu province, Vietnam using multivariate statistical methods and groundwater quality indices (GWQI). Eleven groundwater quality parameters including pH, chloride (Cl?), total dissolved solids (TDS), nitrate (N-NO?3), ammonium (N-NH+4), sulfate (SO2?4), iron (Fe), manganese (Mn), Arsenic (As), hardness and coliforms were collected at seven monitoring sites in May 2020. These parameters were compared with the national technical regulation on groundwater quality (QCVN 09-MT:2015/BTNMT). Cluster analysis (CA) and principal component analysis (PCA) were used to elaborate on the groundwater quality variation and pollution sources. The results indicated that groundwater in the study area was polluted by N-NH+4 while other parameters were within the national regulatory limits. The high concentration of N-NH+4 could be attributed to intensive agricultural practices, especially fertilizer usage. CA results
divided the monitoring sites into three clusters by the parameters of pH, N-NO?3, Cl?, TDS, SO2?4, Fe, Mn, and hardness. The results of PCA revealed that the groundwater quality variation could be caused by four potential sources. The main parameters that influenced groundwater quality were pH, Cl?, TDS, N-NO?3, N-NH+4, Fe, and Mn. The GWQI values were in the range of 2.0-12.6, which means that groundwater quality at all studied sites is of excellent quality. Preventive measures should be strictly implemented to avoid groundwater pollution since this water source is more pivotal under the effects of surface water pollution and climate change.

References

An Giang People's Committee (2015). Report on the state of environment in five years (2011 - 2015) of An Giang province. 181 pages.

Anh, P.K. and Giao, N.T. (2018). Groundwater quality and human health rish assessment related to groundwater consumption in An Giang province, Viet Nam. Journal Vietnamese of Environment, 10; 85 - 91.

Ashwani, R. and Anjali, S. (2017). Assessment of Groundwater Quality and Mapping Human Health Risk in Central Ganga Alluvial Plain, Northern India, Environmental Processes.

Bac Lieu’s People Committees. (2020). Five year (2015-2022) environmental state report.

Be, N.V. and Tuyen, T.T. (2007). Status of exploitation, management and quality of sand dune groundwater in Tra Vinh province. Journal of Science Can Tho University, 8; 95 – 104.

Berg, M., Stengel, C., Trang, P.T.K., Viet, P.H., Sampson, M.L., Leng, M., Samreth, S., and Fredericks, D. (2007). Magnitude of arsenic pollution in the Mekong and Red River Deltas – Cambodia and Vietnam. Science of the Total Environment, 372; 413-425.

Binh, P.T.X, Quynh, L.T.P. and Huong, P.T.M. (2019). Initial survey of microbial density in domestic water in some districts in Hanoi city. Science and Technology Magazine, 55; 99-102.

Chan, N.D. and Hoa, D.T.T. (2005). Evaluation of groundwater quality in Dong Thap province, Southern Federation of Hydrogeology - Engineering Geology, Vietnam.

Chi, D.K. (2005). Environmental Chemistry. Publishing Scientific and Technical.

Chounlamany, V., Tanchuling, M.A., Inoue, T. (2017). Spatial and temporal variation of water quality of a segment of Marikina River using multivariate statistical methods. Water Science and Technology, 66(6); 1510-22.

Danh, V.T. (2008). Household Switching Behavior in the Use of Groundwater in the Mekong Delta, Vietnam. Economy and Environment Program for Southeast Asia (EEPSEA).

Giao N.T., Them, L.T.H. and Ly, L.N.T. (2021). Survey on current status of management, exploitation, use and quality of groundwater in Vinh Chau, Soc Trang. Journal of Agriculture and Rural Development, 11; 162-169.

Giao, N.T. (2020). Groundwater quality and health risks of using arsenic-contaminated water in An Giang. Journal of Agriculture and Rural Development, 20; 124-131.

Giao, N.T. (2021). Chemical and microbial characteristics of surface and ground water in the areas burying swine infected with African swine fever in An Giang province, Vietnam. Journal of Energy Technology and Environment, 3(3); 1-10.

Gordon, S., Truong, T.V., Ngoc, L.T.M., Luyen, T.V. and Tuyen, T.T. (2005). Arsenic in groundwater of lower Mekong.

Hajigholozadeh, M. and Melesse, A.M. (2017). Assortment and spatiotemporal analysis of surface water quality using cluster and discriminant analyses. Catena, 151; 247-258.

Hoa, V.T. (2016). Evaluation of management activities and quality of rural water supply from groundwater in Tien Giang province. Bachelor thesis. Can Tho university.

Kale, A., Bandela, N., Kulkarni, J. and Raut, K. (2020). Factor analysis and spatial distribution of water quality parameters of Aurangabad District, India. Groundw. Sustain. Dev., 10; 100345.
Ministry of Health (2009). QCVN 02:2009/BYT National technical regulation on quality of domestic water.

Ministry of Natural Resources and Environment (2015). QCVN 09-MT:2015/BTNMT national technical regulation on groundwater quality.

Qiying, Z., Panpan, X. and Hui Q. (2019). Assessment of Groundwater Quality and Human Health Risk evaluation of nitrate in the Central-Western Guanzhong Basin, China. International Journal of Environmental Research and Public Health, 16 pages.

Sanh, N.V., Son, N.N., Tuan, V.V. and Khoi, L.D. (2010). Research on water resources in Tra Vinh: Current status of exploitation, use and solutions for sustainable use management. Journal of Science, 15; 167-177.

Soc Trang Province Department of Natural Resources and Environment (2010). Report on the investigation of the status of Groundwater. Project: Planning for Exploitation, Use and Protection of Groundwater Resources in Soc Trang Province until 2020.

Thu, T.A., Tinh, T.K. and Minh, V.Q. (2011). Research on sources of arsenic contamination in groundwater in An Phu district, An Giang province. Journal of Science Can Tho University, 17; 118-123.

UNICEF (2008), W. Arsenic Primer: Guidance for UNICEF Country Offices on the Investigation and Mitigation of Arsenic Contamination. Water, Environment and Sanitation Section Programme Division UNICEF New York.

Varol, M. (2020). Spatio-temporal changes in surface water quality and sediment phosphorus concentration of a large reservoir in Turkey. Environmental Pollution, 259.

Vinh, D.C. and Lam, T.H. (2018). Nitrate concentrations in shallow groundwater in HCMC. Pleiku, Gia Lai. Journal of Science and Technology University of Danang, 3(124): 116-118.

Vu Thi Hoai An, 2019. Current status of arsenic contamination in groundwater in Hanoi area and proposed treatment methods. Westerntech Vietnam.

Winkel, L.H.E., Trang, P.T.K., Lan, V.M., Stengel, C., Amini, M., Ha, N.T., Viet, H.P. and Berg, M. (2011). Arsenic pollution of groundwater in Vietnam axacerbated by deep aquifer exploitation for more than a century. PNAS, 108; 1246-1251.

World Health Organization (WHO), 2008. Guidelines for drinking-water quality - Volume 1: Recommendations Third edition, incorporating first and second addenda. Geneva: World Health Organization.

Authors

Nguyen Thanh Giao
ntgiao@ctu.edu.vn (Primary Contact)
Phan Kim Anh
Huynh Thi Hong Nhien
Giao, N. T., Anh, P. K. ., & Hong Nhien, H. T. . (2021). Evaluating Groundwater Quality in Bac Lieu Province Using Multivariate Statistical Method and Groundwater Quality Index. Indonesian Journal of Environmental Management and Sustainability, 5(4), 129-135. https://doi.org/10.26554/ijems.2021.5.4.129-135
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