Management Of Water Supply Systems Research Articles

Application of Hydrochemical Parameters as Tool for Sustainable Management of Water Supply Network

Effective management of Water Supply Systems (WSSs) is crucial for ensuring safe drinking water. The WSS of Varaždin County is a complex network involving three groundwater sources: Bartolovec and Vinokovščak wellfields (alluvial aquifers) and Bela karstic spring. To achieve a comprehensive characterization of WSSs, routine laboratory data was integrated with stable isotopes and geochemical modeling. Within this study, all measured parameters remain below the Maximum Contaminant Level (MCL), ensuring water safety for human consumption. The Piper diagram identified variations in water sources based on their chemical composition, providing a simplified overview of mixing patterns within WSSs. Among the modeling approaches, inverse modeling (IM) was found to be more reliable than forward modeling (FM) and mass balance modeling (BM). Despite the limited capacity of δ18O to provide accurate mixing results, it was revealed that the reservoir water was in equilibrium with the air (no evaporation effects), indicating well-sealed reservoirs. Mixing modeling showed that the western, southwestern, and northern parts of the WSS mixed all three sources, whereas the eastern and southeastern areas primarily relied on the deeper aquifer of the Bartolovec source, indicating potential vulnerability. Strict validation criteria ensured the reliability of results, demonstrating the effectiveness and applicability of geochemical modeling in water security management plans.

Estimation of Hydraulic and Water Quality Parameters Using Long Short-Term Memory in Water Distribution Systems

Predicting essential water quality parameters, such as discharge, pressure, turbidity, temperature, conductivity, residual chlorine, and pH, is crucial for ensuring the safety and efficiency of water supply systems. This study employs long short-term memory (LSTM) networks to address the challenge of capturing temporal dependencies in these complex processes. Our approach, using a robust LSTM-based model, has demonstrated significant predictive accuracy, as evidenced by substantial R-squared values (e.g., 0.86 for discharge and 0.97 for conductivity). These models have proven particularly effective in handling non-linear patterns and time-series data, which are prevalent in water quality metrics. The results indicate the potential for LSTMs not only to enhance the real-time monitoring of water systems but also to aid in the strategic planning and management of water supply systems. This study’s findings can serve as a basis for further research into the integration of AI in environmental engineering, particularly for predictive tasks in complex, dynamic systems.

Enhanced Automation, Operation, And Management of Rural Water Supply Systems Using IoT Technologies

Enhanced Automation, Operation, And Management of Rural Water Supply Systems Using IoT Technologies

ASSESSMENT OF RELIABILITY IN THE WATER BALANCE OF MILLS

The thesis presented will talk about carrying out a reliability study applied to the water balance of Moinhos, where a proposal for intervention in a mining company will be shown. The importance of the reliability study will also be analyzed, since the loss of water through leaks resulting from excess pressure is a major obstacle in the management of water supply systems. Thus, this study revolves around responding to climatological aspects that affect water balance variables. This work is justified by the importance of carrying out a reliability study on the water balance of Moinhos, aiming to know the water availability in the region. The general objective of this dissertation is to present a proposal for a densimeter installation service to control the water balance of Moinhos in a mining company. In the specific objectives, concepts about the objects of study of the research will be presented, in addition to investigating the energy consumption by the studied company, describing the process of installing densimeters, until the evaluation of the expected results. The methodology used to carry out this study will be qualitative and bibliographic research.

Risk analysis and management of the internal water supply system - changes in the approach to legionellosis prevention in inpatient healthcare facilities

Risk analysis and management of the internal water supply system - changes in the approach to legionellosis prevention in inpatient healthcare facilities

Determinants of Community Participation in Sustainable Management of Rural Water Supply System: Evidence from District Lahore, Pakistan

Sustainable functionality of rural water supply systems is one of the most imperative aspects to ensure the provision of safe drinking water for communities. In recent decades, a number of projects have been initiated by national and international organizations to meet the desired need for safe drinking water and sanitation, but a large proportion of these development projects fail shortly after their execution. The majority of water supply projects fail in rural communities within three years after development due to the least level of community participation regarding decision-making, site identification, planning, execution, monitoring, evaluation and management process and, above all, unawareness, lack of basic technical and management skills. This study presents the most influencing determinants of community participation that are compulsory for the sustainable functionality of rural water supply systems. This study was conducted in the district of Lahore, Pakistan and simple random sampling methods and techniques were applied to draw the sample from the population. A semi-structured questionnaire was used as a tool for data collection. The result of the study indicated that a significant association existed among community participation in planning, execution, operation, maintenance & evaluation processes and sustainability functionality of rural water supply systems.

