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Rainwater harvesting :a sustainable practice for low-income housing in South AfricaEnninful, Josephine Peace 04 February 2014 (has links)
This report gives an overview on issues surrounding sustainable water management practices, specifically, rainwater harvesting (RWH), for low income households in South Africa. The agenda for sustainable development in South Africa has over time, downplayed the importance of Rainwater Harvesting. However, the South African Region is already a water scarce area, experiencing environmental and other threats to its limited water resources such as rapidly increasing demand for water from a growing population and economic sectors.
A purely qualitative research method was used to conduct this Research Report which demonstrated that Rainwater Harvesting across the world can bring immense socio-economic and environmental benefits such as increased food security, improved sanitation and quality of the natural environment. A key question of this Research Report was to establish whether Rainwater Harvesting could be feasible for use in Low-income households in South Africa. This research revealed that the DoH and DWAF can constitute projects for Rainwater Harvesting for Low-income households in their programmes.
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Socio-economic factors determining in-field rainwater harvesting technology adoption for cropland productivity in Lambani Village : a case study of Thulamela Local Municipality of the Vhembe District in Limpopo ProvinceBadisa, Khumo Terezan January 2011 (has links)
Thesis (MSc. (Agricultural Economics)) -- University of Limpopo, 2011 / In-field rainwater harvesting technology is the technique that combines the
advantages of water harvesting, no till, basin tillage and mulching on high drought
risk clay soils. It reduces total runoff to zero, and also considerably reduce surface
evaporation. The scarcity of agricultural water is increasing at a faster rate than for
other sectors in Limpopo Province. Sufficient, clean drinking water is essential to life,
but millions of people throughout the world including South Africa continue to have
no access to this basic necessity.
This study aimed at investigating the extent and nature of adoption of in-field
rainwater harvesting technology by households in Lambani village of Limpopo
Province. The main objectives of this study were to identify factors determining the
in-field rainwater adoption technology for cropland productivity in Lambani village
and to determine the extent to which in-field rainwater harvesting adoption influences
cropland productivity in Lambani village. Simple random sampling technique was
used to select 70 farmers in Lambani village of Limpopo Province. Data was
collected using a structured questionnaire.
Descriptive statistics, logistic regression model and linear regression model were
used to analyse the data. Descriptive statistics was used to describe the
characteristics of households and the nature of Lambani village, and logistic
regression model was used to investigate factors that determine the adoption of infield
rainwater harvesting technology, while linear regression model was used to
determine the extent to which in-field rainwater harvesting influence the cropland
productivity in Lambani village.
The results from the logistic regression model indicate that 5 variables out of 10
variables are significant in explaining farmers’ adoption decision. Land size, access
to financial service, access to information and contact with extension officer are
some of the variables that have significantly positive effects on the adoption of infield
rainwater harvesting technology, while hired labour has significantly negative
correlation with adoption. Variables such as household size, level of education, age
of the household, level of income and the main water source do not significantly
influence adoption of in-field rainwater harvesting. This information will help prioritize
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The feasibility of rainwater and stormwater harvesting within a winter rainfall climate context: a commercial building focusViljoen, Nina Susara 18 November 2014 (has links)
Cape Town, South Africa, falls within a winter rainfall region, making it difficult to assess the feasibility of rain- and stormwater harvesting. The reason for this is because the region’s high water demand period coincides with the low rainfall summer season, thereby limiting the availability of this alternative water resource when most needed. During this study, rainwater harvesting for toilet flushing purposes, collected from roof surfaces, was practically assessed by means of inserted flow meters at a pilot study site in Kommetjie, Cape Town. The combined and single system roof- and land surface runoff yields and savings of commercial buildings within the Kommetjie business area, were also theoretically assessed by making use of a mathematical roof- and land surface runoff model specifically developed during this study. The statistical testing of the hypotheses statements relating to the pre- and post-harvesting savings at the pilot study building, compared against the average actual municipal water usage, were performed. Hypotheses testing were also performed in order to compare the theoretical rain- and stormwater runoff yields for the commercial business area against the average actual municipal water consumption. The conclusions drawn from this study indicated that valuable potable water, as well as related financial savings, can be achieved within a winter rainfall region, thereby making rain- and stormwater harvesting a feasible option for commercial businesses in Cape Town. / Environmental Sciences / M.Sc. (Environmental Management)
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The feasibility of rainwater and stormwater harvesting within a winter rainfall climate context: a commercial building focusViljoen, Nina Susara 18 November 2014 (has links)
Cape Town, South Africa, falls within a winter rainfall region, making it difficult to assess the feasibility of rain- and stormwater harvesting. The reason for this is because the region’s high water demand period coincides with the low rainfall summer season, thereby limiting the availability of this alternative water resource when most needed. During this study, rainwater harvesting for toilet flushing purposes, collected from roof surfaces, was practically assessed by means of inserted flow meters at a pilot study site in Kommetjie, Cape Town. The combined and single system roof- and land surface runoff yields and savings of commercial buildings within the Kommetjie business area, were also theoretically assessed by making use of a mathematical roof- and land surface runoff model specifically developed during this study. The statistical testing of the hypotheses statements relating to the pre- and post-harvesting savings at the pilot study building, compared against the average actual municipal water usage, were performed. Hypotheses testing were also performed in order to compare the theoretical rain- and stormwater runoff yields for the commercial business area against the average actual municipal water consumption. The conclusions drawn from this study indicated that valuable potable water, as well as related financial savings, can be achieved within a winter rainfall region, thereby making rain- and stormwater harvesting a feasible option for commercial businesses in Cape Town. / Environmental Sciences / M.Sc. (Environmental Management)
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