105 CMR, § 140.204
Each clinic, except clinics providing only mental health services or small clinics that do not have more than two examination rooms, shall provide a clean supply storage room and a soiled workroom or soiled holding room, that are apart from any examination, treatment or dressing area as necessary for the services provided by the clinic to meet accepted standards of practice. The clean storage room shall accommodate storage for clean supplies. The soiled workroom area shall contain a work counter, a clinical service sink, and if physically separate from the clean work area, a handwashing sink with hot and cold water. If patient care does not involve disposal of fluid waste, a soiled holding room equipped with a handwashing sink with hot and cold water may be provided in lieu of a soiled workroom.
105 CMR, § 140.204