Urban waste landfill planning and karstic groundwater resources in developing countries: the example of Lusaka (Zambia)

Waele, Jo Hilaire Agnes De; Nyambe, Imasiku; Gregorio, Alessandra Di; Gregorio, Felice Di; Simasiku, S.; Follesa, R.; Nkemba, S.

doi:10.1016/j.jafrearsci.2004.07.014

Cited by 17 publications

(12 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result the population suffers from many waterborne diseases with cholera being the most frequent that killed many people in 2004 [18]. Currently, there is a lack of information and understanding of 3 …”

Section: Introductionmentioning

confidence: 99%

Factors Influencing the Shallow Groundwater Quality in Four Districts with Different Characteristics in Urban Area (Douala, Cameroon)

Ketchemen-Tandia¹,

Boum-Nkot²,

Ebondji³

et al. 2017

GEP

View full text Add to dashboard Cite

This study examines groundwater samples from four areas under different conditions. Variations amongst the areas are due to the distinct topography, demographics, and socio-economic activities. A qualification of the groundwater using the following parameters; pH, electric conductivity and nitrate analysis yielded results depicting the deplorable state of the unconfined aquifer; which is even worst in the densely populated and low-lying areas. These unfavorable conditions are present in the older districts (Bependa and Ndogbong) compared to the younger and least populated (urbanized) districts (Ndogpassi and Logpom). The poor quality of groundwater could be due to contamination by sewage from latrines and surface discharges. Nevertheless, nitrate contents (>241 mg/l) in these districts indicate that pollution has not reached the alarming levels observed in other West African cities (nitrates > 400 mg/l). Relatively low concentrations of nitrate in groundwater of the studied areas could be due to volatilization phenomena common in the unconfined aquifers in Douala. We however remarked that most of the studied wells are not used as drinking water, because they present particular health risks to humans.

show abstract

Section: Introductionmentioning

confidence: 99%

Factors Influencing the Shallow Groundwater Quality in Four Districts with Different Characteristics in Urban Area (Douala, Cameroon)

Ketchemen-Tandia¹,

Boum-Nkot²,

Ebondji³

et al. 2017

GEP

View full text Add to dashboard Cite

show abstract

“…In a study by Okonkwo et al [43] in South Africa, Pb, Cd, Cu and Zn pollution in Thohoyandou rivers was attributed to the sewage treatment plant, waste dumping and the use of fertilizers and pesticides that contain Pb and Cd on surrounding farms. Similarly, Hg (trace -0.013 mg/l) contamination in groundwater across Lusaka City in Zambia was attributed to urban waste [60]. Of particular concern is a recent report by Muchuweti et al [34] in Harare (Zimbabwe), in which high concentrations (mg/kg) of Pb (6.77), Cd (3.68), Hg (0.05), Zn (221.0), Cr (16.1) and Cu (111.0) were found in a locally consumed vegetable (Tsunga) due to the use of sewage sludge in agricultural soils.…”

Section: Southern Africamentioning

confidence: 99%

Current Levels of Heavy Metal Pollution in Africa

2010

View full text Add to dashboard Cite

ABSTRACT. Studies of environmental pollution in Africa indicate that toxic metal pollution has reached unprecedented levels over the past decade. Human exposure to toxic metals has become a major health risk on the continent and is the subject of increasing attention from national and international environmentalists. This paper reviews data from the past decade on environmental pollution in Africa and highlights countries where most heavy metal pollutions have been reported. Characteristics of heavy metal pollution in North, West, East and Southern regions of Africa have been described, as have major sources of pollution in the different regions. This review summarizes the sites where most of the heavy metal pollution has been reported in Africa and, where applicable, presents reported levels of pollution in different environmental compartments in the context of internationally acceptable limits. Contaminations in fish and food animals as well as impacts of heavy metal pollution on humans are also described.KEY WORDS: Africa, environment, heavy metals, pollution.J. Vet. Med. Sci. 72(10): 1257-1263, 2010 For many years, Africa was considered safe from heavy metal pollution [6]. However, rapid population growth and high urbanization rates have resulted in a recent expansion of cities in the absence of proper planning and without adequate waste disposal facilities [25]. Consequently, solid waste management has become a major challenge in many African countries, as waste production exceeds capacities for collection and disposal by local authorities [49]. As observed by the United Nations Centre for Human Settlements (UNCHS) [56], only one-third of the solid waste generated in urban areas across Africa is collected, and of that, only 2% is recovered and recycled. Furthermore, use of leaded gasoline [36], fugitive dusts [13], indiscriminate dumping and burning of toxic waste, including nickel/cadmium-based batteries, due to weak pollution legislation has worsened heavy metal pollution on the continent [22].Recently, the United Nations Environment Program (UNEP) Global Environment Outlook (GEO) 4 [58] noted that Africa continues to be at risk from hazardous and electronic waste dumping due to inadequate monitoring capabilities and institutional mechanisms for managing such waste. There are limited resources for environmental management in most African countries, as most developmental programs are focused on economic growth and industrialization [52]. As a result, industrial expansion and increased extraction of natural resources have resulted in widespread heavy metal pollution [3,59].According to a comprehensive study on the environmental burden of disease by the World Health Organization (WHO) [62], environmental risk factors account for a quarter of the total burden of disease and 2.97 million human deaths every year in Africa. Since toxic metals constitute serious health hazards, the extent of toxic metal contamination of the African environment has been the subject of considerable interest. Although improvements i...

show abstract

“…Health problems as a result of microbiological contamination have already been observed widely in the city and treatment was identified as being insufficient, in particular for the many private boreholes and shallow wells [39]. According to De Waele et al [40], there are 3000-4000 private boreholes in Lusaka, most of which are not submitted to satisfactory monitoring. The water levels are threatened as well, by both over-abstraction following population growth and lack of rainfall; consequently abstraction is exceeding recharge [38,41].…”

Section: Study Areamentioning

confidence: 99%

“…While water levels have been neglected in the last years [40], they are currently monitored by four Water Trusts, of which one has been recording them twice daily for less than a month, two have been recording them weekly since recent borehole completion and one measures them weekly with a dipper provided during the previous year. Another four Water Trusts have identified water level monitoring as a necessity.…”

Section: Water Levels and Quality Monitoringmentioning

confidence: 99%

Groundwater Data Management by Water Service Providers in Peri-Urban Areas of Lusaka

Nussbaumer

Sutton

Parker

2016

Water

View full text Add to dashboard Cite

Abstract:Groundwater management by water service providers in Lusaka, Zambia, includes borehole siting, drilling and on-going monitoring. Semi-structured interviews were conducted with Lusaka Water and Sewerage Company (LWSC) and devolved Water Trust managers, in order to assess their needs and collect their suggestions to improve data management. The research found that both the Water Trusts and LWSC lacked the capacity to fully utilize hydrogeological information. Prior to the research, none of the ten Water Trusts collected water level data. Four have started to collect data recently and another four have plans to, and they would like to share this data more widely.

show abstract

Urban waste landfill planning and karstic groundwater resources in developing countries: the example of Lusaka (Zambia)

Cited by 17 publications

References 0 publications

Factors Influencing the Shallow Groundwater Quality in Four Districts with Different Characteristics in Urban Area (Douala, Cameroon)

Factors Influencing the Shallow Groundwater Quality in Four Districts with Different Characteristics in Urban Area (Douala, Cameroon)

Current Levels of Heavy Metal Pollution in Africa

Groundwater Data Management by Water Service Providers in Peri-Urban Areas of Lusaka

Contact Info

Product

Resources

About