Ключевые направления и мировые практики повышения эффективности и надежности водоснабжения

The article reviews modern research and practical developments in the field of increasing the efficiency and reliability of water supply systems. The analysis covers both the micro level, which includes optimizing the opera-tion of individual components of the system, and the macro level, related to the management and optimization of the water supply system as a whole. Particular attention is paid to improving the efficiency of pumping units, leaks and pressure losses management, as well as water treatment processes optimization. At the macro level, the article presents a review of strategies for the optimal distribution of water between water intakes, a study of the zones of water intakes influence on the hydraulic network, dynamic pressure planning and power consump-tion management of pumping stations. The importance of monitoring and diagnostics systems for increasing the reliability of water supply systems is emphasized. Key areas of research and current problems are identified, and promising approaches to improving the management of urban water supply systems are proposed

Hydraulic and Water Quality Simulation in a Drinking Water Supply Network: A Case Study of the Ain Regada Network

Abstract To ensure the quantitative and qualitative safety of the drinking water supply to urban and rural areas, drinking water supply network managers are always concerned to improve the quality of the service provided to consumers and the continuity and quality of the water distributed. They are also concerned to ensure better management of all water supply systems. The development of computer software has made network modelling an essential part of the design and management of water supply systems. In this context, this study focuses on the operation of the Ain Regada water supply network. The simulation of the operation of the network in its current state is carried out using Epanet software.

Modeling source water disinfection byproducts formation potential using environmental variables

AbstractPredictive models of disinfection byproducts (DBPs) formation in treated drinking water have been widely used to guide operational decisions. However, very few studies have addressed the issue of managing DBPs through watershed protection programs and proactive management of water supply systems through predictive modeling of DBP formation potential in source waters. Here, we propose a two‐component, simple statistical approach to predict the formation potentials of the sum of five haloacetic acids (HAA5fp) and total trihalomethanes (TTHMfp) in source water streams using environmental variables and ultraviolet absorbance at 254 nm wavelength (UV254) as a surrogate for DBP precursors. In the first component of the model, using three feature selection regression models and cross‐validation of subsets of the selected predictors, we identified three commonly monitored variables—streamflow, soil temperature, and total phosphorus for predicting UV254. In the second component, HAA5fp and TTHMfp are predicted from UV254. The approach is successfully demonstrated for two source water streams of the New York City water supply system (R2 was 0.8, and 0.7–0.8 for the two model components). Long‐term predictions of HAA5fp and TTHMfp showed distinct seasonal patterns that are linked to differences in land uses of the two watersheds. Moreover, sensitivity analysis showed that transport processes were important in one watershed whereas production processes were more important in the other.

Water committees in the implementation of decentralization measures in the water sector in Gaza Province, Mozambique: ownership and resistance

Abstract As part of the water supply services decentralization in Mozambique, water user committees play a key role to manage water supply systems. However, they struggle with sustainability issues, which affect the water access to the communities. This paper intends to understand the sustainability of water systems in Mozambique based on the sociocultural dynamics, normative and institutional framework, and the interaction of social actors involved in the community management of water systems. This is a qualitative study based on phenomenology principles whose experiences were based on field work carried out in Gaza province, Mozambique. The study revealed that community management of water supply systems in Mozambique was a policy option for decentralization of water supply management, in response to the weak capacity (resources and technicians) for this purpose. The study shows that, in practice, there has yet to be much success in achieving the objectives of the Water User Committee, as they have proven to be less effective in meeting water access needs. There are challenges affecting the sustainability of the Water User Committee, such as weak understanding of their roles, conflicts, transparency, accountability and, in turn, the sustainability of water sources.

