Lebanon is approaching the red zone as far as fresh water resources are concerned. The mismanagement of the water sector exacerbates this dire situation which may get worse due to two main factors namely climate change and population increase.

The present document offers detailed guidelines, technical and commercial information on how to size and implement rainwater harvesting systems in rural and urban settings mainly for domestic applications and external uses as applied to residential units, schools, hospitals and any other facility where domestic uses of water are found.