With a global population about 7 billion people and their continued growth are pressuring global natural resources, in freshwater matter this pressure is altering both the river flows; timing season of water flows; and spatial patterns in order to meet human demands both in urban as rural areas. However, water stress in urban areas are increasing and expectations by 2050 are grim with a global urban development by 70 percent moreover urbanization rate expected by 2030 in Latin America is 80 percent, thus the water concerns because of high average water consumption 220 lpd, and water leakage by 29 percent in the third largest city of Ecuador Cuenca have motivated to perform this analysis. The analysis is based on a metabolic perspective in order to determine anomalies in the urban water cycle at household level for then apply one of the tools of stormwater management in short term such as harvesting rainwater to find how feasible can be this system both individually as communally in Cuenca urban area based on criteria of rainfall, roof surface, roof material, water average consumption, and costs; in order to generate social, economic, and environmental benefits. Moreover, give recommendations and strategies in mid and long term to get an Integrated Urban Water Management (IUWM) model that allow ensuring the enough natural resources, environmental health, and economic sustainability for current and future demands. The main problems in the urban water cycle are in a outdated urban water management because of water leakage in the delivery network and unsuitable water pricing as well as bad consumers habits; these are affecting economically the water enterprise; nonetheless these problems are not putting in risk freshwater resources, and infrastructure capacity to meet future demands but the implementation of harvesting rainwater systems both individual as community can allow water savings by 18 percent at household level, and by 11 percent in whole water production process at city level. Moreover, the implementation can generate 750.000 job positions both direct as indirect. Finally, the risk of floods can be mitigated due to, roughly 2.88 million m3 of runoff rainwater a year are not released on rivers. To conclude, economic losses are avoiding that this money can be used to improve and maintain the current infrastructures, and development socio-technical projects in order to get a more suitable water metabolism. In other hand, encourage a harvesting culture at household level is a good strategy in short term but its feasibility is related directly to five drivers of which four can be handled such as roof surface area, roof material, domestic water consumption, and costs; in order to get most efficient systems. Finally, there are more tools and strategies to get sustainable goals in short mid and long term through an Integrated Urban Water Management model, in order to urban dwellers can move from simply consumers to a status of suppliers and managers of resources.

No / This paper reflects on what is meant by interdisciplinary engagement in the context of two integrated urban water management research programmes in the UK and New Zealand. Different extents of interdisciplinary engagement in research teams are conceptualised on a continuum that ranges from rhetorical intentions to joint research. We discuss how interdisciplinary working in research programmes is shaped through the processes of bidding, research management and production of outputs. The paper concludes that if higher levels of interdisciplinarity are desired, they need to be specifically funded and planned for. In particular, funders may need to provide flexibility in relation to interdisciplinary outputs, which may be hard to specify at the start of a research programme.

In cities around the world, public water systems have increasingly come to be operated by private companies. Along with an internationally funded investment program to refurbish the dilapidated water infrastructure, private operations were tested also in Dar es Salaam, Tanzania. Only about a third of the households, however, are reached by the piped water system there; most households purchase water from those with pipe-connections or private boreholes. Thus, water distribution was informally privatized by way of water vending long before formal private sector participation began. This thesis explores individual and collective endeavors in water development, distribution, and access, along with the global and local influences that shaped the privatization exercise. With regard to the lease of Dar es Salaam’s water system, the institutional set-up has been found to mix the British and French models, having influenced the local situation through development assistance and conditionalities tied to loans. The institutional contradictions may have contributed to the conflictive cancellation of the lease arrangement. Due to the public utility company’s lack of operating capital and investment planning, infrastructure development has responded mainly to immediate individual demands, resulting in a spaghetti-like network and structural leakage. The long-standing under-performance and low coverage of the piped water system have forced many people to devise their own ways to access water. This thesis argues that the individually-devised artisan ways of water provisioning constitute the life-line of Dar es Salaam’s water system. Yet, they also undermine and divert resources away from the collectively-devised industrial form of piped water provision.

