scholarly journals Revenue augmentation through improved water supply services: a case study of the SMART-WASA team of Faisalabad, Pakistan

2021 ◽  
Author(s):  
R. Ogata ◽  
S. Segawa ◽  
S. Rashid ◽  
H. Nakayama
Keyword(s):  
Water Supply ◽  
Water Distribution ◽  
Water Pressure ◽  
Distribution Area ◽  
Rate System ◽  
Flat Rate ◽  
Water Demands ◽  
Number Of Customers ◽  
Water Supply Services

Abstract The Water and Sanitation Agency of Faisalabad has tried to increase its revenue by increasing both its water demands and total number of customers. To this end, a pilot activity was implemented. Two selected pilot areas were hydraulically separated to increase water pressures within the areas. The results showed that the durations of water supply increased from 3.5 to 12 hours and from 6 to 18 hours per day in the pilot areas. The water pressure in each pilot area increased from 2 to 10 m and from 3 to 18 m, respectively. Wastewater contamination was also eliminated after increasing the water pressure. Customers were informed of these achievements through workshops, flyers, and banners on streets, which encouraged them to shift from a flat rate system to a metering system. Consequently, the total billed amounts for two pilot areas in March 2019 increased by 65.0% and 97.0%, compared with those from November 2016. The bill collection ratios also increased from 48.2% to 56.9% and from 48.1% to 60.6% during pilot activities. Improving services of water supply utilities through the formation of a water distribution area with an increase in water pressure is recommended as an effective method for revenue augmentation.

scholarly journals Multi-Water Source Joint Scheduling Model Using a Refined Water Supply Network: Case Study of Tianjin

Water ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1580 ◽  
Author(s):  
Shanghong Zhang ◽  
Jiasheng Yang ◽  
Zhongyu Wan ◽  
Yujun Yi
Keyword(s):  
Resource Allocation ◽  
Water Supply ◽  
Water Resource ◽  
Water Distribution ◽  
Distribution Area ◽  
Source Water ◽  
Supply Source ◽  
Water Resource Allocation ◽  
Regional Water

Water shortage problems are increasing in many water-deficient areas. Most of the current research on multi-source combined water supplies depends on an overall generalization of regional water supply systems, which are seldom broken down into the detail required to address specific research objectives. This paper proposes the concept of a water treatment and distribution station (water station), and generalizes the water supply system into three modules: water supply source, water station, and water user. Based on a topological diagram of the water network (supply source–station–user), a refined water resource allocation model was established. The model results can display, in detail, the water supply source, water supply quantity, water distribution engineering, and other information of all users in each water distribution area. This makes it possible to carry out a detailed analysis of the supply and demand of users, and to provide suggestions and theoretical guidance for regional water distribution implementation. Tianjin’s water resource allocation was selected as a case study, and a water resource allocation scheme for a multi-source, combined water supply, was simulated and discussed.

Comparative reliability analysis of the distribution areas of a water supply system and its application for an earthquake risk analysis

2001 ◽  
Vol 1 (4) ◽  
pp. 217-226 ◽  
Author(s):  
Y. Hosoi ◽  
Y. Kido
Keyword(s):  
Water Supply ◽  
Analytical Hierarchy Process ◽  
Water Distribution ◽  
Supply System ◽  
Water Supply System ◽  
Distribution Area ◽  
Earthquake Risk ◽  
Hierarchy Process ◽  
Supply Reliability

A methodology for comparative evaluation of the water supply reliability of distribution areas was presented. There are various factors which affect water supply reliability. As they cannot be quantified by the same standard, reliability of water distribution area was examined according to the value of each factor. These factors were organized into an index through the analytical hierarchy process. The reliability of each distribution area of the water supply system in the case study area was comparatively evaluated by the method. The problems and points necessary for improvement of the water supply reliability of each distribution area were indicated.

scholarly journals Programa Cisterna nas Escolas: estudo de caso na Microrregião Serrana dos Quilombos no estado de Alagoas, Brasil

2020 ◽  
Vol 13 (3) ◽  
pp. 1050
Author(s):  
Elvis Pantaleão Ferreira ◽  
José Thales Pantaleão Ferreira ◽  
Fabiana De Souza Pantaleão
Keyword(s):  
Water Supply ◽  
Rural Schools ◽  
The State ◽  
Report Cards ◽  
Public System ◽  
The Public ◽  
Access To Water ◽  
Semi Arid ◽  
Water Supply Services

