To address inconsistencies in water use quota standards and the inadequate coverage of emerging industries in cross-regional water use quota management

this study established a cross-regional coordination mechanism

integrated and analyzed data from multiple sources

and conducted field investigations of representative industries. On this basis

92 water use quota values for 46 major products in the demonstration zone were systematically determined. Drawing on the practical experience gained

recommendations are proposed for improving the water use quota system

including establishing more effective mechanisms for the dynamic updating and evaluation of quotas

strengthening the sample data foundation and datasharing capacity

innovating quota formulation methods

and enhancing coordination between water-saving technologies and relevant standards. Ultimately

these findings provide a replicable institutional framework for cross-regional water conservation management

offering practical support for implementing the rigid constraints system for water resource and promoting the economical and efficient use of regional water resources.