This article deals with the Rainwater Harvesting, its classifications, contents, components, benefits and some parameters (conductivity, pH, fecal coliform, total coliform). As an experimental trial to study these parameters on the site for rainwater
collecting. It also trial to study the quantity of rainwater harvesting from
roof buildings, and study the potential savings when reusing this storing and collecting water for non-potable purposes such as (flushing toilet, stairs washing, cars washing and watering the garden…). Witch the result of research showed that saved ratio may be reach to 40%. This study showed that reusing the Rainwater Harvesting has a great role in reducing the wasted water, and it also provides the required house needs of fresh water. Consequently this comes back with a great benefit on the individuals and on the society from the economical and environmental aspects.
