It shall hereafter be unlawful to own, use, keep or maintain within the corporate limits of the city any cistern or cisterns, tub or tubs, barrels or other receptacles for the storing of water therein without having the top of such cisterns, tubs, barrels or other receptacles covered with a wooden or metallic cover or wire screen or material, or by two or more characters of coverings, so constructed and adjusted as to prevent any mosquitoes from entering into any such cisterns, tubs, barrels or other receptacles, or from coming in contact with the water therein. (Code 1941, Art. 86-42)