5 Colo. Code Regs. § 1003-5-3.20
The dressing rooms shall be located adjacent to the locker or checkroom and showers. The layout of the dressing rooms for the exclusive use of swimmers shall be such that the bathers, on leaving the dressing room, shall pass the toilets and showers enroute to the swimming pool.
Dressing rooms, toilet facilities and shower rooms are required for all pools except those provided in connection with lodging facilities where the pool is not available to the public not occupying such facilities (hotels, motels, mobile home parks, campgrounds) and shall be handicapped accessible.
Floors of toilet and shower rooms shall have a minimum slope of one-fourth (1/4) inch per foot to the drains.
Floors of toilet, shower rooms and dressing rooms shall be of smooth non-slip finish and shall be impervious to moisture. No carpeting is permitted.
Hose bibbs of three-fourths (3/4) inch minimum size and served by not less than three-fourths (3/4) inch pipe shall be provided to enable the entire toilet and shower room to be conveniently flushed by hose.
The material used for walls, partitions, and furniture shall be such that it can be easily cleaned and will not be damaged by frequent hosing, wetting,or disinfection.
Dressing rooms to be used simultaneously by both males and females shall be divided into two parts separated by a tight solid partition, with no openings; each part shall be designed for males or females. The entrances and exits shall be screened to break line of sight.
5 CCR 1003-5-3.20