Thesis (MA)--Stellenbosch University, 2011. / ENGLISH ABSTRACT: This study investigated the extent of Water Sensitive Urban Design activities in the George municipality in the Western Cape Province, in South Africa. Water resource management in urban areas worldwide had become unsustainable with the widespread implementation of outsized infrastructure, environmental degradation and overuse of natural resources. The result was a concept called Integrated Urban Water Management (IUWM). IUWM encapsulates the entire water cycle from rainwater to surface water, groundwater and wastewater, as part of urban water management, and not as separate entities. There was worldwide response to IUWM, with the USA formulating Low-Impact Development (LID), the UK designing their Sustainable Urban Drainage System (SUDS), and New Zealand articulating Low Impact Urban Design and Development (LIUDD), all to improve urban water resource management. Australia responded with Water Sensitive Urban Design (WSUD). WSUD explores the design and planning of water infrastructural development in an urban setting, vital in Australian cities which experience continuous severe water shortage conditions. The WSUD approach aims to influence design and planning from the moment rainwater is captured in dams, treated, and reticulated to consumers, to the point of wastewater re-use, as well as stormwater use. Various techniques are specified as part of the WSUD approach namely: the installation of greenroofs, demand reduction techniques, stormwater management and the re-use of treated wastewater for irrigation and fire-fighting. These WSUD activities can be implemented from large-scale efforts with whole suburbs working together to manage stormwater by construction of wetlands, as well as small-scale change in design and planning, e.g., with household rainwater tank installation for irrigation and toilet flushing. With South Africa’s progressive legislation at a national, provincial and local municipal level, various WSUD activities can be implemented to aid and guide municipalities. The study aimed to investigate what type of WSUD activities the George municipality has implemented, and to what extent the activities had an impact on water consumption, since the drought in 2009. The reasons behind any lack of implementation were also explored. Proof of only eight WSUD activities implementation could be found. Water debtors’ data and bulk water data was sourced in order to determine the effect of the eight WSUD activities on water consumption. Bulk meter data could however not be used to correlate with the debtors’ data since readings from many bulk meters had not been recorded. Debtors’ data did prove however that the WSUD activities had a short-term impact on water consumption in the suburbs where it was implemented. The reasons given for non-implementation were not satisfactory. Recommendations are that the municipality should focus on better planning and implementation of diverse activities and that keeping records and data should be made a priority to determine any progress made. / AFRIKAANSE OPSOMMING: Hierdie studie ondersoek die omvang van die Water Sensitiewe Stedelike Ontwerp (WSUD) aktiwiteite in die George munisipaliteit in die Wes-Kaap, in Suid-Afrika. Waterhulpbronbestuur in stedelike gebiede in die wêreld het nie-volhoubaar geword met die grootskaalse implementering van buitenmaatse infrastruktuur, agteruitgang van die omgewing en die oorbenutting van natuurlike waterhulpbronne. Die gevolg was 'n konsep wat Geïntegreerde Stedelike Water Bestuur (IUWM) genoem is. IUWM omvat die hele watersiklus vanaf reënval, tot oppervlakwater, grondwater en afvalwater, as deel van die stedelike waterbestuur, en nie as aparte entiteite nie. Daar was 'n wêreldwye reaksie te IUWM, met die VSA se Lae-impak-Ontwikkeling (LID), die Verenigde Koninkryk se ontwerp van hul volhoubare stedelike dreineringstelsel (SUDS), en Nieu-Seeland se formulering van Lae-impak Stedelike Ontwerp en Ontwikkeling (LIUDD), om stedelike water hulpbronne beter te bestuur. Australië het reageer met Water Sensitiewe Stedelike Ontwerp (WSUD). WSUD verken die ontwerp en beplanning van waterbestuur infrastruktuur ontwikkeling, in 'n stedelike omgewing, waar dit noodsaaklik was in die Australiese stede wat deurlopende tekort aan water ervaar. Die WSUD benadering het ten doel om die ontwerp en beplanning te beïnvloed vanaf die oomblik reënwater in damme opgevang is, behandel, en aan verbruikers versprei word, tot by die punt van afvalwater hergebruik, sowel as stormwater gebruik. Verskeie tegnieke word verskaf as deel van die WSUD benadering, naamlik: die installering van “greenroofs”, wateraanvraagbestuur tegnieke, en stormwater gebruik en hergebruik van behandelde afvalwater vir besproeiing en brandbestryding. Hierdie WSUD aktiwiteite kan implementeer word vanaf grootskaalse