The Water-Waste Nexus

The management of water resources and waste is amongst the major challenges facing the majority of urban environments within developing nations due to the rapid population growth and urbanisation as well as improved lifestyles. The Greater Harare Metropolitan Province is not spared by these management challenges. This chapter proposes a number of scenarios that could be implemented in the short to medium terms to address these challenges within the GHMP from a water-waste nexus approach. The water-waste nexus approach is anticipated to significantly reduce the human health impacts and environmental impacts, specifically the water resources pollution which is responsible for the increase in cost of potable water production subsequently resulting in intermittent potable water supply in the GHMP. The study regards the recovery of energy from the waste generated in the GHMP as an integral component of the approach with the energy recovered used for water, wastewater, and waste treatment.

Water as a Social Generator: Activating social and water security in residential Kilbirnie

<p>Residential streets make up a large proportion of accessible public space while failing to facilitate community activity. These streets carry a relatively low volume of traffic, yet are standard in form. This factor in conjunction with the self-contained nature of houses in residential areas results in a lack of social capital in areas with a large amount of social potential. The suburbs of Kilbirnie on the Rongotai isthmus in Wellington have been selected as the site due to the potential of the streets; in particular due to their width and mono-functionality. The five sites that have been selected have potential far beyond their current use and are going to be used as a design case study to explore pre-emptive disaster design in conjunction with providing social amenities. The streetscape within the identified site is excessively wide with a large amount of on-street parking. This thesis argues that this extra, underutilised space has the potential to be adapted into an aesthetically pleasing, functional community amenity. The designs will break up the monotonous nature of the residential streets and create a hub for surrounding residents through the exploration of programme and form. The introduction of water storage infrastructure as a programme will pre-emptively service the suburb in the event of a disaster. The likelihood of the potable water supply being severed to both the Wellington CBD and to the Rongotai Isthmus and Miramar Peninsula is high due to the location of the service pipes in relation to the dominant fault lines in the suburb. The study proposes exploring programmes which challenge people’s perception of ownership of public land and amenity. Re-allocating and prioritising parts of street space to provide amenity for surrounding residents has the potential to initiate a change from monotone, mundane functionality into a hub of social activity, community building and disaster resilience. The design methodology uses precedents which employ techniques that can be used to challenge the norm and provide a design outcome which creates engaging residential spaces.</p>

Water as a Social Generator: Activating social and water security in residential Kilbirnie

<p>Residential streets make up a large proportion of accessible public space while failing to facilitate community activity. These streets carry a relatively low volume of traffic, yet are standard in form. This factor in conjunction with the self-contained nature of houses in residential areas results in a lack of social capital in areas with a large amount of social potential. The suburbs of Kilbirnie on the Rongotai isthmus in Wellington have been selected as the site due to the potential of the streets; in particular due to their width and mono-functionality. The five sites that have been selected have potential far beyond their current use and are going to be used as a design case study to explore pre-emptive disaster design in conjunction with providing social amenities. The streetscape within the identified site is excessively wide with a large amount of on-street parking. This thesis argues that this extra, underutilised space has the potential to be adapted into an aesthetically pleasing, functional community amenity. The designs will break up the monotonous nature of the residential streets and create a hub for surrounding residents through the exploration of programme and form. The introduction of water storage infrastructure as a programme will pre-emptively service the suburb in the event of a disaster. The likelihood of the potable water supply being severed to both the Wellington CBD and to the Rongotai Isthmus and Miramar Peninsula is high due to the location of the service pipes in relation to the dominant fault lines in the suburb. The study proposes exploring programmes which challenge people’s perception of ownership of public land and amenity. Re-allocating and prioritising parts of street space to provide amenity for surrounding residents has the potential to initiate a change from monotone, mundane functionality into a hub of social activity, community building and disaster resilience. The design methodology uses precedents which employ techniques that can be used to challenge the norm and provide a design outcome which creates engaging residential spaces.</p>

Lead and coliform contaminants in groundwater sources in peri-urban areas of Makurdi, Nigeria

Benue State has one of the most populated state capitals in North-central Nigeria, suffering from acute water shortage despite River Benue that runs through the town. The combined effect of inadequate potable water supply and the polluted nature of the River has pushed the populace, especially peri-urban residents, to resort to water from wells and boreholes. This study investigates the possible contamination by lead, and some waterborne pathogenic bacterial burden of water from wells and boreholes. Four peri-urban areas of Makurdi, Nigeria, were selected for the study. A total of 768 samples were randomly collected, 192 from each location.The presence of lead was quantified using Atomic Absorption Spectrophotometer, while the bacteriological assessment was done using Multiple Tube Fermentation Techniques and biochemical tests. The mean value for lead at the different sampling sites ranged from 0.030 to 0.079mg/L. The mean value of lead in all the wells and locations was significantly (P<0.05) higher than the WHO recommended values of 0.01 mg/L for lead. Five species of pathogenic bacteria were isolated and identified, namely E. coli, Salmonella subsp 3B, Enterobacter pagglomeran complex, Klebsiella pneumoniae and Citrobacter freundii. The mean value for E. coli at the different well types ranged from 0.000 to 0.401 CFUX10 and were significantly (P<0.05) different. Water from wells in Makurdi had high lead concentration as well as enteric pathogenic bacteria that render it not fit for human consumption. It is recommended that regulatory agencies should protect wells through the development of relevant guidelines to address the risk of water contamination.