O Projeto Cisternas nas Escolas objetiva o fornecimento de água para as escolas rurais do Semiárido, utilizando ações estruturais mediante concepção de cisternas como tecnologia social para armazenamento de água pluvial, e ações não estruturais por meio de práticas educativas contextualizadas. Este trabalho objetiva apresentar um pioneiro diagnóstico da infraestrutura dos serviços de abastecimento de água as escolas rurais em que foram implantadas cisternas do Programa Cisternas nas Escolas na Microrregião Serrana dos Quilombos, no estado de Alagoas, especificamente no município de Santana do Mundaú, utilizando-se como metodologia a pesquisa exploratória e qualitativa, com emprego de entrevista semiestruturada e não estruturada, além do uso de questionário, fichas-relatório e registros fotográficos. Das cisternas implantadas nas escolas, apenas uma está sendo parcialmente utilizada. Estão todas elas totalmente desprovidas de acompanhamento técnico, sendo possível perceber a falta de interesse do executivo municipal na promoção da manutenção desses equipamentos. São fundamentais ações que elevem o empoderamento social a essas construções.  Cistern in Schools Program: case study in the mountainous microregion of quilombos in the state of Alagoas, Brazil The reality of many rural schools in the public system presents a still worrying scenario regarding access to water. The Cisterns in Schools Project aims to provide water for rural schools in the Semi-Arid and priority areas located in indigenous villages and quilombola communities, using structural actions through the design of cisterns as social technology for rainwater storage, and non-structural actions through contextualized educational practices. The work aims to present a pioneering diagnosis of the infrastructure of water supply services to rural schools in which cisterns of the Cisterns in Schools Program were implemented in the mountainous dos Quilombos Microregion in the state of Alagoas, specifically in the municipality of Santana do Mandau. The methodology was based on exploratory and qualitative research using semi-structured and unstructured interviews, using a questionnaire, report cards and photographic records. Of the cisterns installed in schools, only one is being partially used. They are all totally devoid of technical monitoring, being possible to perceive the lack of interest of the municipal executive in promoting the maintenance of this equipment. Keywords: Water supply, Education, Health.

scholarly journals Quality changes of drinking water in the water supply network (case study from Lithuania)

2009 ◽  
Vol 41 (2) ◽  
pp. 109-118
Author(s):  
Marina Valentukeviciene ◽  
Aukse Amosenkiene ◽  
Regimantas Dauknys
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Water Samples ◽  
Water Distribution ◽  
Quality Changes ◽  
Supply Network ◽  
Water Supply Network ◽  
Well Field ◽  
Drinking Water Distribution

Quality changes of drinking water in the water supply network (case study from Lithuania) The purpose of this research was to examine water quality changes by distributing in to the water supply network. Water samples were collected from Varena town (Lithuania) drinking water distribution system fed by groundwater from well field. Parameters related to undesirable increasing of nitrites and nitrates concentrations have been measured considering these samples: pH, conductivity, concentration of total iron, manganese, ammonium, nitrates and nitrites. Results showed that groundwater from well field were extremely susceptible to favor bacterial growth in the pipelines. The occurrence of nitrites and nitrates in drinking water samples correlated positively with the lengths of old iron pipelines and negatively with the content of newly laid pipelines. The obtained results also showed that the potential nitrates increasing induced by the distribution of treated water could be reduced if: nitrates levels were below detection limits at the outlet of the water treatment plant; biological ammonium removal treatment implementation should reduce the levels of the nitrates and nitrites of the treated supplied water. Although the nitrates concentration increase in drinking water distribution systems, the issues with nitrites accumulation are rare in Lithuania. However, such processes still need to be proved in more extensive investigation, but these research results could be applied as a basic scenario.

scholarly journals The Unfavourable Impact of Street Traffic on Water Distribution Pipelines

Water ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 1086 ◽  
Author(s):  
Ioan Așchilean ◽  
Mihai Iliescu ◽  
Nicolae Ciont ◽  
Ioan Giurca
Keyword(s):  
Cast Iron ◽  
Water Supply ◽  
Water Distribution ◽  
Road Traffic ◽  
Distribution Networks ◽  
Negative Influence ◽  
Supply System ◽  
Water Supply System ◽  
Pipe Material

This article analyses the relation between the failures that occurred in the water supply network and the road traffic in the city of Cluj-Napoca in Romania. The calculations in this case study were made using the Autodesk Robot Structural Analysis Professional 2011 software. In the case study, the following types of pipes were analysed: steel, gray cast iron, ductile cast iron and high density polyethylene (HDPE). While in most studies only a few sections of pipelines, several types of pipelines and certain mounting depths have been analysed, the case study presented analyses the entire water supply system of a city with a population of 324,576 inhabitants, whose water supply system has a length of 479 km. The results of the research are useful in the design phase of water distribution networks, so depending on the type of pipe material, the minimum depth of installation can be indicated, so as to avoid the failure of the pipes due to road traffic. From this perspective, similar studies could also be carried out regarding the negative influence of road traffic on sewerage networks, gas networks and heating networks.