pogings met die samewerking van hele voorstede met stormwater bestuur deur die konstruksie van die vleilande, sowel as kleinskaalse verandering in die ontwerp en beplanning by huishoudings, byvoorbeeld met reënwatertenk installasie vir besproeiing en toilet spoel. Met Suid-Afrika se progressiewe wetgewing op 'n nasionale, provinsiale en plaaslike munisipale vlak wat munisipaliteite steun en lei, kan die verskeie WSUD aktiwiteite ïmplementeer word. Die studie is gemik om ondersoek in te stel na watter tipe WSUD aktiwiteite deur die George-munisipaliteit implementeer word, en tot watter mate die aktiwiteite 'n impak gehad het op die water verbruik sedert die droogte in 2009. Die redes agter 'n gebrek aan implementering is ook ondersoek. Bewyse van implementering van net agt WSUD aktiwiteite kon gevind word. Data van die water debiteure en grootmaat water meters is verkry ten einde die effek van die agt WSUD aktiwiteite op die water verbruik te bepaal. Grootmaat water meter data kan egter nie gebruik word om te korreleer met die data van die debiteure aangesien die lesings van baie grootmaat water meters nie aangeteken is nie. Debiteure se data het egter bewys dat die WSUD aktiwiteite 'n korttermyn-impak op die waterverbruik in die voorstede waar dit geïmplementeer is gemaak het. Die redes gegee vir nieuitvoering is nie bevredigend nie. Aanbevelings is dat die munisipaliteit moet fokus op beter beplanning en implementering van diverse aktiwiteite en dat die hou van rekords en data prioriteit gemaak moet word om vas te stel of enige vordering gemaak is.

Questões de planejamento aliadas ao aumento da impermeabilização contribuem para a redução do amortecimento das águas, o que possibilita a ocorrência das enchentes urbanas. Assim, é imprescindível a adoção de instrumentos e ferramentas que permitam um adequado gerenciamento dos recursos hídricos, bem como de sua drenagem. Nesse sentido, o presente trabalho consistiu em propor e aplicar novas metodologias de medidas compensatórias não-estruturais como instrumentos de gestão das águas urbanas (Balanço Hídrico de Terceira Geração, \"IPTU Hidrológico\") em escala de lote urbano, de forma a gerar cenários prospectivos, que mostrem a influência da adoção de indicadores de pegada hídrica e de medidas estruturais da drenagem urbana no grau de neutralidade dos impactos no lote. A metodologia consistiu no dimensionamento e análises de custos das medidas estruturais (tanque de água e trincheira de infiltração) para um lote de 200 \'M POT.2\', a serem incorporadas ou não nas medidas não-estruturais (Balanço Hídrico de Terceira Geração e \"IPTU Hidrológico\"); que por sua vez, foram calculadas em função das componentes das águas urbanas, variáveis hidráulicas e hidrológicas. Ao final, foram formados 4 cenários em escala prospectiva atual (2010), 2025, 2050, 2075 e 2100: Global Orchestration, Order from Stregth, Adapting Mosaic, TechnoGarden e realizadas análises de sensibilidade das medidas não-estruturais em nível de escala de lote, bem como ponderações das componentes das águas urbanas para a obtenção dos valores monetários de IPTU. Por fim, foram extraídas justificativas pertinentes a tais medidas, com base em elementos técnicos, econômicos, sociais e ambientais de Águas Urbanas sob o contexto da Lei Federal de Saneamento Básico nº 11.445/07. / Planning\'s questions with the increase of impervious areas contribute to reduce the damping of water, allowing urban flooding\'s occurence. Thus, it\'s necessary to adopt instruments and tools that allow an appropriate management of water resources, as well as its drainage. In this sense, this paper proposed and implemented new methods of non-structural compensating measures as tools for urban water management (3rd Generation of Water Balance and \"Hydrological IPTU tax\") on urban scale in order to generate future scenarios that show the influence of the adoption of waterfootprint\'s indicators and structural measures in the neutrality of impacts in urban drainage. The methodology consisted in the design and cost analysis of the structural measures (water tank and infiltration trenches), for a 200 \'M POT.2\' lot, to be incorporated or not on the non-structural measures, which in turn were determinated by the hydraulic and hydrologic components of urban water. In the end, four scenarios were formed in time scale, current (2010), 2025, 2050, 2075 and 2100 (Global Orchestration, Order from Strength, Adapting Mosaic and TechnoGarden), as well as were performed sensibility analyses of non-structural measures in terms of urban scale and are assigned weights of the urban water\'s components to obtain the monetary value of taxes. Finally, relevant justifications were described, based on technical, economic, social and environmental questions of urban water, under the context of Sanitation\'s Federal Law nº11.445/07.

