BMC's standing committee on Tuesday gave an in principle approval for $220 Million USD desalination project aimed at meeting increasing demand of water for Mumbai. Currently, Mumbai is supplied with water through seven different reservoirs some of them have been built since British times. Due to this project, sea water will be made potable for needs of Mumbai. As water storage in these dams depends on the rainfall in that area. Due to global climate change, delays in the monsoon rains in the last few years have led to a 10 to 20 per cent water shortage in Mumbai. In contrast, the demand for water in the metropolis is constantly increasing.