(a) Any accessory use or structure incidental and customary to the operation of the permitted uses and not involving the conduct of any business, trade, or industry may be permitted.
(b) Permanent private swimming pool, principally for the use of the residents, provided it shall be not less than twenty feet (20 ft.) from the property line of the property on which located and that permits shall be issued therefor by the Lorain County Board of Health and the Ohio Department of Health. Required plans shall be submitted to the health authorities. Such swimming pool on the immediate property on which it is located, shall be walled, fenced, or screened so as to prevent uncontrolled access from the street or adjacent properties.