Final answer:
Plumbing in Texas is regulated by the Texas State Board of Plumbing Examiners, not by other elected state officials like the Railroad Commission, which oversees other public utilities and industries.
Step-by-step explanation:
In Texas, the regulation of plumbing is overseen by the Texas State Board of Plumbing Examiners (TSBPE), which operates independently of the elected state officials such as the commissioner of the Department of Agriculture and the three commissioners of the Railroad Commission. While the Railroad Commission has regulatory jurisdiction over public utilities, transportation, and the oil and gas industry, it does not have authority over plumbing. The TSBPE is responsible for licensing plumbers, enforcing plumbing regulations and standards, and ensuring the safety and welfare of the public by maintaining the integrity of the plumbing infrastructure.