RAINWATER HARVESTING AND UTILIZATION

Abstract

Water is a vital element in human life. Requirement of pure and clean fresh water is undeniable in daily life. All over the world this water is extracted from underground and surface sources. Continuous extraction of underground water with inadequate renewal leads to fall of water level. For meeting the needs WASA extracts underground water to a large scale (87%) in comparison to surface water (13%). Thus the groundwater level in the capital has dropped by six meters in the last seven years. The capital's groundwater level had now dropped to 52 meters below mean sea level (MSL). Last year the level has dropped by one meter. If this situation continues in this manner in near future water level will drop to such a level that prompts to natural disasters like: landfall, earthquake, emerging of salty sea water into the underground etc. In our rural and urban areas scarcity of drinkable water and arsenic free water has reached its peak situations. In rural areas people has to depend on deep tube-wells and on pond, river, canals etc. In most cases the underground water is affected by arsenic and the surface water is dirty and unhygienic. On the other hand, rainwater throughout the year causes many municipal and others problems. For example flooding and damaging roads and constructions etc. If we could collect this abundant water and use them in our daily life we surely can reduce these problems, besides relief the underground water level from going down. This project will hopefully be a partial solution to these problems and contribute to the greater interest of the nation. This is a mini project; from this project we will have an overall idea of the contribution of harvesting rain water.