Chongqing's 'sponge garden' shows how to use rainwater

In 2015, the State Council, China's Cabinet, launched the sponge city pilot project, in which 30 metropolises are taking part. The aim of the project is that by 2030 around 80 percent of urban areas should be able to capture and reuse at least 70 percent of rainwater.

The sponge garden in Chongqing, with its sustainable water systems, can collect and purify rainwater runoff from approximately 2,000 square meters of impermeable ground in a local plaza. The stored water in the overflow ports of multiple gardens can directed to sustain plants, through a network of pipelines and sprinklers.