Abstract: This paper explores in depth the close interconnections and shared development trends among smart water management, intelligent water meters, and smart cities. First, it outlines the fundamental concepts and characteristics of smart cities, with a particular emphasis on the role of smart water management as an essential component of smart cities. Next, it provides a detailed analysis of the operating principles and current application status of intelligent water meters, highlighting their critical role in smart water management. Furthermore, the paper examines the specific requirements of smart water management for intelligent water meters and explores the potential of these meters to enhance the efficiency and effectiveness of smart water management. Additionally, through real-world case studies, it sheds light on both the challenges and opportunities associated with the deployment of intelligent water meters in smart cities. Finally, the paper offers a forward-looking perspective on the future development of smart water management and intelligent water meters, predicting that, driven by both technological advancements and market demand, these two areas will increasingly support the intelligent, efficient, and sustainable development of cities. As related technologies continue to innovate and application scenarios keep expanding, smart water management and intelligent water meters are expected to play an even more pivotal role in the urbanization process.

Smart cities have become a key direction for the development of modern urban areas, as the urbanization process continues to accelerate and information technology evolves at an unprecedented pace. As an important component of smart city development, smart water management plays a crucial role in alleviating water resource shortages and enhancing the efficiency of water resource utilization. By leveraging advanced information and intelligent technologies, smart water management systems can achieve efficient water resource management and deliver high-quality services. As one of the critical pieces of equipment in smart water management systems, smart water meters enable real-time monitoring and recording of water consumption, providing precise data support for water resource management. Therefore, studying smart water and smart meter technologies within the context of smart city development holds significant theoretical and practical value for promoting the sustainable use of urban water resources and fostering the healthy development of smart cities. This paper aims to offer references and insights for research and practice in related fields, exploring the important roles and promising applications of smart water management and smart water meters in the construction of smart cities.

1 Overview of Smart Cities and Smart Water Management

1.1 The Concept and Characteristics of Smart Cities

As a cutting-edge and continuously evolving concept, the “smart city” was first discussed as one of the key themes at an international conference held in San Francisco, California, USA, in 1990. It primarily refers to the intelligent transformation and upgrading of urban operations, management, and services through the use of advanced information and communication technologies (ICT), such as the Internet of Things (IoT), cloud computing, big data analytics, and artificial intelligence (AI). Smart cities not only focus on the integration and application of these technologies but also place great emphasis on how they can enhance the quality of urban life, improve efficiency, and promote sustainability. At its core, a smart city aims to build a comprehensively interconnected, intelligently sensing, and collaboratively operating urban ecosystem that achieves efficient utilization of urban resources, environmental livability, and harmonious social development. Giffinger et al. have developed a more profound conceptual framework for smart cities, which encompasses six key dimensions: smart economy, smart population, smart governance, smart mobility, smart environment, and smart living (see Table 1 for details). As an important conceptual framework tailored to China’s national conditions, the smart city reflects the real needs of China’s urban economic and social development and has ushered in a new stage of high-quality development for China’s smart cities. Its main characteristics are as follows:

(1) Comprehensive Informatization: Smart cities have extensively deployed sensors and smart devices across various sectors, enabling the digitalization and sharing of all aspects of urban life. This has overall enhanced the efficiency and quality of urban development, leading to significant improvements and enhancements in areas such as urban transportation, energy, environment, and public safety.

(2) High Intelligence: Smart cities, leveraging big data analytics technologies and AI-powered intelligent algorithms, can perform intelligent processing and applications based on the analysis of massive datasets, providing robust, science-based decision support for urban management and services.

(3) Continuous Innovation: The smart grid for cities encourages the continuous innovation and application of technologies to meet the rapidly evolving needs of urban development, thereby maintaining the city’s vitality and competitiveness and playing a crucial role in promoting its sustainable development.

(4) People-centered approach: The cornerstone of building a smart city is to focus on human needs and to study urban operations and development issues from a human-centered perspective. A people-centered smart city is committed to meeting diverse human needs and providing high-quality urban services.

(5) Safe and Reliable: To ensure the safe and reliable operation of the city and provide citizens with a secure and stable living environment, smart cities place great emphasis on information security and cybersecurity.

(6) Sustainable Development: Emphasizing resource conservation and environmental protection to promote urban sustainable development, smart cities underscore the coordinated development of economy, society, and environment.

Table 1: Framework of the Concept of Smart Cities

1.2 The Connotation and Development of Smart Water Management

Smart water management has become an essential component of today’s urban development. As technology continues to advance and the pace of urbanization accelerates, smart water management—a trend that embodies the deep integration of the water industry with information technology—has a rich and multifaceted nature, bringing about revolutionary changes in areas such as urban water resource management, water supply, drainage, and wastewater treatment.

