The zoning regulations and districts as herein established are deemed necessary and proper by the Town Council of the Town of Georgetown and are made in accordance with a comprehensive plan and design to lessen congestion in the streets; to secure safety from fire, panic and other dangers; to promote health and the general welfare; to provide adequate light and air; to prevent the overcrowding of land; to avoid undue concentration of population; and to facilitate the adequate provisions of transportation, water, sewerage, schools, parks and other public requirements of the Town of Georgetown.