Safety guarantee technologies of water pressure and water quality: a case study in secondary water supply for high-rise buildings

2020 ◽  
Vol 184 ◽  
pp. 395-407
Author(s):  
Dongsheng Wang ◽  
Fuchun Jiang ◽  
Hongbin Liu ◽  
Hao Xiang
Keyword(s):  
Water Quality ◽  
Water Supply ◽  
Water Pressure ◽  
High Rise

scholarly journals Application of a water balance adapted to intermittent water supply and flat-rate tariffs without customer metering in Tiruvannamalai, India

2017 ◽  
Vol 18 (1) ◽  
pp. 347-356 ◽  
Author(s):  
Miran Mastaller ◽  
Philipp Klingel
Keyword(s):  
Water Balance ◽  
Water Supply ◽  
Distribution Systems ◽  
Water Distribution ◽  
Water Losses ◽  
Water Utility ◽  
Flat Rate ◽  
Intermittent Water Supply ◽  
Water Association ◽  
The City

Abstract Establishing the water balance developed by the International Water Association (IWA) is a worldwide applied approach to determine and analyse water losses in water distribution systems (WDS). The water balance covers those parts of a WDS within the responsibility of the water utility. Water losses occurring ‘before’ a customer meter are at the expense of the utility, while water lost or wasted ‘after’ the meter is paid for by the customer. This applies to systems where customer metering is in place and/or consumption is charged according to the consumed volumes. However, many WDS in the world lack customer meters, are operated intermittently and apply flat-rate tariffs. In intermittent supplies, a considerable amount of water is lost or wasted within the private properties. The flat-rate tariff might not cover this amount or part of the amount. Thus, actual consumption and wastage should be separately quantified with respect to the utility's water reduction measures. Accepting the described conditions, the authors have developed an adaption of the IWA water balance and the methods to establish the balance. In this paper the application of the developed approach in an initially unmetered WDS with intermittent water supply in the city of Tiruvannamalai, India, is presented.

scholarly journals Performance evaluation of water supply services in Chitungwiza: How water supply services mirrors poor governance and lack of management

2020 ◽  
Vol 1 ◽  
Author(s):  
Luckson Zvobgo
Keyword(s):  
Water Quality ◽  
Performance Evaluation ◽  
Water Supply ◽  
Distribution System ◽  
Water Distribution ◽  
Water Services ◽  
Municipal Water ◽  
Non Revenue Water ◽  
Water Supply Services

Background: Provision of reliable water services is crucial for urban livelihood. In Chitungwiza, provision of water services has been deteriorating since the millennium with residents losing hope for better services. The poor supply of municipal water in Chitungwiza has led to a chronic ‘dry taps situation’ where household taps are dry from periods of several consecutive days to months.Aim: This article assesses the water supply challenges in Chitungwiza through performance evaluation of the water supply services.Setting: The study was conducted in 26 suburbs in the four residential zones of Chitungwiza Municipality.Methods: Performance evaluation of water supply services was carried out using seven performance indicators: coverage of water supply connection, extent of metering of water connections, presence of leakages, extent of non-revenue water, continuity of water supply, quality of water supplied and efficiency in redressal of customer complaints. Two hundred and ninety-eight semi-structured questionnaires were administered in four residential zones of Chitungwiza. Water distribution system surveillance and key informant interviews were also conducted.Results: The results indicate high non-revenue water, poor water infrastructure maintenance, lack of water investment leading to widespread leakages in the distribution system, poor water quality supply and unreliable services provision. A majority, 80.2%, rated the municipal water supply services as poor. To cope with this new reality, households in Chitungwiza implemented a ‘source switch’ to new sources.Conclusion: Household shallow wells were identified as the main adapting strategy with 51.7% households relying on wells despite concerns about the water quality of the wells. Chitungwiza municipality should implement structural reforms that allow the current water service provision to improve.

scholarly journals An Approach to Analysing Water Consumers’ Acceptance of Risk-Reduction Costs

Resources ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 132
Author(s):  
Barbara Tchórzewska-Cieślak ◽  
Katarzyna Pietrucha-Urbanik ◽  
Emilia Kuliczkowska
Keyword(s):  
Water Supply ◽  
Potable Water ◽  
Supply System ◽  
Investment Management ◽  
Additional Costs ◽  
Operational Decision Making ◽  
Proper Operation ◽  
Reduction Costs ◽  
Water Supply Services

The proper operation of a water supply system (WSS) requires constant investment. The priority is to provide residents with high quality potable water, in the required quantity and pressure, in accordance with the applicable regulations. The paper presents an assessment of the potential inherent operational risk of a WSS in support of the risk-based investment management process. It is of high importance to invest in the operational safety as it concerns both producers and consumers. The investment engenders additional costs that should partially be supported by the consumers. Thus, the paper presents a methodology to analyse consumers’ readiness to accept water supply services’ additional costs. The proposed methods may underpin a comprehensive program for risk-based investment management and operational decision-making. The case study and the approach in this article concern one particular regional WSS, based on information collected from water consumers. The assessment suggests a willingness to tolerate additional costs in view of enhancing the performance of the water supply services.

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