In future cities, urban drainage and flood management systems should be designed not only to reliable during normal operating conditions but also to be resilient to exceptional threats that lead to catastrophic failure impacts and consequences. Resilience can potentially be built into urban drainage systems by implementing a range of strategies, for example by embedding redundancy and flexibility in system design or rehabilitation to increase their ability to efficiently maintain acceptable customer flood protection service levels during and after occurrence of failure or through installation of equipment that enhances customer preparedness for extreme events or service disruptions. However, operationalisation of resilience in urban flood management is still constrained by lack of suitable quantitative evaluation methods. Existing hydraulic reliability-based approaches tend to focus on quantifying functional failure caused by extreme rainfall or increases in dry weather flows that lead to hydraulic overloading of the system. Such approaches take a narrow view of functional resilience and fail to explore the full system failure scenario space due to exclusion of internal system failures such as equipment malfunction, sewer (link) collapse and blockage that also contribute significantly to urban flooding. In this research, a new analytical approach based on Global Resilience Analysis (GRA) is investigated and applied to systematically evaluate the performance of an urban drainage system (UDS) when subjected to a wide range of both functional and structural failure scenarios resulting from extreme rainfall and pseudo random cumulative link failure respectively. Failure envelopes, which represent the resulting loss of system functionality (impacts) are determined by computing the upper and lower limits of the simulation results for total flood volume (failure magnitude) and average flood duration (failure duration) at each considered failure level. A new resilience index is developed and applied to link resulting loss of functionality magnitude and duration to system residual functionality (head room) at each considered failure level. With this approach, resilience has been tested and characterized for a synthetic UDS and for an existing UDS in Kampala city, Uganda. In addition, the approach has been applied to quantify the impact of interventions (adaptation strategies) on enhancement of global UDS resilience to flooding. The developed GRA method provides a systematic and computationally efficient approach that enables evaluation of whole system resilience, where resilience concerns ‘beyond failure’ magnitude and duration, without prior knowledge of threat occurrence probabilities. The study results obtained by applying the developed method to the case studies suggest that by embedding the cost of failure in resilience-based evaluation, adaptation strategies which enhance system flexibility properties such as distributed storage and improved asset management are more cost-effective over the service life of UDSs.