Hydrogeological Aspects of the Municipal Water Supply of Albania: Situation and Problems

The municipal water supply, related mainly to the cities of Albania, began to develop in the second half of the 19th century and very intensively after 1945. Today, the reported mean water production for the cities, on average, is about 300 l/capita/d, including drinking and industrial water supplies. The territory of Albania has an uneven distribution of very heterogeneous aquifers conditioning often the difficulty of municipal water supply solutions. In this article, are analyzed and classified the hydrogeological aspects of the water supply sources of the settlements, which are summarized in five groups: (a) wells in alluvial intergranular aquifers; (b) karst springs; (c) wells in karst aquifers; (d) springs in fissured rocks; and (e) mixed water sources. For each group of the water supply sources, the main concerns regarding the quantity and quality problems are analyzed, facilitated by the description of a variety of representative examples of different situations. Based on the gained experience, important recommendations are given for the better understanding of hydrogeological aspects of water supply systems, related to the river water recharge areas, the seawater intrusion in coastal aquifers, and the high vulnerability of karst aquifers, as well as transboundary aquifers. However, the main problem of public water supply of Albania remains the poor management of water supply systems, which is reflected in the significant water losses, as well as the low public awareness of requests for sustainable use.

Poisson rectangular pulse (PRP) model establishment based on uncertainty analysis of urban residential water consumption patterns

The commonly used Poisson rectangular pulse (PRP) model, employed for simulating high-resolution residential water consumption patterns (RWCPs), relies on calibration via medium-resolution RWCPs obtained from practical measurements. This introduces inevitable uncertainty stemming from the measured RWCPs, which consequently impacts the precision of model simulations. Here we enhance the accuracy of the PRP model by addressing the uncertainty of RWCPs. We established a critical sampling size of 2000 household water consumption patterns (HWCPs) with a data logging interval (DLI) of 15 min to attain dependable RWCPs. Through Genetic Algorithm calibration, the optimal values of the PRP model's parameters were determined: pulse frequency λ = 91 d−1, mean of pulse intensity E(I) = 0.346 m3 h−1, standard deviation of pulse intensity STD(I) = 0.292 m3 h−1, mean of pulse duration E(D) = 40 s, and standard deviation of pulse duration STD(D) = 55 s. Furthermore, validation was conducted at both HWCP and RWCP levels. We recommend a sampling size of ≥2000 HWCPs and a DLI of ≤30 min for PRP model calibration to balance simulation precision and practical implementation. This study significantly advances the theoretical foundation and real-world application of the PRP model, enhancing its role in urban water supply system management.

Blockchain applicability in the management of urban water supply and sanitation systems in Spain

Blockchain constitutes a disruptive technology that is currently changing business models and the way organizations operate. This paper explores the applicability of blockchain technology, and of distributed ledger technologies in general, to urban water supply and sanitation services in Spain. The potential of this technology for improving processes in this sector is assessed through a specific methodology of strategic analysis developed for this purpose. First, the technical, legal and managerial factors that condition the potential use of this technology to address the global, operational and governance challenges faced by urban water management are explored. Second, strategic analysis tools (e.g. value chain, factors of competition, and benchmarking) are used to model a water utility organization as a set of processes and characterize blockchain as an enabling technology with both benefits (traceability, immutability, and disintermediation) and limitations. Based on cost-benefit analysis, use cases in which the implementation of a blockchain could improve the organization's performance can be discerned. The results identify the processes and sub-processes of urban water utility management for which the use of a blockchain could improve performance: comprehensive maintenance, the management of serious incidents, and supplier management. Essentially, the methodology developed identifies management processes whose requirements are efficiently met through automation derived from blockchain solutions. Regardless of the management models currently in place in Spain, the traceability and disintermediation benefits of blockchain solutions can help to overcome governance and efficiency challenges associated with the management of urban water supply and sanitation services.

Optimizing bilinear multi-source water supply systems using mixed-integer linear programming approximations: An analysis of the Israeli seawater desalination array

Decision support systems (DSSs) in water resources management often use optimization models to make decisions. Therefore, the quality of these models is crucial for the success of DSSs. However, optimization models can struggle with reaching global optima, resulting in inconsistent and untrustworthy results for decision-makers. Additionally, current solution methods can be slow and inefficient, hindering real-time interaction with the DSS. This study addresses the optimal regional Multisource Water Supply Systems (MWSS) management using efficient global optimization techniques. The MWSS problem is formulated as a nonlinear optimization program due to using bilinear terms, which can result in multiple local optima. To overcome this challenge, four Mixed Integer Linear Program (MILP) formulations are proposed, which can be globally solved in a computationally effective manner using readily available MILP solvers. Our proposed formulations are tested on the Israeli Water Supply System (IWSS), which presents a unique challenge due to the inclusion of the seawater desalination array. In addition, this system must balance conventional and non-conventional water sources with varying qualities and characteristics. The results show that the proposed formulations provide a computationally efficient solution for the IWSS problem, allowing for the optimal utilization of different water sources in the IWSS.

