Socio-economics of water quality as a development catalyst in poor urban slums
Lack of access to safe water supply and adequate sanitation services is directly linked to the livelihoods and incomes of the urban poor, with impacts on health and ability to earn, thus exacerbating poverty. This study assesses the socio-economic burden of water quality in a poor urban slum (Tripoli, Lebanon) in terms of increased morbidity and premature mortality using various econometric tools. Results indicate need for targeted interventions at the household and slum levels. Based on an economic benefit analysis, this research can be used by stakeholders to justify infrastructure investment and to pressure decision-makers towards the same purpose.
Autor(es) : Maroun, Rania, Mawla, Darine, El-Fadel, Mutasem
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Development of a groundwater quality index for seawater intrusion in coastal aquifers
Coastal aquifers are increasingly threatened by seawater intrusion due to increased urbanization, groundwater exploitation, and global sea-level rise. Pattern diagrams, which constitute the outcome of several hydro-geochemical processes, have traditionally been used to characterize vulnerability to seawater intrusion. However, the formats of such diagrams do not facilitate the geospatial analysis of groundwater quality, thus limiting the ability of spatio-temporal mapping and monitoring. This raises the need to transform the information from current pattern diagrams into a format that can be readily used under a GIS framework to define vulnerable areas prone to seawater intrusion. In this study, a groundwater quality index specific to seawater intrusion (GQISWI) was developed for the purpose of aggregating data into a comprehensible format that allows spatial analysis. The index was evaluated with data from various coastal regions worldwide and then applied at a pilot karstic aquifer along the eastern coast of the Mediterranean Sea.
Autor(es) : Tomaszkiewicz, M., Abou Najm, Majdi, El-Fadel, M.
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Saltwater intrusion in karst aquifers along the Eastern Mediterranean
Concentration data exhibited large spatial variability in salinity levels across districts with Total Dissolved Solids (TDS) levels ranging from a low of 400 to as high as 29,000 ppm. Groundwater chemistry, ionic relationships, hydro-chemical diagrams and groundwater quality indices (GQI) were used to delineate saltwater intrusion (SWI) hotspots. Results of this study can help assess the extent and intensity of SWI and improve existing policy planning and management tools for coastal aquifers. Despite widespread studies of SWI, its investigation in karst aquifers remains limited, particularly in view of the challenges in understanding, characterization, as well as modeling of karst aquifers.
Autor(es) : El-Fadel, Mutasem, Rachid, Grace, Alameddine, Ibrahim, Abu Najm, Majdi
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Lenguaje: Inglés
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Environmental health risks in disadvantaged urban slums
This paper assesses diarrhea occurrence in two urban slums to identify salient factors influencing case prevalence. Rapid urbanization in settings of poor economic performance and governance has increased the number of people living in urban slums to about 1 billion people worldwide. In this study, water quality analysis showed contamination at the household level due primarily to the location of water storage tanks. Significant difference in diarrhea cases in both study areas correlated with the educational level of household head, financial status, type of water storage tank and cleaning frequency, along with adoption of measures to treat water, or use bottled water.
Autor(es) : Maroun, R., El-Fadel, M.
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GIS-based assessment for the development of a groundwater quality index towards sustainable aquifer management
This study aims at developing Groundwater Quality Indices (GQIs) that constitute a reliable tool in defining aquifer vulnerability. For this purpose, water quality sampling campaigns were conducted on 60 groundwater wells during most vulnerable periods of early and late summer to ensure the representativeness of the targeted GQI under worst case conditions. The samples were tested for various water quality indicators, which were then used to develop the GQIs through GIS-based mapping with spatial geostatistical analysis. The results contribute in filling a gap in GQI definition and form a basis for planning effective water quality management towards sustainable exploitation of groundwater resources particularly during summer periods when recharge is limited.
Autor(es) : El-Fadel, M., Tomaszkiewicz, M., Adra, Y., Sadek, S., Abou Najm, Majdi
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Lenguaje: Inglés
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Determinants of diarrhea prevalence in urban slums : a comparative assessment towards enhanced environmental management
This study relies on a comparative assessment of diarrhea occurrence in two urban slums to identify salient factors influencing case prevalence. Primary data were collected from both areas using a structured closed-ended questionnaire coupled with bottled and public water quality sampling and analysis at households reporting diarrhea cases. The water quality analysis showed contamination at the household level due primarily to the location of water storage tanks, as well as in some brands of bottled water due to lack of enforcement of source monitoring. Descriptive statistics and chi-square distribution tests revealed significant difference in diarrhea cases in both study areas which was correlated with the educational level of household head, financial status, type of water storage tank, and corresponding cleaning frequency as well as the adoption of measures to treat water or the use of bottled water.
Autor(es) : El-Fadel, M., Maroun, R., Quba'a, R., Mawla, D., Sayess, R., Massoud, M.A., Jamali, I.
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Public perception and economic implications of bottled water consumption in underprivileged urban areas
This paper presents a comparative assessment
of public perception of drinking water quality in
two underprivileged urban areas in Lebanon and
Jordan with nearly similar cultural and demographic
characteristics. It compares the quality of bottled water
to the quality of the drinking water supplied through the
public network and examines the economic implications
of bottled water consumption in the two study areas.
Participants' perception of the quality of drinking water
provided via the public network was generally negative,
and bottled water was perceived to be of better quality in
both areas, thus affecting drinkingwater preferences and consumption patterns. The results reveal that the quality
of bottled water is questionable in areas that lack enforcement
of water quality standards, thus adding to the
burden of an already disadvantaged community. Both
areas demonstrated a considerable cost incurred for
purchasing bottled water in low income communities
reaching up to 26 % of total income.
Autor(es) : Massoud, M.A., Maroun, R., Abdelnabi, H., Jamali, I.I., El-Fadel, M.
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Social cost benefit analysis of water and sanitation improvement in a poor urban slum
A health-based socio-economic assessment as well as side-by-side social cost benefit analysis is depicted in this visual synopsis of research carried out in a suburban slum in Tripoli, Lebanon. 88% of reported diarrheal cases are attributed to unsafe water supply, inadequate sanitation and hygiene, with cases distributed uniformly throughout the year. The poster includes field observations, and a selection of alternative interventions with estimated costs. Installing rooftop tanks and replacing water piping at the household level are the most economically viable interventions.
Autor(es) : El‐Fadel, M., Maroun, R., Alameddine, M., Mawla, D.
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Lenguaje: Inglés
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