Rain gardens can be utilized to do which of the following?

Rain gardens can increase groundwater recharge by capturing, slowing, and infiltrating rainwater close to where it falls. In LEED Sustainable Sites, rainwater management strategies aim to restore natural hydrology, reduce runoff volume, improve water quality, and limit downstream erosion and pollution. Rain gardens are a low-impact development strategy that uses vegetation, soil, and shallow depressions to absorb and filter runoff from roofs, walkways, and paved areas. Increasing soil erosion is incorrect because rain gardens help control erosion by slowing runoff. Increasing peak runoff is also incorrect because rain gardens reduce runoff rates. Graywater is wastewater from indoor sources such as showers and laundry; rain gardens manage stormwater, not graywater. Properly designed rain gardens support infiltration, aquifer recharge, and healthier site ecology.