A study looked at how well a constructed wetland can clean up stormwater in a residential area in Chongqing, China. They found that the wetland did a good job of purifying the water, even during heavy rainfall. The water quality after treatment met the standards for scenic environments. The wetland could handle sudden increases in water flow, but it's important to have a detention tank to prevent overflow and protect structures. This research helps design better stormwater treatment systems for residential areas.