22 Tex. Admin. Code § 363.4
To be eligible for a Master Plumber License an applicant must have held a Journeyman Plumber License issued in Texas or another state:
Source Note:The provisions of this §363.4 adopted to be effective September 1, 2017, 42 TexReg 3771; amended to be effective July 1, 2021, 46 TexReg 3608; amended to be effective February 16, 2023, 48 TexReg 682.