The Rain Centre functioning as part of KRWSA was constituted in the year 2004 to promote Rain Water Harvesting in the State. The initiation to constitute Rain Centre was the severe drought that hit the State during that time. Initially the Centre was focusing on promoting the concept of Rain Water Harvesting through IEC activities along with training programmes conducted across the State. Demo RWH tanks of various capacities were constructed in public institutions with the idea of disseminating the Ferro- cement technology to the general public.

Initially, World Bank assistance and MGP funds were provided for promoting Rain Water Harvesting activities. Considering the importance of inculcating the habit of rain water harvesting as an alternate source of water among people, a detailed proposal was submitted to the Planning Board for including it in the 12th Five Year Plan. The proposal was approved and budget allocation was sanctioned from the first year of 12th Plan.
Scaling up of roof top Rain Water Harvesting programme with the component of Ground Water Recharge was found suitable for the individual households as an alternative method for providing drinking water and gradually improving the water table. The programme is well accepted by the people in State, especially those who are living in hilly, costal and remote areas with limited access to potable water.

During the last five years the Centre was assisting individual households and schools to construct RWH structures with the primary objective of minimizing the drinking water issues. The secondary objective of popularizing the concept of Rain Water Harvesting is also promoted among the general public and the student community. The programme is implemented utilizing Plan fund provided in the annual budget every year.

Many of the Grama Panchayths, especially the ones belonging to hilly and coastal regions are seriously planning to adopt RWH as a technology option to solve the drinking water issues of their GPs. Similarly, many institutions with demand for large quantity of water have evinced interest in establishing rain water harvesting units as an additional source of drinking water.

Considering the increasing demand for RWH and as an alternative and or additional source of water, it is essential that financial support must be extended from Government at least till such time that the technology gains wide acceptance.