For purposes of this section, a "swimming pool" shall mean any above-ground, below-ground, temporary or collapsible structure more than two feet in height, and/or capable of holding more than 5,000 gallons of water for swimming, play or other recreational purposes. A "structure" less than two feet in height and/or capable of holding less than 5,000 gallons of water shall not be a "swimming pool" for purposes of this section.