There are several reasons to use a rainwater collection system. In areas with heavy rainfall where drainage is an issue, these systems can help mitigate the problems caused by flooding. All climates, including arid, can benefit by capturing rainfall and harvesting the water for reuse. Reusing water can save money and provide environmental benefits.
Another advantage of underground rainwater collection systems, not designed for harvesting, is that they can replenish the groundwater. Water shortages and the decrease in our ground water are among the planet’s biggest environmental concerns today.