The essence of smart water management is primarily reflected in the following aspects:

(1) Technological Convergence: Smart water management leverages next-generation information technologies such as the Internet of Things, cloud computing, big data, and artificial intelligence to achieve intelligent, automated, and highly efficient water systems. These technologies provide robust support to the water industry in areas such as data processing and decision-making analysis.

(2) Data-driven approach: Smart water management emphasizes the value of data. By collecting, transmitting, storing, and analyzing water-related data in real time, it uncovers patterns and trends hidden within the data, providing a scientific basis for water management.

(3) Business Collaboration: Smart water management enhances overall operational efficiency by fostering synergistic cooperation among different water management functions, breaking down information silos between departments, and enabling seamless data exchange and interconnection.

(4) User Experience: Smart water management emphasizes user experience and service quality, providing users with more convenient and efficient services through a smart service system.

From early automation control to today’s intelligent management, the development of smart water services has gone through several stages, and its trends are mainly reflected in the following aspects:

(1) Technological Upgrades: Starting from the current technological level, leveraging 5G communications as a foundation, edge computing as a core component, and blockchain as a connecting link, we will continuously upgrade technologies in the smart water management sector to further enhance the intelligence of water management systems.

(2) Data Governance: In the context of the new data-driven era, data governance has become a crucial direction for the development of smart water management. While enhancing data quality management, data security assurance, and data-sharing capabilities, it also ensures the accuracy and availability of water management data. By carrying out various initiatives, we can guarantee the smooth operation of smart water management systems.

(3) Business Innovation: Under the guidance of smart water management, the water industry will continue to pursue business innovation and development—such as the implementation of intelligent water supply systems, the development of smart drainage systems, and the continuous improvement of intelligent wastewater treatment technologies. While enhancing the overall efficiency of the water industry, these innovations will also provide citizens with higher-quality water services. Driven by smart water management, the water industry will keep forging ahead on a path of continuous innovation.

(4) Smart Decision-Making: A smart water management system, leveraging big data analytics technologies and AI-powered intelligent decision-making algorithms, can provide scientific and accurate decision support, thereby offering robust guarantees and significantly improving and upgrading water resource management.

Making urban water resource management more efficient, smarter, and sustainable is the essence and development trend of smart water management. By adopting new technologies, strengthening data governance, fostering business innovation, and enhancing the level of intelligent decision-making, we can effectively address the challenges in urban water resource management, provide strong support for promoting urban sustainable development, and steer urban water resource management toward smart practices.

1.3 The Position of Smart Water Management in Smart City Development

Smart water management plays a pivotal role in smart city development. As an essential component of smart city construction, smart water management not only affects the daily lives and water security of urban residents but also plays a critically important role in promoting the sustainable development of cities. While providing urban residents with high-quality, safe, convenient, and efficient water services, smart water management also offers strong support for the sustainable development of cities. Therefore, in the context of smart city development, it is imperative to step up efforts to build smart water systems and accelerate the digital transformation of the water industry—this is an inevitable choice as smart city development continues to advance.

2. Application Principles and Current Technical Status of Smart Water Meters

2.1 Technical Principles of Smart Water Meters

Smart water meters primarily use built-in sensing elements to monitor water flow and transmit the data to a processing system for analysis and recording. The data is then sent to a remote server via wireless or wired communication, enabling precise measurement and monitoring of water usage.

2.2 Current Status of Smart Water Meters’ Application at Home and Abroad

Currently, there are significant differences and diverging development trends in the application of smart water meters both domestically and internationally.

In China, the application of smart water meters is becoming increasingly widespread, particularly in urban water supply systems. As smart city development progresses, smart water meters not only enhance the efficiency of water resource management but also help reduce water waste and improve the quality of water supply services. Moreover, the government’s growing emphasis on energy conservation, emission reduction, and water resource protection has further boosted market demand and adoption of smart water meters, thereby expanding their scope of application even more.

In contrast, foreign countries started earlier in the application of smart water meters and have developed more mature technologies. Smart water meters have been widely adopted in residential, industrial, and commercial sectors, particularly in the European and North American markets. In these regions, smart water meters not only perform basic metering functions but also integrate advanced smart technologies such as remote monitoring and data analysis and prediction. The widespread adoption of these technologies provides strong support for sustainable urban development and further enhances the intelligence level of water resource management.

In summary, smart water meters are widely adopted both domestically and internationally; however, overseas water meters boast higher technological standards and greater maturity in application. As technology continues to advance and the market keeps expanding, the future prospects for smart water meter applications will become even brighter.

2.3 Case Study Analysis of Smart Water Meters in Smart Water Management

The practical application of smart water meters in smart water management provides strong support for water resource management and urban sustainable development.

Take Ningbo as an example: the city has introduced an advanced smart water meter system, comprehensively upgrading its urban water supply system. These smart water meters not only offer the basic measurement functions of traditional water meters but also enable real-time monitoring of key parameters such as water flow and water pressure, and transmit the data to a cloud platform for analysis and processing.

