Complex sentence: It was commented by a Disney employee that a contributing reason for the closing was new state rules concerning water parks, in that pools and water activities must have their water originating from municipal water systems, not natural bodies of water.
Split into simpler sentences: It was commented by a Disney employee that a contributing reason for the closing was new state rules concerning water parks. Pools and water activities must have their water originating from municipal water systems, not natural bodies of water.