37 Tex. Admin. Code § 343.458
Each SOHU constructed and in operation on or after September 1, 2003, shall:
(1) contain an operable washbasin with:
Source Note:The provisions of this §343.458 adopted to be effective January 1, 2010, 34 TexReg 7095; amended to be effective January 1, 2015, 39 TexReg 9243.