<prompt> Safe yield of a water supply source is the yield that is adequate for?80 of the year90 of the year95 of the yearThe whole of the year  <response>: Water for meeting the requirements of a community can be obtained from various sources like rain, surface water and groundwater. The safe yield of a source of water is defined as the yield that is adequate for 95 of the year. Ref: Parks Textbook of Preventive and Social Medicine, 20th edition, p617 