As the mercury soars, water has already become precious in may parts of the Capital but according to scientists, water will be one of the rarest commodities in a couple of years as all the underground sources of water in the Capital are drying up at an alarming pace. According to a recent study conducted by the hydrologists at the Nuclear Research laboratory in IARI , the underground water level in the capital is going down by at an average of 0.4 metres every year.