scholarly journals Perception of the citizens in the city of São Mateus, Brazil, on water supply and the implications in its use

2020 ◽  
Author(s):  
Angelo Rezende Vinturini ◽  
Rita de Cassia Feroni ◽  
Elson Silva Galvão
Keyword(s):  
Water Supply ◽  
Total Dissolved Solids ◽  
Water Supply Systems ◽  
Raw Water ◽  
Alternative Source ◽  
Water Wells ◽  
Alternative Sources ◽  
Supply Systems ◽  
The City ◽  
Southeastern Region

Abstract The perception of consumers concerning the water supplied by water supply systems (WSS) can be a valuable tool for the management of water resources. This study aims to assess the perception of the citizens of the city of São Mateus, a southeastern region of Brazil, concerning the water supplied by the local WSS, and investigating the availability of other alternative sources. A survey was applied for a sample of local consumers, and the results suggest that most consumers do not have a good opinion regarding the water quality, highlighting flavor, color, and intermittent supply as the main issues, especially during periods of drought. These conditions are mainly associated with the increase of the total dissolved solids (TDS) levels in the raw water. Using private water wells is pointed out as an available alternative source for multiple domestic uses; nevertheless, this alternative may cause some concern if the exploitation of the resource is made without control.

Assessment of the potential contribution of alternative water supply systems in two contrasting locations: Lilongwe, Malawi and Sharm El-Sheikh, Egypt

2018 ◽  
Vol 11 (1) ◽  
pp. 130-149 ◽  
Author(s):  
Osman Jussah ◽  
Mohamed O. M. Orabi ◽  
Janez Sušnik ◽  
Françoise Bichai ◽  
Chris Zevenbergen
Keyword(s):  
Water Supply ◽  
System Performance ◽  
Social Preferences ◽  
Water Supply Systems ◽  
Potential Contribution ◽  
Important Conclusion ◽  
Assessment Approach ◽  
Alternative Water ◽  
Alternative Sources ◽  
Supply Systems

Abstract Growing water demand poses a challenge for supply. Poor understanding of alternative sources can hamper plans for addressing water scarcity and supply resilience. The potential of three alternative supply systems in Lilongwe, Malawi and Sharm El-Sheikh, Egypt are compared using a fast, data-light assessment approach. Lilongwe water supply is based on unsustainable use of source water, while Sharm depends primarily on desalination. Both locations experience shortages due to poor system performance and service inequity. Alternative supply systems are shown to potentially contribute to supply augmentation/diversification, improving service and system resilience. There are considerable seasonal variations to consider, especially regarding storage of water. Social preferences could limit the uptake/demand for alternative water. One important conclusion is the value in addressing public perceptions of alternative systems, and assessing water end use in order to site systems appropriately. Other issues surround financing, encouraging uptake and addressing institutional/governance aspects surrounding equitable distribution. A further consideration is whether demand reductions might yield shorter-term improvements in performance without the need to institute potentially expensive alternative water strategies. Reducing non-revenue water is a priority. Such measures should be undertaken with alternative supply enhancement to reduce inequity of supply, improve system performance and increase resilience to future changes.

scholarly journals Energy Recovery Using Micro-Hydropower Technology in Water Supply Systems: The Case Study of the City of Fribourg

Water ◽  
2016 ◽  
Vol 8 (8) ◽  
pp. 344 ◽  
Author(s):  
Irene Samora ◽  
Pedro Manso ◽  
Mário Franca ◽  
Anton Schleiss ◽  
Helena Ramos
Keyword(s):  
Water Supply ◽  
Energy Recovery ◽  
Water Supply Systems ◽  
Supply Systems ◽  
The City

scholarly journals Methodological approaches for the state as well as a prospect analysis of the development of city water supply systems

2018 ◽  
Vol 45 ◽  
pp. 00024
Author(s):  
Anatoly Hurynovich ◽  
Vitali Baitsou
Keyword(s):  
Water Supply ◽  
Information Technologies ◽  
Small Towns ◽  
The State ◽  
Water Supply Systems ◽  
Water Wells ◽  
Methodological Approaches ◽  
City Water ◽  
Technical Solutions ◽  
Supply Systems

The need to develop methodological approaches for an analysis of the state, as well as the prospects for the development, of water supply systems in small towns is due to a comprehensive assessment of problems and the need to solve problems related to the optimization of current costs and investments. The main stages of research are considered, the result of which is the development of measures to optimize and intensify water supply systems. Methodological approaches are proposed that make it possible to obtain mathematical models adequate to the existing hydraulics of the system to the maximum possible extent: the water supply network-pumping stations-water wells. The studies are based on the use of modern information technologies for the collection of data and their processing, as well as the development of technical solutions.

Frequency pressure regulation in water supply systems

2013 ◽  
Vol 13 (4) ◽  
pp. 896-905 ◽  
Author(s):  
Ivan Halkijevic ◽  
Zivko Vukovic ◽  
Drazen Vouk
Keyword(s):  
Water Supply ◽  
Cost Effective ◽  
Pressure Control ◽  
Water Supply Systems ◽  
Pressure Regulation ◽  
Effective Activity ◽  
Variable Frequency Drives ◽  
Loss Control ◽  
Supply Systems ◽  
The City

In water supply systems, pressure management in most cases is proven to be the most cost-effective activity related to water loss control. As an advanced method of pressure control, it is possible to use variable frequency drives for centrifugal pump control. Pressure regulation can be performed with constant pressure or with proportional pressure control. The application of proportional pressure control is particularly applicable in water supply systems as the operating pump performance is constantly adapting the pressure to the actual demand. Along with lower leakage losses, it also results in lower energy consumption and the elimination of non-stationary phenomena, thereby extending the pump lifetime. Therefore, the paper presents a theoretical discussion of the proportional pressure control. Possible savings are shown on the numerical example of water supply system of the city of Velika Gorica.

