Assessment of the Impact of the Landfill on Groundwater Quality: A Case Study of the Mediouna Site, Casablanca, Morocco


A local case study for the environmental impact of landfill leachate on groundwater quality along and across the Mediouna landfill is presented, based on physicochemical and statistical approaches. The landfill has been operational since 1986 and it receives municipal solid wastes produced by the city of Casablanca, whose the daily waste output exceeds 4000 t. This waste is stockpiled in old sandstone quarries; the site has never been sealed before its opening. The aim of this study is to update the knowledge about groundwater quality around the landfill, to determine the factors controlling the extent of groundwater contamination and compare the results with those of 1989 and 2001. To evaluate groundwater pollution due to this landfill, piezometric level and geochemical analyses have been carried out on 19 wells. The physicochemical data of groundwater down-gradient of the landfill site is showing a deterioration of its quality, to the point that the wells have become unusable. The statistical treatment of physicochemical data by principal components analysis allowed the mapping of three areas downstream of the landfill. The first is hardly polluted, the second is moderately polluted and the third is characterized by mineralization through their waters and the almost absence of organic matter. The extent of groundwater contamination from an area with a radius of 200 m in 1989, to an area with a radius of about 1 km in 2001 to more 2 km as of today. This extension is controlled by the structural factor of faults, by the lithology of aquiferous and the intensity of water pumping; the wells equipped with pumps exert pressure against the advanced front of the pollution.

Share and Cite:

D. Smahi, O. Hammoumi and A. Fekri, "Assessment of the Impact of the Landfill on Groundwater Quality: A Case Study of the Mediouna Site, Casablanca, Morocco," Journal of Water Resource and Protection, Vol. 5 No. 4, 2013, pp. 440-445. doi: 10.4236/jwarp.2013.54043.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] M. Djouka, “Le Probleme des Déchets Ménagers a Abidjan,” Techniques, Sciences et Méthodes-L’Eau, Vol. 5, 1988, pp. 285-290.
[2] C. Desachy, “Les Déchets en 1994,” Techniques, Sciences et Méthodes-L’Eau, Vol. 11, 1994, pp. 603-609.
[3] M. El-Fadel, A. N. Findikakis and J. O. Leckie, “Environmental Impacts of Solid Waste Landfilling,” Journal of Environmental Management, Vol. 50, 1997, pp. 1-25. doi:10.1006/jema.1995.0131
[4] T. H. Christensen, R. Kjeidsen, P. L. Bjerg, D. L. Jensen, J. Christensen, A. Bauna, H. J. Albrechtsen and G. Heron, “Biogeochemistry of Landfill Leachate Plumes,” Application Geochemistry, Vol. 16, No. 7-8, 2001, pp. 659-718.
[5] P. T. Williams, “Waste Treatment and Disposal,” 2nd Edition, John Wiley & Sons, Hoboken, 2005. doi:10.1002/0470012668
[6] U. K. Singh, M. Kumar, R. Chuhan, P. K. Jha, A. L. Ramanathan and V. Subramanian, “Assessment of the Impact of Landfill on Groundwater Quality: A Case Study of the Pirana Site in Western India,” Environmental Monitoring and Assessment, Vol. 141, 2008, pp. 390-321. doi:10.1007/s10661-007-9897-6
[7] J. Hoeks and J. Harmsen, “Methane Gas and Leachate from Sanitary Landfills,” Research Digest, Wageningen, 1980, p. 32.
[8] A. Parker and G. M. Williams, “Landfill Site Selection and Operation from Municipal Solid and Hazardous Waste Disposal, Developments in Environment Control and Public Health,” Applied Sciences Publishers, London, 1981, pp. 1-37.
[9] J. Harmsen, “Identification of Organic Compounds in Leachate from a Waste Tip,” Water Research, Vol. 17, No. 6, 1983, pp. 699-705. doi:10.1016/0043-1354(83)90239-7
[10] F. G. Pohland, J. T. Deryien and S. B. Ghosh, “Leachate and Gas Quality Changes during Landfill Stabilization of Municipal Refuse. Anaerobic Digestion,” Proceeding of 3rd International Symposium, Boston, 1983, pp. 185-202.
[11] A. Ajir, “Gestion des Déchets Solides au Maroc: Problématique et approche de développement,” Proceedings of International Symposium on Environmental Pollution Control and Waste Management, Tunis, 7-10 January 2002, pp. 740-747.
[12] A. Ajir, “Gestion des Déchets Solides au Maroc, Programme National des Déchets Ménagers,” 1st Expo, Andalusia, 2009.
[13] H. Chichaoui, “Financement des Déchets, Cas de Casablanca,” Thesis, l’ISCAE, Morocco, 2008.
[14] A. Fekri, B. El Mansouri, O. El Hammoumi and C. Marrakchi, “Impact of Casablanca Municipal Landfill on Groundwater Resources,” International Water Technology Journal, Vol. 3, 2012, pp. 210-216.
[15] D. Smahi, A. Fekri and O. El Hammoumi, “Environmental Impact of Casablanca Landfill on Groundwater Quality, Morocco,” International Journal of Geosciences, Vol. 4, 2013, pp. 202-211. doi:10.4236/ijg.2013.41017
[16] Direction Générale de l’Hydraulique, “Impact des Déchets Solides sur les Ressources en Eau, Cas de la Décharge de Lissasfa,” 1990.
[17] A. Fekri, “Impact de la Décharge de Médiouna sur les Ressources en Eaux Souterraines,” Thesis, University Hassan II Mohammedia, Casablanca, 2007.
[18] A. Piqué, “Géologie du Maroc. Les Domaines Régionaux et Leur Evolution Structurale,” PUMAG Edition, Marrakech, 1994.
[19] M. Gigout, “Etude Géologique de la Meseta, Maroc Occidental, Arriere-Pays de Casablanca, Mazagan et Safi),” Trav. de l’Ins- titut Sc. Chérifien, Maroc, No. 1.
[20] J. Destombes and A. Jeannette, “Etude Géotechnique de la Région de Casablanca,” Notes et Mémoires du Service Géologique du Maroc, No. 130, 1956.
[21] M. Ouadia, “Les Formations Plioquaternaires Dans le Domaine Mésétien Occidental du Maroc Entre Casablanca et Safi: Géomorphologie, Sédimentologie, Paléo environnements Quaternaires et Evolution Actuelle,” Thesis, University Rabat, Rabat, 1998.
[22] A. El Attari, “Etude Lithostratigraphique et Tectonique du Paléozoique du Mole Cotier (Meseta Occidentale, Maroc),” Thesis, University Rabat, Rabat, 2001.
[23] Direction Générale de l’Hydraulique, “Protection de la Nappe Aquifere des Quartzites de la Chaouia a L’Aval de la Décharge de Lissasfa,” 1991.

Copyright © 2024 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.