Evaluation of Groundwater Pollution with Heavy Metals at the Oblogo No.1 Dumpsite in Accra, Ghana


  • Beedu Keelson Kodwo Department of Civil Engineering, Kaaf University College, Accra.


water balance model, landfill cover, landfill closure, waste disposal site, Ghana


The aim of this research study was to evaluate the groundwater pollution risks from heavy metal contaminants near the de-commissioned Oblogo No.1 dumpsite using a combination of USEPA leachate estimation and migration models. The Hydraulic Evaluation of Landfill Performance (HELP) model was used to determine leachate volumes from the base of the dumpsite whereas the Industrial Waste Evaluation Model (IWEM) was used to determine contaminant concentrations at groundwater wells located at various distances from the dumpsite. It was observed that there is a wide variation in the concentration of the contaminants measured at different sampling periods between 2004 and 2011. Pollution risks from chromium, lead, manganese, cobalt and zinc were determined to be very low since the simulated contaminant concentrations in the wells were less than the reference ground water concentrations. However, the concentrations of cadmium, copper and arsenic were determined to be high enough to constitute a potential risk to groundwater wells which are down-gradient of the dumpsite. It was also determined that the minimum buffer distance of 360 m specified in the Ghana Landfill Guidelines may not ensure adequate protection for groundwater wells located down-gradient of the Oblogo No.1 dumpsite.


“Ghana landfill guidelines,” Ghana Environmental Protection Agency, 2002.

D. K. Essumang, C. K. Adokoh, J. Afriyie, and E. Mensah, “Source assessment and analysis of polycyclic aromatic hydrocarbon (PAHs) at the Oblogo waste disposal sites and some water bodies in and around the Accra Metropolis of Ghana,” Journal of Water Resource and Protection, vol. 1, pp. 456-468, 2009.

J. Osei, S. K. Osae, J. R. Fianko, D. Adomako, C. Laar, A. K. Anim, S. Y. Ganyaglo, M. Nyarku, and E.S. Nyarko, “The impact of Oblogo landfill site in Accra-Ghana on the surrounding environment,” Research Journal of

Environmental and Earth Sciences, vol. 3, no. 6, pp. 633-636, 2011.

V. K. Nartey, E. K. Hayford, and S. K. Ametsi, “Analysis of leachates from solid waste dumpsites: A tool for predicting the quality of composts derived from landfills,” Journal of Environment and Earth Science, vol. 2, no. 11, pp. 8-20, 2012.

F. K. Nyame, J. Tigme, J. M. Kutu, and T. K. Armah, “Environmental implications of the discharge of municipal landfill leachate into the Densu River and surrounding Ramsar wetland in the Accra Metropolis, Ghana,” Journal of Water Resource and Protection, vol. 4, pp. 622-633, 2012.

D. Denutsui, T. T Akiti, S. Osae, A. O. Tutu, S. B. Arthur, J. E. Ayivor, F. N. A. Kwame, and C. Egbi, “Leachate characterization and assessment of unsaturated zone pollution near municipal solid waste landfill site at Oblogo, AccraGhana,” Research Journal of Environmental and Earth Sciences, vol. 4, no. 1, pp. 134-141, 2012.

H. M. Young, B. Johnson, A. Johnson, D. Carson, C. Lew, S. Liu and K. Hancock, “Characterization of infiltration rates from landfills: Supporting groundwater modeling efforts,” Environmental Monitoring and Assessment, vol. 96, pp. 283- 311, 2004.

E. Butow, E. Holzbecher, and E. Kob, “Approach to model the transport of leachates from a landfill site including geochemical processes,” Contaminant Transport in Groundwater, pp. 183–190, 1989.

USEPA, “Guide for industrial waste management,” http://www.epa.gov/epaoswer/non-hw/industd/index.htm, Dec. 12,

United Kingdom Environmental Agency, “Hydrogeological risk assessments for landfills,” http://www.environmentagency.gov.uk,

Dec. 15, 2013.

S. T. Ankrah, J. Holm, and E. Oppong, “Evaluation of landfill cover design options for the Greater Accra Metropolitan Area using the HELP Model,” BSc. Project dissertation, Department of Civil Engineering, Kaaf University College, Ghana, 2012.

Accra Metropolitan Assembly, “Rehabilitation, closure, bid evaluation, construction supervision and contract management of the Oblogo No.1 and Mallam No.1 dumpsites in Accra,” Draft Design Report, Second Urban Environmental Sanitation Project, Prepared by WasteCare Associates Ltd., Accra, Ghana, Aug. 2011.

