The purpose of this ordinance is to zone the entire area of the City of Katy and the districts in accordance with a comprehensive plan for the purpose of promoting health, safety, morals and the general welfare of the general public. The regulations and districts herein established have been designed to lessen congestion in the streets; to provide safety from fire, panic, and other dangers; to provide adequate light and air, to prevent the overcrowding of land, to avoid undue concentration of population, to provide and facilitate adequate provisions for transportation, water, sewage, schools, parks and other public requirements. Said districts have been established with reasonable consideration of the character of the district and its peculiar suitability for the particular uses, and with the view of conserving the value of buildings and encouraging the most appropriate use of land throughout the community.