Which method is effective for improving stormwater quality?

Installing vegetated swales is an effective method for improving stormwater quality because these systems are designed to manage runoff while promoting natural filtration processes. Vegetated swales are shallow, grassy channels that slow down the flow of stormwater, allowing it to infiltrate into the ground rather than running off immediately into storm drains or waterways.

The vegetation within the swale plays a crucial role in absorbing pollutants, capturing sediments, and providing habitat for various species. By filtering debris and contaminants from the water, these swales enhance overall water quality and help minimize the risks of flooding and erosion. Additionally, swales can help recharge groundwater, further benefiting the environment.

This method aligns with sustainable stormwater management practices, which prioritize using natural systems for stormwater treatment. Consequently, the selection of vegetated swales as a solution highlights the importance of green infrastructure in enhancing stormwater management strategies.