Table 7.11 – Shower Spray Controls
Current Guidelines:  
4.21.6  Shower Unit.  A shower spray unit with a hose at least 60 in (1525 mm) long that can be used both as a fixed shower head and as a hand-held shower shall be provided.

Final Revised Guidelines:  
607.1  General.  Bathtubs shall comply with 607. 

607.6  Shower Spray Unit and Water.  A shower spray unit with a hose 59 inches (1500 mm) long minimum that can be used both as a fixed-position shower head and as a hand-held shower shall be provided.  The shower spray unit shall have an on/off control with a non-positive shut-off.  If an adjustable-height shower head on a vertical bar is used, the bar shall be installed so as not to obstruct the use of grab bars.  Bathtub shower spray units shall deliver water that is 120°F (49°C) maximum. 

608.1  General.   Shower compartments shall comply with 608.

608.6  Shower Spray Unit and Water.  A shower spray unit with a hose 59 inches (1500 mm) long minimum that can be used both as a fixed-position shower head and as a hand-held shower shall be provided.  The shower spray unit shall have an on/off control with a non-positive shut-off.  If an adjustable-height shower head on a vertical bar is used, the bar shall be installed so as not to obstruct the use of grab bars.  Shower spray units shall deliver water that is 120°F (49°C) maximum.
Exception:  A fixed shower head located at 48 inches (1220 mm) above the shower finish floor shall be permitted instead of a hand-held spray unit in facilities that are not medical care facilities, long term care facilities, transient lodging, or residential dwelling units.

Model Codes & Standards
No requirement for an on/off control on shower spray units.