BGR-GSD, “Environmental and Engineering Geology for Urban Planning in the Accra-Tema Area, 2003-2006,” Technical Reports and Maps, CDROM, Bundesanstalt für Geowissenschaften und Rohstoffe (BGR) and Ghana Survey Department (GSD), 2006.

T. H. Christensen, P. Kjeldsen, P. L. Bjerg, D. Jensen, J. B. Christensen, A. Baun, H. Albrechtsen, and G. Heron, “Biogeochemistry of landfill leachate plumes,” Applied Geochemistry, vol. 16, pp. 659-718, 2001.

P. R. Schroeder, C. M. Lloyd, N. M. Aziz and P. A. Zappi, “HELP Model User’s Guide for Version 3,” http://www.el.erdc.usace.army.mil/products/cfm, Dec. 15, 2013.

P. R. Schroeder, T. S. Dozier, P. A. Zappi, B. M. McEnroe, J. W. Sjostrom, and R. L. Peyton, “HELP Model Engineering Documentation for Version 3,” http://www.el.erdc.usace.army.mil/products/cfm, Dec. 15, 2013.

USEPA, “User’s Guide for the Industrial Waste Management Evaluation Model (IWEM),” http://www.epa.gov/osw/nonhaz/industrial/tools/iwem/, Dec. 15, 2013.

E. Safari, M. Soltani, A. Baghvand, and M. A. Abduli, “Selection of bottom liner for land disposal of industrial waste containing lead – Case study: Tabriz Petrochemical Complex,” Journal of Applied Sciences, vol. 7, no. 24, pp. 4053- 4056, 2007.

D. Park, N. C. Woo, and D. Chung, “Applicability of Industrial Waste Management Evaluation Model (IWEM) in Korea,” Journal of Soil and Groundwater Environment, vol. 17, no. 1, pp. 1-7, 2012.

USEPA, “Industrial Waste Management Evaluation Model (IWEM) Technical Background Document,” http://www.epa.gov/osw/nonhaz/industrial/tools/iwem/, Dec. 15, 2013.

A. O. Aderemi, A. V. Oriaku, G. A. Adewumi, and A. Otitoloju, “Assessment of groundwater contamination by leachate near a municipal solid waste landfill,” African Journal of Environmental Science and Technology, vol. 5, no. 11, pp. 933-940, 2011.

M. O. Odunlami, “Investigation of groundwater quality near a municipal landfill site (IGQMLS),” International Journal of Chemical Engineering and Applications, vol. 3, no. 6, pp 366-369, 2012.

T. W. Assmuth and T. Strandberg, “Groundwater contamination at Finnish landfills,” Water Air and Soil Pollution, vol.

, pp. 179-199, 1992.

P. Kjeldsen, P. L. Bjerg, K. Rugge, T. H. Christensen and J. K. Pedersen, “Characterization of an old municipal landfill as a groundwater pollution source: Landfill hydrology and leachate migration,” Waste Management Research, vol. 16, pp. 14-22, 1998.

O. S. Afolayan, F. O. Ogundele, and S. G. Odewumi, “Spatial variation in landfills leachate solution in urbanized area of Lagos State, Nigeria,” American International Journal of Contemporary Research, vol. 2, no. 8, pp. 178-184, 2012.

M. E. Stuart and B. A. Klinck, “Human risk in relation to landfill leachate quality,” British Geological Survey Technical Report, WC/99/17, British Geological Survey Keyworth, UK, 1999.

USEPA, “National primary drinking water standards,” EPA 816-F-03-016, http://www.epa.gov/safewater/, Dec. 16, 2013.

T. H. Christensen, P. Kjeldsen, H. J. Albrechtsen, G. Heron, P. L. Bjerg, and P. Holm, “Attenuation of landfill leachate pollution in aquifers,” Critical Reviews in Environmental Science & Technology, vol. 24, pp. 119-202, 1994.

A. Allen, “Containment landfills: the myth of sustainability,” Engineering Geology, vol. 60, pp. 3-19. 2001.

A. P. Butler, C. Brook, A. Godley, K. Lewin, and C. P. Young, “Attenuation of landfill leachate in unsaturated sandstone,” In Proc., Ninth International Landfill Symposium, Sardinia, 2003.

Water Resources Commission of Ghana, “Water Use Register 2011,” http://www.wrc-gh.org, Dec. 16, 2013.




How to Cite

B. K. Kodwo, “Evaluation of Groundwater Pollution with Heavy Metals at the Oblogo No.1 Dumpsite in Accra, Ghana”, Int. j. eng. technol. innov., vol. 4, no. 3, pp. 170–181, Jul. 2014.