An owner shall ensure that a public therapy pool: Is in compliance with: This chapter; Applicable State and local codes; and The American National Standard for Public Swimming Pools; Has: A deck with a minimum width of 4 feet around at least 50 percent of the therapy pool that provides access to individuals using the therapy pool, not including any ramp, entrance area, or exercise area; and A transition area between a shallow and a deep area that has: A floor slope that does not exceed 1 foot of drop to 3 feet of run; or Steps or ramps with handrails or a swing lift to transfer bathers from a shallow area to a deep area; and Is used only for the purpose of supervised therapy.