Public-private partnership water supply project in Indonesia

Water supply system management for providing proper services to the community is a challenge for the Government of Indonesia. The Indonesian government through the Public-Private Partnerships (PPPs) scheme involves the role of the private sector for decent, quality, and cost-effective water supply system infrastructure. This study aims to describe problems faced by the Regional water supply system PPP project initiated by business entities (unsolicited) in Indonesia. Also, describes the application of Critical Success Factors as a problem-solving strategy in the implementation of the water supply system PPP project. To express this, This research uses a case study qualitative method involving Government Contracting Agency (GCA) informants from the Ministry of X. Data were collected through semi-structured interviews and documentation studies. It was found that in this case, the water supply PPP project has gone through the stages of PPP agreement signing which still faced problems in land provision, the certainty of raw water sources, inflation, tariff setting, and downstream infrastructure development. GCA seeks to resolve the problem with intensive coordination between related parties, financial and non-financial compensation, alternative sources of raw water, and support from the GCA Budget for downstream development.

Supply Water Quality Assessment in the Sirajganj Municipality, Sirajganj, Bangladesh

In many developing countries, such as Bangladesh, water quality and the risk of water-related diseases are serious public health concerns. The present study's goal was to ascertain the water supply quality and to characterize and analyze its suitability for drinking purposes in the municipal area of Sirajganj Town, Bangladesh. Fifteen water samples were randomly collected from different municipal wards and analyzed for various physicochemical properties, including hydrogen ion concentration (pH), electrical conductivity (EC), total dissolved solids (TDS), dissolved oxygen (DO), acidity, total alkalinity (TA), total hardness (TH), arsenic (As), and iron (Fe) concentrations. The results were compared with the Environmental Conservation Rules (ECR) and World Health Organization (WHO) recommended standards. All the physicochemical parameters were found to be within the prescribed permissible limits. The pH values, which ranged from 6.61 to 7.73, were neutral to slightly alkaline. The TH value varied from 204 to 284 mg/L, indicating that the supply water type was hard. Hence, it was suggested that the local water treatment plant should soften the water supply before consumption. In the case of DO and Fe, the DO values varied from 2.0 to 3.9 mg/L, which were far below the levels prescribed by the ECR recommended standards. Fe concentration in some areas exceeded the WHO recommended standards, probably due to the corrosion of old metal pipelines and improper treatment of groundwater before distribution in the supply network. The existing water supply in Sirajganj Municipality was at a satisfactory level, but weaknesses in the current water supply management system were identified, and there was a continuous lack of service provisions. Suggested measures include consistently monitoring water distribution networks, promptly repairing and maintaining overhead and service tanks, establishing database management systems, regulating private investment, adopting advanced technology, ensuring provisions for staff training, and implementing a rights-based approach in water supply production.

Water infrastructure resilience and water supply and sanitation development challenges in developing countries

Abstract Water supply and sanitation development in developing countries, specifically in Ethiopia, appear to be making substantial progress. Governments, international organizations, and other organizations are contributing to the development of water supply and sanitation systems. Water supply and sanitation challenges are linked to climate change effects and the quest for climate-resilient development. This paper evaluates the current challenges in water supply and sanitation development in developing countries and infrastructure resilience. The research is based on the data collected throughout the practical development task. Some of the findings were the climate change effect and temporary adaptation mechanisms, such as intermittent supply causing further pressure variation and water loss in the system. Resilient water supply and sanitation development require an integrated approach based on practical experiences, the latest technological development in water supply and sanitation system operation and management tools, and climate change adaptation. A seamless understanding of engineering, management, and technology is required for the development and management of water supply and sanitation systems. Dispersed skills may be available that were not effective at this time, which calls for a different approach to training provision and skill development as a package on design, management, and recent technological support.

