The Casablanca landfill is one among many uncontrolled dumping sites in Morocco with no bottom liner. About 4000 tons/day of solid wastes from mixed urban and industrial origins are placed directly on the fifteen old sandstone quar ries. At the site of this landfill, the groundwaters circulate deeply (< 10 m ) in the fractured aquiferous quartzites, the site has never been sealed before its opening. The aim of this study is the characterization the groundwater quality around the landfill, to delimit the contaminated zone and the factors controlling the extent of groundwater contamination. To evaluate groundwater pollution due to this landfill, piezometric level and geochemical analyses have been carried out on 19 wells. The results of geochemical analyses show an important qualitative degradation of the groundwater, especially in the parts situated in the down gradient area and in direct proximity to the landfill. In these polluted zones, we have observed the following values: higher than 11 mS/cm in electric conductivity, 1400 mg/L in bicarbonates, 275 mg/L in chemical oxygen demand, 2616 and 100 mg/L respectively in chlorides and sulfate, 269.5 mg/L in nitrates, 50 - 100 mg/L in cadmium, and 40 - 230 μg/L in chromium. These concentrations widely exceed the standard values for potable and irrigation water. Several determining factors in the evolution of groundwater contamination have been highlighted, such as: depth of the water table, permeability of unsaturated zone and lineaments, effective infiltration, absence of a system for leachate drainage. So, to reduce the pollution risks of the groundwater, it is necessary to set a system of col lection, drainage and treatment of landfill leachates and to emplace an impermeable surface at the site of landfill, in order to limit the infiltration of leachate.
M. Djouka, “The Problem of Solid Wastein Abidjan,” Techniques, Sciences et Méthodes—L’Eau 5, 1988, pp. 285-290.
C. Desachy, “The Wastein 1994,” Techniques, Sciences et Méthodes—L’Eau 11, 1994, pp. 603-609.
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. doi:10.1016/S0883-2927(00)00082-2
P. T. Williams, “Waste Treatment and Disposal,” 2nd Edition, John Wiley & Sons, Hoboken, 2005. doi:10.1002/0470012668
U. K. Singh, M. Kumar, R. Chuhan, P. K. Jha, A. L. Ra manathan 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
A. C. Bennani, “Composting: Assessment and Prospects for Actionat the National Level, Morocco,” Technique, Sciences et Méthodes—L’Eau 5, 1984, pp. 285-290.
E. M. Naifar, “The current situation of Household Waste Disposal of Rabat. Study of the Impact of Akrach landfill leachate on the Environment,” Thesis, University Rabat, Rabat, 1996.
S. Amhoud, “Contributions of Geology and Hydrogeo logy the Study of the Impact of the Akrech Landfill on Water Resources,” Thesis, University of Rabat, Rabat, 1997.
A. Ajir, “Solid Waste Management in Morocco: Problems and Development Approach,” Proceedings of International Symposium on Environmental Pollution Control and Waste Management, Tunis, 7-10 January 2002, pp. 740 747.
H. Chouaouta, “Regional Plan of Waste Management, Tanger-Tétouan,” MATEE et GTZ, Projet Gestion de l’Environnement, 2002.
RGPH, “General Census of Population and Housing,” 2004.
A. Ajir, “Solid Waste Management in Morocco,” National Household Waste Program, 1st Expo Andalusia, 2009.
General Directorate of Hydraulics, “Protection of Chaouia Quartzite Aquifer Downstream of the Lissasfa landfill,” 1991.
A. Fekri, “Impact de la Décharge de Médiouna sur les Ressources en Eaux Souterraines,” Thesis, University Hassan II Mohammedia, Casablanca, 2007.
F. Ozanne, “The Landfill Leachates, Point of Knowledge 1990,” L’Eau: Techniques Sciences et Méthodes Juin, 1990, pp. 289-312.
M. O. Rivett, D. N. Lerner and J. W. Liyod, “Chlorinated Solvents in UKAquifers,” Journal of Water and Management, Vol. 4, No. 3, 1990, pp. 242-250. doi:10.1111/j.1747-6593.1990.tb01385.x
A. Fekri, B. El Mansouri, O. El Hammoumi and C. Mar rakchi, “Impact of Casablanca Municipal Landfill on Groundwater Resources,” International Water Techno logy Journal, Vol. 3, 2012, pp. 210-216.
H. Chichaoui, “Waste Financing, Case of Casablanca,” Thesis, l’ISCAE, Morocco, 2008.
ECOMED, “The Realization and Operation of a Con trolled Landfillin Casablanca and Rehabilitation of Cur rent Mediouna Landfill,” Mémoire Technique Nouvelle Décharge, Rapport Inédit, Vol. 2B, 2007.
J. Destombes and A. Jeannette, “The Realization and Operation of a Controlled Landfill in Casablanca and Rehabilitation of Current Mediouna Landfill,” Notes et Mémoires du Service Géologique du Maroc, No. 130, 1956.
A. Piqué, “Geology of Morocco. Domains Regional and Structural Evolution,” PUMAG Edition, Marrakech, 1994.
M. Ouadia, “Plio-Quaternary Formations in the Western Meseta of Morocco between Casablanca and Safi: Geo morphology, Sedimentology, Quaternary Paleoenvironments and Current Developments,” Thesis, University Rabat, Rabat, 1998.
