Existing Water Resources

Currently, Hong Kong has a 4-pronged water supply system, comprising rainwater from local catchments, imported water from Dongjiang in Guangdong, desalinated water and seawater for toilet flushing respectively accounting for 17%, 60%, 1% and 22% of the total water consumption of 1,368 million cubic metres in 2024. With these four water sources, Hong Kong has been enjoying reliable water supply over the years.

 

New Water Resources

To better prepare Hong Kong for the challenges of climate change and increasing demand for fresh water due to rapid population and economic growth, and competition for water resources in the Pearl River Delta region, we have been developing new water sources which are not susceptible to climate change, including seawater desalination and recycled water (viz. reclaimed water, treated grey water and harvested rainwater).