Assessment of Groundwater Quality in the Dogger Aquifer of Poitiers, Poitou-Charentes Region, FranceReport as inadecuate




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The Poitou-Charentes, located in theCenter-West of France, is a region where economy is based mainly onagriculture. This region, made up of 4 Departments Vienne, Charente, CharenteMaritime, Deux-Sèvres, is supplied largely by groundwater exploitation, bothfor consumption and for irrigation. This resource is thus vital to the regionand its preservation is a major issue. The objective of this study is thedetermination of the groundwater quality in the Dogger aquifer of PoitiersVienne Department, which is the main water resource for this area and toachieve a better understanding of the factors influencing groundwatermineralization. Sixty-six wells, distributed over the study area, were sampledand analyzed for major ions Ca2+, Mg2+, Na+,K+, HCO3-, Cl-, SO42-, NO3-. Data were interpreted using graphical Piper diagram, binary diagramsand statistical methods correlation matrix, principal components analysis.Saturation and chloro-alkaline indices were also computed. It is shown that thegroundwater mineralization is mainly associated with Ca2+, K+,HCO3-, Cl-, SO42-, and NO3-. Hydrochemistry of groundwater is determined by both natural processes,and anthropogenic factors. Natural factors are dissolution of carbonate anddolomitic minerals, and cation exchanges with clays, while anthropogenicfactors are contaminant infiltration with waste waters and agriculturalfertilizers. Nitrate is the main contaminant found in the groundwater and makesthis resource unsuitable for consumption at some places.

KEYWORDS

Groundwater, Hydrochemistry, Principal Component Analysis, Pollution, Dogger Aquifer, Poitiers

Cite this paper

Shorieh, A. , Porel, G. and Razack, M. 2015 Assessment of Groundwater Quality in the Dogger Aquifer of Poitiers, Poitou-Charentes Region, France. Journal of Water Resource and Protection, 7, 171-182. doi: 10.4236-jwarp.2015.73014.





Author: Amani Shorieh, Gilles Porel, Moumtaz Razack*

Source: http://www.scirp.org/



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