scholarly journals PATTERN OF WATER SUPPLY IN RELATION TO DIFFERENT WATER SOURCES IN METROPOLITAN KANO

2020 ◽  
Vol 4 (3) ◽  
pp. 690-696
Author(s):  
Abubakar Hadiza Suleiman
Keyword(s):  
Drinking Water ◽  
Local Government ◽  
Water Supply ◽  
Research Work ◽  
Water Sources ◽  
Water Supply Systems ◽  
Sampling Techniques ◽  
Alternative Sources ◽  
Supply Systems ◽  
Different Water Sources

The study carried out on pattern of water supply in relation to different water sources in metropolitan Kano was aimed to assess the pattern of water supply in the area. Eight local government areas were found in the area but six local government areas were selected in conducting the research work. The selected local government areas included dala, Fagge, Kano Municipal, Gwale, Tarauni, Nassarawa. The research work was conducted through the following methods of data collection, (questionnaire and interview). Krecjie and morgan sampling techniques was adopted in administering the questionnaire, because it was the best sampling techniques that suited the study. The result of the findings indicated that ground water sources are now the major sources of water used in the study area, pipe borne water was generally inadequate. Dala, Kano Municipal, Fagge and Gwale were the areas mostly affected with scarcity of pipe borne water. Other sources of water for household usage included water from vendors and water supply Tankers. Some sources of water were founded inactive (that is sources of water producing less or no water due to some problems). Most people in the area depend on sachet water as their source of drinking water. Finally, in order to overcome some of the problems of water is their source of drinking water. Finally, in order to overcome some of the problems of water supply it was recommended that there should be alternative sources of power, regular maintenance, train of manpower, and effective management of water supply systems.

scholarly journals About the question of the assessment of the drinking water quality in centralized water systems in the current conditions

2020 ◽  
Vol 99 (6) ◽  
pp. 563-568
Author(s):  
Yuliya A. Novikova ◽  
K. B. Friedman ◽  
V. N. Fedorov ◽  
A. A. Kovshov ◽  
N. A. Tikhonova ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Supply System ◽  
Drinking Water Quality ◽  
Water Supply Systems ◽  
High Quality ◽  
Supply Systems ◽  
The City

Introduction. Regulation of drinking water quality is a very important area of health care and improving the quality of life of the population of the Russian Federation.The aim of this work is the development a model for the assessment of the drinking water quality and calculating the share of the population, including urban, provided with high-quality drinking water from centralized water supply systems, taking into account new methodological approaches to the evaluation of the quality of drinking water using the example of water supply to settlements in the Leningrad Region. Material and methods. The data on the organization of centralized cold water supply systems and monitoring systems for drinking water quality and the results of laboratory studies of drinking water quality in the cities of Volkhov, Svetogorsk, Slantsy, Tosno were studied. Statistical processing of the results was performed, the categories of quality of drinking water supplied to the population were determined, the number of the population provided with high-quality drinking water from the water supply system was calculated in accordance with Guidelines 2.1.4.0143-19.Results. In 2018, 100% of the population was provided with quality drinking water only in the city of Slantsy. In the city of Tosno, this index reached of 83.5%. In the cities of Volkhov and Svetogorsk, drinking water was rated as low-quality. But it is worth noting that in the cities of Volkhov and Slantsy laboratory tests were carried out at 2 points, in the city of Svetogorsk - only at the 1 point, which, given the number of residents, is not enough. For an objective assessment of the state of drinking water and the development of measures aimed at improving its quality, it is necessary to increase the number of monitoring points, as well as to include the results of control and supervision measures and production laboratory control conducted by water supply organizations in the volume of laboratory information.Conclusion. The proposed model allows us to assess the drinking water quality in centralized water supply systems and the proportion of the population, including urban, provided with quality drinking water at the level of the water supply system, settlement, municipal district (urban district), subject of the Russian Federation

scholarly journals The Development of the Athens Water Supply System and Inferences for Optimizing the Scale of Water Infrastructures

2019 ◽  
Vol 11 (9) ◽  
pp. 2657 ◽  
Author(s):  
G.-Fivos Sargentis ◽  
Romanos Ioannidis ◽  
Georgios Karakatsanis ◽  
Stavroula Sigourou ◽  
Nikos D. Lagaros ◽  
...  
Keyword(s):  
Water Supply ◽  
Water Supply Systems ◽  
Capital Investments ◽  
Local Data ◽  
City Population ◽  
Big City ◽  
Water Scarce ◽  
The Cost ◽  
Supply Systems ◽  
The City

Modern organized societies require robust infrastructures, among which hydraulic projects, such as water supply and drainage systems, are most important, particularly in water-scarce areas. Athens is a unique example because it is a big city (population 3.7 million) located in a very dry area. In order to support the development of the city, large hydraulic projects had to be constructed during its history and, as a result, Athens currently has one of the largest water supply systems in the world. Could Athenians choose smaller scale infrastructures instead? Analyzing social, technical and economical historical data, we can see that large capital investments were required. In order to evaluate these investments this paper presents a technical summary of the development. An economic analysis displays historical values of these investments in present monetary values. The cost of existing infrastructure is compared to the cost of constructing smaller reservoirs and a model is created to correlate the price of water and the cost of water storage with the size of reservoirs. In particular, if more and smaller reservoirs were built instead of the large existing ones, the cost of the water would significantly increase, as illustrated by modelling the cost using local data.

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