SISAR: a sustainable management model for small rural decentralized water and wastewater systems in developing countries

2012 ◽  
Vol 2 (4) ◽  
pp. 291-300 ◽  
Author(s):  
Alejandro Meleg
Keyword(s):  
Water Supply ◽  
State Government ◽  
Financial Sustainability ◽  
Wastewater Systems ◽  
User Groups ◽  
Regional Basis ◽  
Water And Wastewater ◽  
Adequate Provision ◽  
International Financing ◽  
Local User

Investments for basic rural sanitation programs should not only focus on the construction of new installations, but also on the necessity of implementing proper management models that guarantee the operational and financial sustainability of the investments. The integrated rural sanitation system (SISAR) is based on the idea of creating a confederation of local user groups which come together on a regional basis, and through an adequate institutional setup, are responsible for managing SISAR and assuring the adequate provision of water supply and in some cases, wastewater services. Financial sustainability is achieved by the implementation of tariffs for water consumption and provision of wastewater services generating revenue which is redistributed among all systems in order to cover all operational, maintenance and administration costs. Important stakeholders in the model include, besides the users, local and state government and international financing institutions responsible for financing the investments in the construction of rural water supply and wastewater systems. This document focuses on the experience and results achieved by SISAR in the Brazilian state of Ceará. In 2001 eight SISARs began providing improved water supply services in 66 settlements. Today, more than 560 settlements (more than 330,000 inhabitants) are supplied by SISARs.

Water supply and sanitation planning model: a management tool for large Brazilian cities

2003 ◽  
Vol 3 (1-2) ◽  
pp. 469-476
Author(s):  
S.R.A. Soares ◽  
R.S. Bernardes
Keyword(s):  
Water Supply ◽  
Low Income ◽  
Management Tool ◽  
Urban Water ◽  
Rapid Urbanization ◽  
Modeling Approach ◽  
Developing Cities ◽  
Starting Point ◽  
Water And Wastewater ◽  
Water Supply And Sanitation

The sanitary problems promoted by the rapid urbanization process in developing cities are usually resulted from the absence of planning, high population concentration and inadequate water and wastewater infrastructure for low income people. Because the provision and planning of water supply and is a complex task, a modeling approach was used to enhance the understanding of the process and the aspects involved. In the development of a model, not only the technical aspects were taken into account, but other aspects related to the provision of drinking water and the water resources protection were also analyzed, such as institutional, financial, socioeconomic, environmental and public health. In the modeling process two different methods of conceptualization were used to describe the urban water flow through the water and wastewater systems linked to various aspects related to their implementation in large developing cities. The urban water systems of five large metropolitan areas in Brazil were also evaluated for the complete model. It is expected that the modeling approach developed in this paper consists of a valuable methodology for water supply and sanitation planning in Brazilian cities, and other developing cities with the same characteristics. The suggested conceptual model could, at least, provide more than a starting point for a useful urban water management tool.

Monitoring and validation of decentralised water and wastewater systems for increased uptake

2013 ◽  
Vol 67 (11) ◽  
pp. 2576-2581 ◽  
Author(s):  
A. K. Sharma ◽  
S. Cook ◽  
M. N. Chong
Keyword(s):  
Case Studies ◽  
Energy Demand ◽  
Climate Change Impacts ◽  
Extended Period ◽  
Design Guidelines ◽  
Limited Information ◽  
Actual Performance ◽  
Decentralised Systems ◽  
Wastewater Systems ◽  
Water And Wastewater

Decentralised water and wastewater systems are being implemented to meet growing demand for municipal services either in combination with centralised systems or as standalone systems. In Australia, there has been increased investment in decentralised water and wastewater systems in response to the capacity constraints of existing centralised systems, an extended period of below average rainfall, uncertainly in traditional water sources due to potential climate change impacts, and the need to reduce the environmental impact of urban development. The implementation of decentralised water systems as a mainstream practice at different development scales is impeded by the knowledge gaps on their actual performance in a range of development types and settings. As the wide-spread uptake of these approaches in modern cities is relatively new compared to centralised approaches, there is limited information available on their planning, design, implementation, reliability and robustness. This paper presents a number of case studies where monitoring studies are under way to validate the performance of decentralised water and wastewater systems. The results from these case studies show the yield and reliability of these decentralised systems, as well as the associated energy demand and ecological footprint. The outputs from these case studies, and other monitoring studies, are important in improving decentralised system design guidelines and developing industry wide management norms for the operation and maintenance of decentralised systems.

scholarly journals Screening Tool for Energy Evaluation of Projects: A Reference Guide for Assessing Water Supply and Wastewater Treatment Systems

2021 ◽  
Keyword(s):  
Wastewater Treatment ◽  
Water Supply ◽  
Energy Use ◽  
Screening Tool ◽  
Water And Wastewater Treatment ◽  
Reference Guide ◽  
Energy Evaluation ◽  
Wastewater Systems ◽  
Use Efficiency ◽  
Wastewater Treatment Systems

The Screening Tool for Energy Evaluation of Projects (STEEP) is designed to help improve energy use efficiency in water and wastewater treatment systems. This publication provides a detailed overview of STEEP and guides users on how to apply it during energy use assessments of proposed or existing water supply and wastewater systems. Since 2017, STEEP has been under continuous development based on pilot assessments carried out in various projects financed by the Asian Development Bank. STEEP is available online and can be downloaded for free.

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