One of the applications of SkyHarvesting is assessing the reliability of  typical RWH systems over large regions, and a feature of water recycling can be added (defined as the amount of rainfall that is recycled based on non-toilet water uses).

 

For example, we evaluated how a typical RWH system (1000 gallon tank, 1250 sq ft. catchment area, and a constant daily demand of 210 gallons/day for a 3-person household) performed across the US.   The image below shows the results of the calculations with and without recycling. Most areas of the country remained below 50% demand satisfaction throughout the year without recycling. Adding a recycled component made RWH much more attractive for many counties, with greater than 70% reliability for much of the year in the Northeast, Mid-Atlantic, Southeast, and Midwestern states.