Regulation on the classification of ecological status, ecological potential, chemical status and the method of classifying the status of surface water bodies as well as environmental quality standards for priority substances

This Regulation establishes the criteria for classifying the ecological status, ecological potential, and chemical status of different types of homogenous parts of surface water, including natural watercourses, lakes, transitional waters, and coastal waters, while also defining the classification elements, interpretation methods, and frequency of assessment.