Abstract
This paper summarises the hydrochemical characteristics of the main aquifers of the island of Zakynthos, in the Ionian Sea. A total of 677 groundwater samples were collected from 139 points between 2004 and 2008. The karstic limestone of the mount Vrachionas in the west comprises the major drinking water supply of the island. Increased water demand resulted in the overexploitation and the encroachment of saline water intrusion to the north and south of Vrachionas. Chloride concentrations exceed drinking water threshold in 40% of the samples. Simple groundwater-seawater mixing is the main process occurring within the limestone aquifer. In the east, the confined multilayered Neogene aquifer comprises the secondary drinking water supply of the island. Saline intrusion in this area is limited due to geological constraints and the water is of good quality. Groundwater is clustered in 4 different groups depending on the prevailing hydrochemical process. The alluvial deposits in the central part of the island comprise a shallow localised aquifer pumped mainly for irrigation. This minor aquifer provides good quality irrigation water with some exceedances in chloride and sulphide. Groundwater in this aquifer is a result of simple mixing between fresh and sea water. Trace elements were also analysed resulting in values within the drinking limits.
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References
Appelo, C.A.J. Postma D. (1994). Geochemistry, Groundwater and Pollution. A.A. Balkema.
Diamantopoulou P. (2000) Hydrogeological conditions of the island of Zanynthos. Groundwater protection from contamination and pollution. Phd thesis. Department of Geology, University of Patras
Hem J. (1985) Study and interpretation of the chemical characteristics of natural water. USGS Water supply paper 2254
Giannoulopoulos P. “HYDROCH” Software for the processing and plotting of hydrochemical data. Unpublished
European Council (1998) Directive 98/83/EC of 3 November 1998 on the quality of water intended for human consumption L 330/32 Official Journal of the European Communities 5.12.98
Lloyd W.J., Heathcote A.J. (1985) Natural inorganic chemistry in relation to groundwater. Oxford: Claredon Press
Richards LA (1954) Diagnosis and improvement of saline alkali soils. US Department of Agriculture, Hand Book 60, pp 160
Richter B.C., Kreitler C.W., Bledsoe B.E. (1993) Geochemical techniques for identifying sources of ground water salinisation. C. K. Smoley
Skagias , D. (1990) Report on the 1989 drilling investigation findings, in the island of Zakynthos, Institute for Geology and Mineral Exploration, Report No: E6211
Smyrniotis Ch, Zacharioudakis G., Manakos K. (2010) “Groundwater resources’ evaluation and development in the Ionian islands”, Hydrogeology Report, 3rd Community Support Framework Programme “Competitiveness, IGME, Acharnai, Greece
Subramani T., Elango L., Damodarasamy S. R. (2005) Groundwater quality and its suitability for drinking and agricultural use in Chithar River Basin, Tamil . Environ Geol, 47, p.p. 1099-1110
Zacharioudakis G., Kouris Ch., Smyrniotis Ch. (2010) “Groundwater resources’ evaluation and development in the Ionian islands”, Groundwater chemical analyses report, 3rd Community Support Framework Programme “Competitiveness, IGME, Acharnai, Greece
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© 2011 Springer-Verlag Berlin Heidelberg
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Zacharioudakis, G., Smyrniotis, C. (2011). Characterisation of water quality in the island of Zakynthos, Ionian Sea, Western Greece. In: Lambrakis, N., Stournaras, G., Katsanou, K. (eds) Advances in the Research of Aquatic Environment. Environmental Earth Sciences. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-24076-8_38
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DOI: https://doi.org/10.1007/978-3-642-24076-8_38
Publisher Name: Springer, Berlin, Heidelberg
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