Members of the Indian Water Works Association (IWWA). the Institution of the Public Health Engineers (India), and representatives from non-governmental organisations have come together to deliberate on the crucial issue of water conservation through public participation. At a meeting here on Saturday, most of the public health engineers and experts agreed that the Capital with a projected daily requirement of more than 945 mcd per day by the turn of the century is in urgent ned of water conservation either through the harvesting of rainwater or the optimum use of drinking water.