Real-Time Water Quality Monitoring Systems Using IoT Technologies

Increasing anthropogenic pressures on freshwater resources and the need for sustainable management have driven the development of real-time water quality monitoring systems that leverage Internet of Things (IoT) technologies. Such systems comprise networks of miniaturised sensors, communication modules and centralised data platforms, enabling continuous acquisition and transmission of critical parameters – including pH, temperature, dissolved oxygen, turbidity and conductivity – with minimal human intervention. By deploying sensor nodes in drinking‐water distribution networks, rivers, lakes or coastal areas, stakeholders can gain instantaneous insights into water quality dynamics, detect contamination events and respond promptly to emerging hazards. Integration with cloud and edge computing infrastructures allows for scalable data storage, advanced analytics and machine‐learning‐based anomaly detection, enhancing predictive maintenance and resource allocation. Energy‐harvesting techniques, low‐power wireless protocols and robust enclosures ensure long‐term autonomous operation in harsh environments. Collectively, these IoT-enabled architectures offer a cost-effective, decentralised alternative to conventional laboratory-based analyses, promising improved spatial coverage, higher temporal resolution and more timely decision-support for regulators, utilities and community users worldwide.

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Real-Time Water Quality Monitoring Systems Using IoT Technologies publication trend

The graph below shows the total number of articles in real-time water quality monitoring systems using iot technologies across all publications each year (not limited to Nature Index journals).

Technical terms

Internet of Things (IoT): A network of interconnected devices equipped with sensors and communication modules that collect, exchange and process data over the internet.

Wireless Sensor Network (WSN): A distributed assembly of spatially dispersed sensor nodes that autonomously monitor environmental parameters and transmit data wirelessly.

Electrochemical sensor: A device that quantifies chemical analytes—such as pH or dissolved oxygen—by measuring electrical signals generated by specific redox reactions.

Cloud platform: A remote computing infrastructure providing data storage, processing capabilities and application services accessible via the internet.

References

1. IoT Based Smart Water Quality Monitoring: Recent Techniques, Trends and Challenges for Domestic Applications. Water (2021).
2. Recent Advances in Information and Communications Technology (ICT) and Sensor Technology for Monitoring Water Quality. Water (2020).
3. On the Use of an IoT Integrated System for Water Quality Monitoring and Management in Wastewater Treatment Plants. Water (2020).
4. A system for monitoring water quality in a large aquatic area using wireless sensor network technology. Sustainable Environment Research (2019).
5. Smart Water Resource Management Using Artificial Intelligence—A Review. Sustainability (2022).