THE EFFECT OF INADEQUATE ACCESS TO POTABLE WATER ON THE HEALTH OF THE PEOPLE IN THE WA MUNICIPALITY OF GHANA

Accessibility to safe drinking water is regarded as a fundamental human right since it is essential to preserving healthy livelihoods and the basic human dignity of all human beings. The study examined the effect of inadequate potable water supply on the health of the people in the Wa Municipality of Ghana. Findings of the study revealed that water related diseases are very common in the municipality due to the inadequate supply of potable water. About 55% of respondents, mentioned schistosomiasis as the top disease burden in the area. Again, the analysis of data on water provision and accessibility in the study suggested that most of the residents of the Municipality precisely 69.2% covered distances more than the standard distance of 1km stipulated by World Health Organization in search for potable water. The impacts of the time spent and distance traveled to acquire water in the Municipality were largely experienced by children and women, owing to the fact that in Ghana, water collection is considered to be the primary duty of children and women. Based on the findings the study recommends that more boreholes should be provided in the Wa Municipality to enable the residents have easy access to potable water supply. KEYWORDS: Ghana, Wa Municipality, Potable water accessibility.

Village Sanitation System for Village

Sanitation is important of few years development goals which covers the important aspects of management of human excreta, domestic and industrial wastewater and hazardous substances .Hence, this project focuses on a selected rural area to plan a suitable water supply scheme in accordance with their demands and requirements. It hasnt be feasible to cover all villages with piped water supply because of various constraints such as Scattered and inaccessible nature of villages, Nonavailability of nearby water sources. The project also covered planning of facilities to maintain better sanitation and beautification of surrounding .Water is important and precious as it fulfils the basic necessity of life. It is necessary that the water used must be good and free from unwanted impurities or harmful toxic chemical compounds or bacteria More than 80 % of Indian population lives in rural areas, but only few of them have some form of potable water supply. It hasn’t be feasible to cover all villages with piped water supply because of various constraints such as Scattered and inaccessible nature of villages, Non- availability of nearby water sources.

Potable Water Scarcity and Options for Effective Provision in Limbe Municipality, Southwest Region, Cameroon

Continuous potable water scarcities in Limbe municipality if not well manage and ensure a regular provision of it may lead to many disastrous consequences to the massive growing population of this municipality. Lack of safe drinking water is a severe crisis in Limbe and Cameroon due to poor management strategies employed by the water management bodies involved. The study investigated the implications of water scarcity in Limbe municipality and the options for effective provision of potable water. A questionnaire survey was carried out. About 300 questionnaires were administered in three localities of Limbe to investigate the present status of water scarcity and its impacts on the local communities. The results show an increasing rate of potable water scarcity in the municipality. About 51% of the respondents indicated that inadequate storage facilities are the main caused of water scarcity in the town. In contrast, 26% and 23% of the respondents indicated that inadequate technology and low level of education are other reasons contributing to potable water scarcity in Limbe municipality. Many people in the municipality depend on untreated water sources, resulting in the contraction of many diseases like dysentery and diarrhea as prime waterborne health risks. We suggest options like installing large water safety tanks in all the localities of Limbe municipality. Furthermore, implementing a joint monitoring team to ensure that effective potable water treatment and supply is being done and the bodies involved in water management like the Cameroon Water Utilities Corporation (CAMWATER) need to initiate a platform for multi-stakeholder dialogue, networking and social learning essentially for building trust on how to manage potable water supply in the municipality better.

Persistent Challenges of Potable Water Supply, Implications and Mitigation Strategies in Limbe, Cameroon

Persistent challenges of potable water supply and its implications hinder man’s progress in Limbe municipality. The growing population of Limbe Municipality faces increasing challenges of potable water supply with lots of implications. And the Cameroon Water Utilities Corporation (CAMWATER) with the local communities involved in potable water management is unable to meet up with this increasing demand. This has led to the challenges of potable water supply in Limbe municipality which is very frustrating to water consumers. This present study sought to examine the challenges of potable water supply and its implications in Limbe. A combination of research methods (desk review, interviews and reconnaissance field appraisal) have been used in this study. Our findings revealed that increasing population and poor management of potable water supply were the major problems. In the methods utilized, a community based cross-sectional survey was conducted from March to December 2020 using quantitative and qualitative approaches. Wealth Health Organization checklist was used for observation around catchments, then the assessment of water supply challenges was done with a semi quantitative approach. And 200 questionnaires were administered where qualitative data was collected through Focus Group Discussions and in-depth interviews. The results obtained from the 7 water catchments assessed indicated that 50% of the water supply challenges were as a result of the increasing population in Limbe municipality. Meanwhile 30% stated that poor management of potable water supply by the authorities concern is another reason of persistent challenges of potable water supply in Limbe. While 20% were of the opinion that the challenges of potable water supply is as a result of anthropogenic activities near water catchments leading to a progressive reduction in water volume. An integrated potable water management team is needed and a periodic monitoring of these catchment in order to reduce this persistent challenges.