The Guangdong-Hong Kong-Macao Greater Bay Area holds an important strategic position in the overall national development. Promoting the efficient and intensive use of water resources in the Greater Bay Area is an important measure to ensure water security and economic and social development in the region. This article analyzes the current water use situation of 2 special administrative regions and 9 prefecture-level cities in the Greater Bay Area

discusses the implementation of water conservation work in the cities of Greater Bay Area

and further explores the water-saving potential of the Greater Bay Area based on the main industrial characteristics of urban development. The results show that the future water-saving potential of the Greater Bay Area can reach 1.476 billion m

3

. It further proposes suggestions for water-saving strategies and measures for each city in the Greater Bay Area in order to provide reference for improving water resource security and implementing the rigid constraint system of water resources in the Greater Bay Ar

ea.