The owner of all houses, buildings, or properties used for human occupancy, employment, recreation, or other purposes, abutting on any street, alley, or right-of-way in which there is now located or may in the future be located a public wastewater system, is required at owner’s expense to install suitable facilities, and to connect such facilities directly with the proper public wastewater system in accordance with the provisions of this title, within 90 days after date of notice to do so, provided that the public wastewater system is within 300 feet of the property line or when a health hazard has been declared by the City Engineer. Pumping of such wastewater is not a valid reason for not making a connection.