A private swimming pool is any pool, lake or open tank not located within a completely enclosed building and containing or normally capable of containing water to a depth at any point greater than .5 meters (1 feet). No such swimming pools, exclusive of portable swimming pools with a diameter less than 3.7 meters (12 feet) or with an area of less than 9.3 square meters (100 square feet), shall be allowed in any commercial or residential district except as an accessory use and unless it complies with the following additional requirements:
(a) The pool is intended and is to be used solely by the occupants and guests of the principal use of the property on which it is located;
(b) It may not be located, including any walks or paved areas or accessory structures adjacent thereto, closer than 3 meters (10 feet) to any property line of the property on which located;
(c) The pool, or the entire property on which it is located, shall be so walled or fenced so as to prevent uncontrolled access by children from the street or from adjacent properties. Such fences or wall shall be at least 1.5 meters (5 feet) in height and maintained in good condition, with a gate and lock.