Ningbo has successfully implemented real-time monitoring and intelligent management of its water supply system. By deploying smart water meters, city administrators can quickly identify potential problems in the water supply system and promptly carry out repairs and maintenance based on real-time data, ensuring a stable and safe water supply.

In addition, smart water meters provide strong support for Ningbo’s water resource management and energy-saving and emission-reduction efforts. By analyzing and processing water consumption data, city administrators can accurately grasp water usage patterns in various districts, develop rational water supply plans, and effectively reduce water waste.

3. Requirements Analysis for Smart Water Meters in Smart Water Management

3.1 Demand Analysis for Smart Water Meters in Smart Water Management

As a new model for modern urban water management, smart water utilities are increasingly in demand for intelligent water meters. With the acceleration of urbanization and the growing scarcity of water resources, traditional water meters can no longer meet the requirements of contemporary water management. As one of the core devices of smart water utilities, intelligent water meters—equipped with data collection, transmission, and analysis capabilities—provide robust technological support for water management.

First, smart water management requires intelligent water meters to achieve real-time monitoring and data collection, enabling us to grasp the operational status of urban water supply systems and monitor water usage patterns. By analyzing data from these intelligent water meters, we can promptly detect issues within the water supply system—such as leaks or abnormal pressure—and swiftly take corrective measures to ensure the stable operation of the water supply system.

Second, in smart water management, smart water meters are essential for providing accurate data that enables the development of rational water supply plans and resource allocation strategies. By analyzing the data collected by smart water meters, we can forecast future water demand, thereby optimizing water supply schemes, improving supply efficiency, and reducing water waste. Consequently, smart water meters play a crucial role in smart water management.

3.2 Application Value of Smart Water Meters in Intelligent Water Management

Smart water meters hold significant value for the management and application of smart water systems. First, smart water meters enable precise metering, providing water management authorities with decision-support tools that help optimize water resource allocation, enhance supply efficiency, and deliver accurate water consumption data. Second, smart water meters feature real-time monitoring capabilities, allowing them to promptly detect abnormalities in the water supply system, such as leaks and pressure fluctuations. This enables managers to swiftly take corrective actions while minimizing water waste and ensuring the safety of water supply. Additionally, smart water meters facilitate remote monitoring and management by reducing costs associated with manual inspections and improving overall management efficiency. Furthermore, through data analysis, smart water meters can forecast water demand, providing a scientific basis for optimizing water distribution and enhancing the quality of water supply services. Therefore, promoting the shift of urban water management toward intelligence and efficiency makes the role of smart water meters in smart water management irreplaceable and highly significant.

4. The Practice and Challenges of Smart Water Meters in Smart Cities

4.1 Real-world application cases of smart water meters in smart cities

As a key component of smart city development, smart water meters play an important role in enhancing the efficiency of water resource management, promoting energy conservation and emission reduction, and driving sustainable urban development. Ningbo, a leading hub for smart city construction, has already widely adopted smart water meters to improve the efficiency and quality of water resource management.

First, the application of smart water meters has played an indispensable role in Ningbo’s excellent water supply system. Smart water meters not only enable functions such as meter reading, billing, and anomaly alerts, but also, through IoT technology, allow for real-time data exchange with the municipal water company. This enables analysis of residents’ water consumption habits and provides personalized water-use recommendations. This data-driven management approach has enabled the municipal water company to gain a more precise grasp of water supply conditions, optimize the operation of the water network, and enhance both the efficiency and reliability of water delivery.

Secondly, the adoption of smart water meters for agricultural irrigation in the Ningbo region plays a crucial role. These meters leverage IoT technology and sensor devices to monitor in real time data such as soil moisture and temperature in farmlands, and then provide feedback to farmers, enabling them to adjust irrigation volumes appropriately and achieve precise irrigation. This not only prevents waste of water resources but also enhances both the yield and quality of crops, thereby promoting sustainable agricultural development. With the help of smart water meters, farmers can now manage their irrigation efforts with confidence and precision.

In addition, smart water meters play a pivotal role in Ningbo’s smart city water resource management system project. The smart drainage digital twin system in Ningbo High-Tech Zone is built on the foundation of geographic information systems and the internet, and leverages big data and cloud computing technologies to achieve intelligent and refined drainage management. As a key data-acquisition terminal, smart water meters provide this system with real-time, accurate water-use data, enabling the system to effectively monitor and manage drainage conditions. This not only enhances the efficiency of water management but also improves the utilization rate and quality of water resources.

