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Water resources are an essential and vital resource in chemical production, being widely used in processes such as raw material preparation, cooling, cleaning, and wastewater treatment. However, due to the complexity of water usage processes and the large number of devices involved, many enterprises face the challenges of unclear water usage patterns, difficulty in tracing waste, and errors in their water systems. The errors present in chemical water systems may be due to the following reasons: ① The accuracy of the measuring instruments varies, resulting in certain measurement errors among them. ②If the meter has a large accuracy error or is outside its range, it cannot accurately reflect the water consumption, resulting in measurement discrepancies in the water usage system. ③There is a certain amount of leakage loss in the pipeline. ④In some intermittent and temporary water usage points, metering devices are missing or the water flow is not measured, resulting in water loss in the water system. ⑤Online flow meters lack regular calibration, resulting in inaccurate measurement data. ⑥Without dynamic compensation using standard throttling flow meters, and with a relatively narrow measurement range, the measurement data becomes inaccurate. Three major risks of missing water meters: data distortion and a lack of a basis for management. Without accurate measurement, water usage is estimated based on experience alone, making it difficult to identify hidden wastes such as pipe leaks and inefficient equipment. Lack of accountability leads to difficulties in promoting water conservation; the water usage in workshops and production lines cannot be measured independently, which makes it hard to set specific water-saving targets and to assess progress. Information technology development is hindered by delayed decision-making. The digitalization of water management relies on real-time data, and the lack of measurement capabilities prevents the provision of data support for \"smart water management\". Enhance measurement advantages: In chemical production, water serves as a raw material, a cooling medium, and a carrier for waste. The absence of measuring instruments makes it impossible to accurately and effectively track water usage. Precise measurement is like the \"eyes of water resources\" and serves as the foundation for chemical companies to implement efficient water-saving management. In accordance with the requirements of the \"General Rules for the Installation and Management of Water Metering Devices in Water Users\" (GB24789-2022), the installation rate of instruments for primary water metering (metering of various water sources throughout the plant) must be 100% ； The instrumentation coverage rate for secondary water metering (metering of production water in various workshops and areas of the plant) should exceed 95% ； The installation rate for third-level water metering (metering of water usage for various equipment and facilities, as well as domestic water use) should reach 85%. Precise measurement helps reduce resource waste. By using high-precision water meters, flow meters, and other devices to monitor the amount of water used in production, circulation, and discharge processes in real time, it is possible to identify issues such as leaks in the piping systems and inefficient equipment, thereby reducing hidden water consumption (which can typically be reduced by 10%-30%). Data-driven water conservation optimization involves using metering data to identify processes with high water consumption, and implementing targeted technical upgrades (such as upgrades to closed-loop cooling systems). By combining these efforts with water balance testing, water allocation can be optimized, resulting in a reduction in water usage per unit of product. Compliance and cost control: Meeting the requirements of policies such as the \"Guidelines for Evaluating Water-Saving Enterprises\" in order to avoid fines for excessive wastewater discharge resulting from measurement errors ； Water conservation directly reduces operating costs such as water intake fees. Technological innovation and upgrading: By improving measurement facilities, it provides foundational data support for the development of enterprise smart water management platforms. It enables real-time collection of water usage data, sets up Internet of Things platforms for visual representation, and allows for real-time monitoring and analysis of data, thus facilitating a transition from managing water based on experience to managing it through data.