Which project design can assist with both rainwater management and municipal water use reduction?

Rainwater harvesting is a design strategy that effectively addresses both rainwater management and the reduction of municipal water use. This approach involves the collection and storage of rainwater from roofs, which can then be repurposed for various non-potable uses such as irrigation, toilet flushing, and other water needs within a building or landscape.

By capturing rainwater, projects can significantly decrease reliance on municipal water supplies, which is particularly beneficial in areas facing water scarcity. Additionally, this method helps manage stormwater runoff, reducing the risk of flooding and erosion while promoting groundwater recharge.

Green roofs primarily focus on insulation and managing heat, while also providing some rainwater retention, but they do not capture water for reuse. Pervious pavement allows water to infiltrate but does not necessarily harvest water for use. Xeriscaping emphasizes water-efficient landscaping but does not involve the collection of rainwater. Therefore, rainwater harvesting stands out as the most effective solution that integrates both aspects of water management.