4.2 Challenges and Issues Facing Smart Water Meters in Smart City Applications

Although smart water meters hold great promise and have considerable potential for application in smart cities, they still face numerous challenges and issues, primarily in the following areas:

(1) Lack of Technical Standards and Specifications: Currently, there is no unified understanding or systematic framework for smart water meters, nor are there established technical standards and specifications for smart water management. This leaves enterprises facing numerous uncertainties in the process of promoting and deploying smart water meters. The absence of clear guidelines and standardized practices hinders the widespread adoption of smart water meters and affects the evaluation of their effectiveness.

(2) Challenges in Data Collection and Processing: Although smart water meters can generate vast amounts of data, effectively collecting, processing, and analyzing this data remains a significant challenge. Subsequent analysis and decision-making steps are directly influenced by the quality, frequency, and accuracy of the data. Moreover, compatibility issues among different software systems further complicate data circulation and sharing, leading to data silos that constrain the further development of smart water management. As a result, the advancement of smart water management faces enormous challenges.

(3) Data Security and Privacy Protection: The aquaculture industry involves vast amounts of data. How to ensure users’ privacy and data security while leveraging this data is a critical issue. During data transmission and exchange, there is a risk that data may be altered, modified, lost, or leaked. Therefore, it is essential to adopt effective technical measures and management practices to safeguard data security.

(4) Aging infrastructure and weak management: In some areas, issues such as aging and poorly maintained water supply networks and low intelligence levels of water meters persist. This not only hampers the promotion and effectiveness of smart water meters but also increases management difficulties and elevates operational costs.

(5) Insufficient professional talent and technical support: The application of smart water meters requires specialized technical personnel for installation, maintenance, and management. However, there is currently a shortage of qualified water management professionals and IT staff, and the level of information-based management still needs to be improved. Therefore, as smart water meters are increasingly integrated into and developed within smart cities, these shortages in professional talent and technical support are becoming increasingly apparent.

5 Future Development Trends in Smart Water Management and Intelligent Water Meters

5.1 Policy Support and Market Impetus

The future development trend is highly promising for smart water management and intelligent water meters. As governments increasingly emphasize water resource management and smart technologies, a series of policies—including the “Action Plan to Promote Large-Scale Equipment Upgrades and Trade-In Programs for Consumer Goods”—have been introduced, providing strong support for the development of smart water solutions and intelligent water meters. These policies not only encourage enterprises to research, develop, and promote smart water technologies but also facilitate the widespread adoption of smart water management systems and intelligent water meters by reducing market application costs through measures such as financial subsidies.

Meanwhile, the integrated development of smart water management and intelligent water meters is also driving the growing market demand. As urbanization accelerates, the shortage of water resources is becoming increasingly severe, and smart water management has emerged as a crucial tool for addressing challenges in water resource management and utilization. Intelligent water meters enable precise metering, real-time monitoring, remote management, and other functions, thereby enhancing both the efficiency of water resource utilization and the level of management. Consequently, driven by continuous innovation in technology and applications, the market demand for intelligent water meters will continue to grow.

5.2 The Integrated Development of Smart Water Management and Intelligent Water Meters

The integrated development of smart water management and intelligent water meters will be the future direction of development and an inevitable trend for the years to come.

First, with the continuous proliferation of advanced technologies such as IoT, big data, and cloud computing, the integration between smart water meters and smart water management systems will become increasingly close. Smart water meters serve as the primary data collection point for gathering water consumption data, and through IoT technology, they can transmit data remotely and enable real-time monitoring and analysis. By leveraging these capabilities within smart water management systems, we can gain a deeper understanding of water usage patterns and develop and implement targeted water supply strategies. This approach focuses on enhancing service quality and ultimately achieving customer satisfaction.

Second, in the integrated development of smart water management and intelligent water meters, deep mining and analysis of water management data can provide robust support for the operations and decision-making of water utilities, thereby facilitating digital transformation and intelligent upgrades. Taking the use of intelligent water meters as a starting point and leveraging smart water management systems as a foundation, features such as remote meter reading, online payment, and fault alerts will significantly enhance work efficiency and service levels. Therefore, the integrated development of smart water management and intelligent water meters not only promotes digital transformation and intelligent upgrades but also strongly drives the overall transformation and upgrading of the water industry.

Moreover, driven by technological advancements, smart water meters and intelligent water management systems have achieved new breakthroughs in both functional refinement and performance enhancement. Built on more precise metering and richer data collection, and supported by intelligent water management systems for data analysis and forecasting, these technologies enable deeper insights and more effective utilization of data. As a result, the comprehensiveness and precision of water resource management have been further improved.

Due to space limitations, the footnotes have been omitted. For the complete version, please visit ShuiBiao.com for free access.

Source: Ningbo Donghai

Authors: Yuan Xiaping, Xu Ninglei, Zhang Qinyun, Zhang Xuechang

Editor: Li Jingshuai

First Instance: Zhou Qi

Second Instance: Zhan Zhijie