In a function held in Kurunagala yesterday, (20) Minister of Urban Development, Water Supply and Drainage Rauff Hakeem said, that the necessity has arisen to increase water tariffs in future. To purify 1,000 litre of water, Rs 48 is incurred as against Rs 12 charged to consumers. In other words only ¼ of the cost is recovered from consumers. Treasury does not grant funds to the Water Resources Board. We maintained water supply services by obtaining loans from outside. Hence in order to re pay a loan, a small increase will be introduced. But he ensured no charges will be made from Samurdhi beneficiaries.