Description: The contiguous area of land and water immediately surrounding a surface water intake, which includes: the distances from the intake (IPZ1, 120m inland and 1000m on water); a minimum travel time of the water associated with the intake of a municipal residential system or other designated system, based on the minimum response time for the water treatment plant operator to respond to adverse conditions or an emergency (IPZ2, 2hr time of travel); and the remaining watershed area upstream of the minimum travel time area (also referred to as the Total Water Contributing Area) - applicable to inland water courses and inland lakes only (IPZ3) The data will be final once the Assessment reports are approved.