5 Colo. Code Regs. § 1003-5-3.7
Steps or ladders shall be provided at the shallow end of the pool if the vertical distance from the bottom of the pool to the deck or walk is over two (2) feet. Recessed steps or ladders shall be provided at the deep portion of the pool and if the pool is over thirty (30) feet wide, such steps or ladders shall be installed on each side. Ladders shall be located so that divers need not turn back to reach them. Stairs leading into the pool shall be of non-slip design, have a minimum tread width of twelve (12) inches and a maximum height of ten (10) inches. A minimum of one handrail shall be required at the stairs leading into the shallow end. The stairs shall have a two (2) inch wide contrasting color tread edge, and shall be clearly visible to the user. There shall be a clearance of not more than five (5) inches nor less than three (3) inches between any ladder and the pool wall. Ladders shall have non slip treads. If steps are inserted in the wall or if stepholes are provided, they shall be of such design that they may be cleaned readily and shall be arranged to drain into the pool to prevent the accumulation of dirt therein. Stepholes shall have a minimum tread depth of five (5) inches. Where stepholes and ladders are provided within the pool, there shall be a handrail at the top of both sides thereof, extending over for the edge of the coping or the edge of the deck. Stepholes shall have a contrasting color to the wall in which they are placed. Supports, platforms and steps for diving boards/towers shall be of substantial construction and of sufficient structural strength to safely carry the maximum anticipated loads. Steps shall be of corrosion-resistant material and of non-slip design. Handrails shall be provided at all steps and ladders leading to diving boards more than 1/2 meter above the water. Platforms and diving boards more than 1/2 meter high shall be protected with guard railings.
Starting blocks must be structurally sound and secured in place. Starting blocks must be removable. Maximum height of starting blocks over water less than to four (4) feet deep is eighteen (18) inches above the water surface. Starting blocks shall be clearly labeled, "NO DIVING."
5 CCR 1003-5-3.7