Questões de planejamento aliadas ao aumento da impermeabilização contribuem para a redução do amortecimento das águas, o que possibilita a ocorrência das enchentes urbanas. Assim, é imprescindível a adoção de instrumentos e ferramentas que permitam um adequado gerenciamento dos recursos hídricos, bem como de sua drenagem. Nesse sentido, o presente trabalho consistiu em propor e aplicar novas metodologias de medidas compensatórias não-estruturais como instrumentos de gestão das águas urbanas (Balanço Hídrico de Terceira Geração, \"IPTU Hidrológico\") em escala de lote urbano, de forma a gerar cenários prospectivos, que mostrem a influência da adoção de indicadores de pegada hídrica e de medidas estruturais da drenagem urbana no grau de neutralidade dos impactos no lote. A metodologia consistiu no dimensionamento e análises de custos das medidas estruturais (tanque de água e trincheira de infiltração) para um lote de 200 \'M POT.2\', a serem incorporadas ou não nas medidas não-estruturais (Balanço Hídrico de Terceira Geração e \"IPTU Hidrológico\"); que por sua vez, foram calculadas em função das componentes das águas urbanas, variáveis hidráulicas e hidrológicas. Ao final, foram formados 4 cenários em escala prospectiva atual (2010), 2025, 2050, 2075 e 2100: Global Orchestration, Order from Stregth, Adapting Mosaic, TechnoGarden e realizadas análises de sensibilidade das medidas não-estruturais em nível de escala de lote, bem como ponderações das componentes das águas urbanas para a obtenção dos valores monetários de IPTU. Por fim, foram extraídas justificativas pertinentes a tais medidas, com base em elementos técnicos, econômicos, sociais e ambientais de Águas Urbanas sob o contexto da Lei Federal de Saneamento Básico nº 11.445/07. / Planning\'s questions with the increase of impervious areas contribute to reduce the damping of water, allowing urban flooding\'s occurence. Thus, it\'s necessary to adopt instruments and tools that allow an appropriate management of water resources, as well as its drainage. In this sense, this paper proposed and implemented new methods of non-structural compensating measures as tools for urban water management (3rd Generation of Water Balance and \"Hydrological IPTU tax\") on urban scale in order to generate future scenarios that show the influence of the adoption of waterfootprint\'s indicators and structural measures in the neutrality of impacts in urban drainage. The methodology consisted in the design and cost analysis of the structural measures (water tank and infiltration trenches), for a 200 \'M POT.2\' lot, to be incorporated or not on the non-structural measures, which in turn were determinated by the hydraulic and hydrologic components of urban water. In the end, four scenarios were formed in time scale, current (2010), 2025, 2050, 2075 and 2100 (Global Orchestration, Order from Strength, Adapting Mosaic and TechnoGarden), as well as were performed sensibility analyses of non-structural measures in terms of urban scale and are assigned weights of the urban water\'s components to obtain the monetary value of taxes. Finally, relevant justifications were described, based on technical, economic, social and environmental questions of urban water, under the context of Sanitation\'s Federal Law nº11.445/07.

As changing climate and growing urban populations present new challenges for managing both the quantity and the quality of storm waterin cities, nature-based solutions such as blue-green infrastructure arebecoming widely considered as an alternative to grey infrastructure. The benefits, above providing storm water management at a lower cost, are increased ecosystem services. One of such solutions is SuDS: a collective name for drainage systems thatare designed to manage the quantity of runoff, protect or enhance water quality, increase amenity and foster biodiversity. In Sweden there is a lack of research on applying nature-based solutions in planning urban water management. This case study aims to contribute with knowledge of how working with blue-green infrastructure in a systematic way effects the outcome of urban planning and what ecosystem gains can be expected. ASuDS design was created following the SuDS guidelines for a greenfield residential area in the city of Krokom. The design was then compared with the original proposal by the municipality.The results show that the systematic method that SuDS brings to watermanagement planning leads to a different design of a residence area than what traditional methods produce. At the same time the ability to handle extreme rain event is at least as robust, with the ability of the system to generate other ecosystem services and further strengthen the resilience of the area. Further research is needed for a more detailed analysis of the generated ecosystem services. / <p>2023-06-02</p>

