In lieu of maintaining a fence or wall as above set forth, there may be provided a competent person who shall keep the pool or other body of water under observation at all times while water is kept therein. In the event the pool or other body of water is not under the observation of a competent person, a pool cover or similar protective device approved by the City Council may be used. (Ord. 1177 (part); December 10, 1957; Section renumbered by Ord. 1203; January 7, 1958.)