Rainwater cisterns are a great way to collect large amount of water to reuse in your home are garden — unfortunately most cisterns are very big, have a large footprint and typically don't look very good... It's this problem that RainXchange is going to solve: underground rainwater collection. It easily integrates into landscaping and is perfect for those who don't like the look of a cistern or who are tight on space.
The Aquascape RainXchange is a subsurface rainwater harvesting system that filters and stores rainwater with zero-footprint. By using a fountain-like feature integrated into your landscape, the water is constantly recirculated to prevent stagnation and bacteria growth.
The RainXchange system works by connecting your downspouts to a collection tank, which is then directed to a series of modular underground basins where the water is filtered and stored. The basins are modular to accommodate a variety of site applications and sizes. To keep the water constantly moving it is recirculated through a decorative pond or water fountain that is run by a very high efficiency pump. The system can be installed under landscaped areas or even under permeable pavers as additional means of capturing stormwater. The RainXchange system can be used with a simple hand-held hose irrigation or even connected to more complex irrigation systems. Any water overflow or excess is simply redirected and absorbed by underground soil.
According to Aquascape 1-inch of rainfall on a 2,000 square-foot residential roof generates 1,250 gallons of water that can be reused; that same roof in a region receiving 30-inches of annual rainfall generates 41,000 gallons of reusable water. That's a lot of water to reuse!
The benefits are numerous: a decorative water feature instead of a large ugly cistern, and rainwater collection with no above-ground footprint. Collecting rainwater not only reduces the need for fresh potable water for landscaping and grey water uses, but it also reduces demand on municipal water systems.
(Images via RainXchange)