(1) All swimming pools constructed after March 1, 2010 or operated by a municipality shall have a deck surrounding it that is a minimum width of six feet of unobstructed deck area as measured from the pool edge.

(2) All privately owned public swimming pools constructed prior to March 1, 2010 must be surrounded by a deck that has a minimum width of four feet of unobstructed deck area as measured from the pool edge.

(3) All spa decks shall be a minimum of four feet wide and shall extend around at least 50 percent of the unit perimeter.

(4) Decks surrounding other water features shall be appropriate to the use intended but shall, at a minimum, provide adequate space for emergency assistance.

(5) Deck areas are not required in vanishing edge pools at the overflow area. No pool or other water feature may have a vanishing edge that is more than 25 percent of the pool perimeter.

(6) Any waterfall or other feature that may obstruct a deck shall be reviewed, on a case-by-case basis, to determine whether the deck still meets minimum requirements.