Water.. you can short-cut the plumbing code, but would a professional do it?
D003748:Dental Equipment / Q000592:standards*; D003770:Dental Offices / Q000592:standards; D005160:Facility Design and Construction / Q000592:standards; D012722:Sewage; D014865:Waste Disposal, Fluid; D014867:Water
D012722:Sewage; D014867:Water