(1) Outdoor swimming pools and spas shall be located where they will not be exposed to excessive dust or other materials which would be deleterious to human health or hazardous to the operation or use of the pool or spa.

(2) Swimming pools and spas shall be constructed of concrete, steel or other approved materials with an impervious finish. No wooden spa units are permitted.

(a) The inside surface of the swimming pool or spa shall be constructed of an impervious material which will retain a smooth finish with no cracks or open joints.

(b) Where the water depth is less than 5 feet, the floor surface shall be smooth to facilitate cleaning and the movement of bottom deposits to a main drain.

(c) Where the water depth is greater than 5 feet, the floor surface shall be as smooth as practical while having a non-slip finish.

(d) The walls and floor shall be light-colored.

(e) Sand or earth floors shall not be allowed for public swimming pools or spas.

(3) The swimming pool shall be designed and constructed in such shape or contour that efficient and safe control of the swimming pool and bathers can be accomplished and so that the recirculation of water in the swimming pool is not impeded.

(a) The slope of the floor of all pools shall not exceed 1 foot vertical drop for every 12 feet, as measured horizontally in the shallow areas, and 1 foot vertical to 3 feet horizontal, as measured in the deep area. These slopes shall be uniform except at the transition point from shallow to deep areas (5 foot depth) .

(b) Walls of a swimming pool shall be vertical for a water depth of 6 feet, and shall not have a slope greater than 45 E .

(c) Safety ledges or offset ledges when provided on vertical walls in the deep areas of the swimming pool shall be

at least 30 inches below the water surface and have a slip-resistant surface. The ledge shall slope 1/2 inch in 4 inches toward the pool. Ledges shall have a maximum width of 8 inches.

(d) Underwater seat benches when provided shall not be over 20 inches below the waterline and shall be:

(i) visually set apart from the surrounding pool surfaces by either a contrasting color or visual image; and

(ii) completely recessed in either a separate alcove or walls indentation especially designed to accept the same when located in the deep areas of the pool; and

(iii) provided with slip-resistant surfaces.

(e) The main drain outlet or outlets of the swimming pool shall be plainly visible and located at the deepest portion of the pool.

(f) The depth of the water shall be plainly marked at or above the water surface on the vertical pool wall and on the edge of the deck or walk next to the pool, at maximum and minimum points and at the points of break between the deep and the shallow areas and at intermediate one foot increments of depth, spaced at not more than 25 feet intervals measured peripherally. The depth in the diving areas will be appropriately marked. Lap pools must have depth markers at 25 foot intervals and at the ends. Depth markers shall be in numerals of 4 inch minimum height and a color contrasting with the background. Where depth markers cannot be placed on the vertical walls above the water level, other means shall be used, said markings to be plainly visible to persons in the pool.

(g) Swimming pools having diving equipment shall be designed and provide for a minimum water depth as called for in Table I and Diagram 1, copies of which follow this rule and by this reference are made a part hereof.

(h) There shall be an unobstructed clear vertical distance of 13 feet above any diving board measured from the center of the front end of the board. This area shall extend horizontally at least 8 feet behind, 8 feet to each side, and 16 feet forward from the horizontal location of the tip of the diving equipment.

(i) A horizontal separation of 10 feet shall be provided between diving boards except this may be reduced to 8 feet for surface boards of less than 1/2 meter in height.

(j) The minimum depth of water in the swimming pool shall be 3 feet except for special-purpose swimming pools, special instructional pools, or restricted or recessed areas, which shall be separated from the shallow portion of the pool by safety lines supported by buoys attached to the side walls.

(k) The maximum depth of the water at the shallow end of the swimming pool shall not exceed 3 feet 6 inches, except in lap pools where a maximum of 4 feet is allowed.

(4) When a water slide is provided in conjunction with a pool, the slide must be installed according to manufacturer's instructions, be approved by the manufacturer for use with public and privately owned public swimming pools, and meet all applicable building codes.