Guarulhos, o segundo município paulista em população, tem tentado aumentar sua importância no Estado e no país também nos aspectos sócio-econômicos. Como parte das necessidades inerentes a essa mudança de patamar, por sua alta taxa de crescimento, e devido à crônica e histórica deficiência no planejamento da cidade, nos últimos anos vários planos diretores setoriais foram lançados, todos relacionados direta ou indiretamente aos recursos hídricos. Ora por questões orçamentárias, ora por conveniência administrativa, foram executados separadamente o plano diretor de desenvolvimento do município apenas com diretrizes -, e os planos diretores de abastecimento de água, de esgoto sanitário e de drenagem, além do novo plano de abastecimento de água e esgotamento sanitário, este atendendo à Lei 11.445/2007. O plano diretor de resíduos sólidos encontra-se em elaboração. A fragmentação desses planos diretores, apesar de justificada em função das condições em que surgiram e pelas demandas que visavam a atender, pode não ser a mais adequada do ponto de vista dos conceitos mais modernos de gestão da água urbana. Assim, após uma análise crítica desses planos, é avaliada a proposta de elaboração de um Plano Integrado de Águas Urbanas pelo município. Como sugestão de ferramenta de apoio à decisão, é apresentado o emprego de metodologia de análise multicritério para hierarquização de ações, especificamente obras de saneamento de grande porte previstas nos planos diretores de Guarulhos ou em seus desenvolvimentos, buscando também catalisar as interações entre gestores de diferentes setores. / Guarulhos, the second most populous city in the São Paulo State, has tried to increase its importance in that State and in the country also in socioeconomic factors. As part of the needs associated with that step change, for its high growth rate, and due to chronic and historical lack of city planning, in recent years several sectoral master plans have been launched, all directly or indirectly related to water resources. Sometimes by budget issues, or by administrative convenience, these plans were executed separately from the master plan of the city - this, with only guidelines - and the master plans for water supply, waste water, drainage, and the new plan of water and waste water (required by the federal law 11.445/2007). The master plan for solid waste is under preparation. The fragmentation of these master plans, though justified in light of conditions in which they emerged and by the demands aimed at answering, is not adequate from the standpoint of modern concepts of management of water resources. So, after a review of these plans, is assessed the proposed development of an Integrated Urban Water Master Plan by the city. As a suggestion of a decision support tool, is presented the use of multicriteria analysis methodology for prioritization of actions, specifically huge works of sanitation contained in these master plans or in its developments, also seeking to promote interactions between managers from different sectors.

Guarulhos, o segundo município paulista em população, tem tentado aumentar sua importância no Estado e no país também nos aspectos sócio-econômicos. Como parte das necessidades inerentes a essa mudança de patamar, por sua alta taxa de crescimento, e devido à crônica e histórica deficiência no planejamento da cidade, nos últimos anos vários planos diretores setoriais foram lançados, todos relacionados direta ou indiretamente aos recursos hídricos. Ora por questões orçamentárias, ora por conveniência administrativa, foram executados separadamente o plano diretor de desenvolvimento do município apenas com diretrizes -, e os planos diretores de abastecimento de água, de esgoto sanitário e de drenagem, além do novo plano de abastecimento de água e esgotamento sanitário, este atendendo à Lei 11.445/2007. O plano diretor de resíduos sólidos encontra-se em elaboração. A fragmentação desses planos diretores, apesar de justificada em função das condições em que surgiram e pelas demandas que visavam a atender, pode não ser a mais adequada do ponto de vista dos conceitos mais modernos de gestão da água urbana. Assim, após uma análise crítica desses planos, é avaliada a proposta de elaboração de um Plano Integrado de Águas Urbanas pelo município. Como sugestão de ferramenta de apoio à decisão, é apresentado o emprego de metodologia de análise multicritério para hierarquização de ações, especificamente obras de saneamento de grande porte previstas nos planos diretores de Guarulhos ou em seus desenvolvimentos, buscando também catalisar as interações entre gestores de diferentes setores. / Guarulhos, the second most populous city in the São Paulo State, has tried to increase its importance in that State and in the country also in socioeconomic factors. As part of the needs associated with that step change, for its high growth rate, and due to chronic and historical lack of city planning, in recent years several sectoral master plans have been launched, all directly or indirectly related to water resources. Sometimes by budget issues, or by administrative convenience, these plans were executed separately from the master plan of the city - this, with only guidelines - and the master plans for water supply, waste water, drainage, and the new plan of water and waste water (required by the federal law 11.445/2007). The master plan for solid waste is under preparation. The fragmentation of these master plans, though justified in light of conditions in which they emerged and by the demands aimed at answering, is not adequate from the standpoint of modern concepts of management of water resources. So, after a review of these plans, is assessed the proposed development of an Integrated Urban Water Master Plan by the city. As a suggestion of a decision support tool, is presented the use of multicriteria analysis methodology for prioritization of actions, specifically huge works of sanitation contained in these master plans or in its developments, also seeking to promote interactions between managers from different sectors.