Rainwater harvesting is the collecting of rainwater. You can collect rainwater from a roof, which is the most common method, and store it in a catchment tank, such as a rain barrel.
A Brief History of Rainwater Harvesting
Before there were public water utilities, many American households harvested rainwater. With the development of large, reliable water treatment and distribution systems, the appeal of rainwater harvesting diminished. However, a new interest in rainwater harvesting has emerged.
Reasons for Harvesting Rainwater
The water is free
Harvested rain water can be used to water container plants, landscapes and gardens
Rainwater harvesting can help reduce flow to storm water drains and reduce stream pollution