Assessment of ERA5-Land Data in Medium-Term Drinking Water Demand Modelling with Deep Learning

Drinking water demand modelling and forecasting is a crucial task for sustainable management and planning of water supply systems. Despite many short-term investigations, the medium-term problem needs better exploration, particularly the analysis and assessment of meteorological data for forecasting drinking water demand. This work proposes to analyse the suitability of ERA5-Land reanalysis data as weather input in water demand modelling. A multivariate deep learning model based on the long short-term memory architecture is used in this study over a prediction horizon ranging from seven days to two months. The performance of the model, fed by ground station data and ERA5-Land data, is compared and analysed. Close-to-operative forecasting is then presented using observed data for training and ERA5-Land dataset for testing. The results highlight the reliability of the proposed architecture fed by ERA5-Land data for different time horizons. In particular, the ERA5-Land shows promising performance as input of the multivariate machine learning forecasting model, although some meteorological biases are present, which can be improved, especially in close-to-operative application with bias correction techniques. The proposed study leads to practical implications in the use of regional climate model outputs to support drinking water forecasting for sustainable and efficient management of water distribution systems.

Guidelines for Renewal and Securitization of a Critical Infrastructure Based on IoT Networks

Global warming has increased uncertainty regarding managing traditional water supply systems. Unfortunately, there is a need for the smart management of water supply systems. This work aims to design a solution for renewing and securing critical infrastructure that supplies water and provides water purification inside the range of applications of Industry 4.0 for Smart Cities. Therefore, we analyze the renewal requirements and the applicable use cases and propose a solution based on IoT networks for critical infrastructure in the urban environment. We describe the architecture of the IoT network and the specific hardware for securing a water supply and wastewater treatment chain. In addition, the water level control process for the supply chain and the system that ensures the optimal level of chemicals for wastewater treatment are detailed. Finally, we present the guidelines for infrastructure operators to carry out this operation within Industry 4.0, constituting a development framework for future research on the design of Smart Cities.

Changing epidemiology of Plasmodium vivax malaria in Nouakchott, Mauritania: a six-year (2015–2020) prospective study

BackgroundPlasmodium vivax malaria is one of the major infectious diseases of public health concern in Nouakchott, the capital city of Mauritania and the biggest urban setting in the Sahara. The assessment of the current trends in malaria epidemiology is primordial in understanding the dynamics of its transmission and developing an effective control strategy.MethodsA 6 year (2015–2020) prospective study was carried out in Nouakchott. Febrile outpatients with a clinical suspicion of malaria presenting spontaneously at Teyarett Health Centre or the paediatric department of Mother and Children Hospital Centre were screened for malaria using a rapid diagnostic test, microscopic examination of Giemsa-stained blood films, and nested polymerase chain reaction. Data were analysed using Microsoft Excel and GraphPad Prism and InStat software.ResultsOf 1760 febrile patients included in this study, 274 (15.5%) were malaria-positive by rapid diagnostic test, 256 (14.5%) were malaria-positive by microscopy, and 291 (16.5%) were malaria-positive by PCR. Plasmodium vivax accounted for 216 of 291 (74.2%) PCR-positive patients; 47 (16.1%) and 28 (9.6%) had P. falciparum monoinfection or P. vivax–P. falciparum mixed infection, respectively. During the study period, the annual prevalence of malaria declined from 29.2% in 2015 to 13.2% in 2019 and 2.1% in 2020 (P < 0.05). Malaria transmission was essentially seasonal, with a peak occurring soon after the rainy season (October–November), and P. vivax infections, but not P. falciparum infections, occurred at low levels during the rest of the year. The most affected subset of patient population was adult male white and black Moors. The decline in malaria prevalence was correlated with decreasing annual rainfall (r = 0.85; P = 0.03) and was also associated with better management of the potable water supply system. A large majority of included patients did not possess or did not use bed nets.ConclusionsControl interventions based on prevention, diagnosis, and treatment should be reinforced in Nouakchott, and P. vivax-specific control measures, including chloroquine and 8-aminoquinolines (primaquine, tafenoquine) for treatment, should be considered to further improve the efficacy of interventions and aim for malaria elimination.