Rain Harvesting is the catchment and storing of rainwater for use in a later date. There are numerous reasons for owning a rainwater collection tank. Rainwater collected from roofs of houses can make an important contribution to the general availability of water as well as household water cost savings. Some individuals like the idea of not having to pay their utility company for water that is FREE. Others want to still be able to water their lawn despite watering restrictions in their area while some just want to contribute in things that provide a net positive impact on the environment. Whether your motivation is one or all of these, you need a rainwater harvesting tank to capture and store the rainwater.