A. El Attari, “Etude Lithostratigraphique et Tectonique du Paléozo?que du M?1e C?tier (Meseta Occidentale, Maroc),” Thesis, University Rabat, Rabat, 2001.
A. Navarro, D. Bernard and N. Millot, “Les Problèmes de Pollution par les Lixiviats de Décharge,” Techniques, Sciences et Méthodes—L’Eau 3, 1988, pp. 541-545.
J. M. Blanchard, A. Navarro, P. H. Revin, J. Cyclewsky, S. Voyars and G. Pillard, “Les Machefers d’Incinération d’Ordures Ménagères II. Utilisation en Traitement des Lixiviats de Décharge,” Techniques, Sciences et Mé thodes—L’Eau 3, 1989, pp. 133-140.
G. Leclerc and A. Bonneau, “La Lixiviation: Source, Composition et Atténuation,” Eau du Québec, Vol. 15, No. 1, 1989, pp. 37-45.
D. N. Lerner and J. H. Tellam, “The Protection of Urban Groundwater from Pollution,” Water and Environment Management, Vol. 6, No. 1, 1992, pp. 28-37. doi:10.1111/j.1747-6593.1992.tb00735.x
M. El Fadel, A. N. Findikakis and J. O. Leckie, “Nu merical Modeling of Generation and Transport of Gaz and Heat in Sanitary Landfills. II. Model Application,” Waste Management and Research, Vol. 14, No. 6, 1996, pp. 537-551.
A. Chofqi, A. Younsi, E. K. Lhadi, J. Mania, J. Mudry and A. Veron, “Environmental Impact of an Urban Land fill on a Coastal Aquifer (El Jadida, Morocco),” Journal of African Earth Sciences, Vol. 39, No. 3-5, 2004, pp. 509-516. doi:10.1016/j.jafrearsci.2004.07.013
H. Khattabi, “The Interests of Study of Hydro-Geological and Hydrobiological Settings for Understanding Operation of Landfill Leachate Treatment of Etueffont (Belfort, France),” Thesis, University Franche Comté, Besan?on, 2002.
A. Marjoua, P. Olive and C. Jusserand, “The Origins of Salts in the Chaouia Aquifer Coast (Morocco),” Hydro chemistry, IAHS Publishing No. 244, 1997.
OMS, “Guidelines for Drinking-Water Quality,” Geneva, 1993.
H. Guessir, “Study of the Impact of Irrigation on the Raw Wastewater on the Physico-Chemical Quality of Soiland Groundwater, Sidi Bennour Region,” Thesis, University El Jadida, El Jadida, 1995.
E. K. Lhadi, M. Mountadar, A. Younsi, G. Martin and J. Morvan, “Nitrate Pollution of Groundwater Nearshore, El Jadida (Morocco),” Journal of hydrogeology, Vol. 3, 1996, pp. 21-33.
H. Tazi, “Solid Wastes: Study of Environmental Impact Assessment (Land, Groundwater) and Treatment by Com posting,” Thesis, University El Jadida, El Jadida, 2001.
M. E. Exner, R. F. Spallding and C. W. Lindeau, “Ground water Contamination and Well Construction in Southeast Nebraska,” Grounwater, Vol. 23, No. 1, 1985, pp. 26-34. doi:10.1111/j.1745-6584.1985.tb02776.x
A. Baun, S. D. Jensen, L. Bjerg, T. H. Christensen and N. Nyholm, “Toxicity of Organic Chemical Pollution in Groundwater down Gradient of a Landfill (Grindsted, Den mark),” Environmental and Technology, Vol. 34, 2000, pp. 647-1652.
M. A. Allus, “Thallium and Trace Metals as Pollutants: Chemometric Studies,” Edition Dar Al Jamahiriya for Publishing, 1990.
M. G. Miquel, “Effects of Heavy Metals in the Environ ment and Health,” Tome I, 2001.
G. DeKnudt and D. Leonard, “Cytogenic Investigations on Leucocytes of Workers from a Cadmium Plant,” Environmental Physiology & Biochemistry, Vol. 5, 1975, pp. 319-327.
R. D. Cameron and F. A. Koch, “Toxicity of Landfill Leachates,” Journal of Water, Vol. 52, 1980, pp. 760 769.
G. Blanchard, “Aspect of the Behavior of Organo-Metals and Metals in the Environment: Study of Particular de rivatives Lead,” Thesis, University of Rennes, Rennes, 1982.
R. Kerbachi and M. Belkacemi, “Characterization and Evolution of the Landfill Leachate of Oued Smar, Alger,” Techniques, Sciences et Méthodes—L’Eau 11, 1994, pp. 615-618.
S. C. Harpers, R. Manharan, D. S. Mavinic and C. W. Randall, “Chromium and Nickel Toxicity during the Bio treatment of High Ammonia Landfill Leachate,” Water Environment Research, Vol. 68, No. 1, 1996, pp. 19-24. doi:10.2175/106143096X127172
D. L. Jensen, A. Ledin and T. H. Christensen, “Speciation of Heavy Metals in Landfill-Leachate Polluted Ground water,” Water Research, Vol. 33, No. 11, 1999, pp. 2642-2650. doi:10.1016/S0043-1354(98)00486-2
ONEP, “Standard Moroccan of Water Quality for Human Consumption,” ONEP Edition, 1993.