Why You Are Responsible for the PRV

• Property Line: In Texas, the water utility is responsible for the water lines and equipment (including the meter) up to the point of connection at your property line (the meter). Everything on the house side of the meter is part of the private plumbing system and is the homeowner’s responsibility to install and maintain.
• Plumbing Codes: Plumbing codes, including those adopted in Texas, generally require a PRV if the incoming static water pressure from the main line exceeds 80 pounds per square inch (psi) to prevent damage to internal plumbing and appliances.
• Service Agreements: Most water supply service agreements explicitly state in their terms and conditions that the customer is responsible for installing and maintaining a PRV, especially if system pressure can be highly variable due to local topography. 

Actionable Advice: Maintaining Your PRV

• Monitor Your Pressure: It is a good idea to periodically check your household water pressure to ensure your PRV is working correctly. You can purchase a simple pressure gauge at a local hardware store and attach it to an outside spigot.
• Typical Pressure Range: Most PRVs are factory set to around 50-55 psi, but can be adjusted, usually between 25-75 psi. The U.S. Environmental Protection Agency (EPA) recommends setting it to limit pressure to between 45 and 60 psi to conserve water and extend the life of plumbing fixtures.
• Professional Help: While a homeowner can perform maintenance or replacement, it is often recommended to use a licensed plumber to ensure proper installation and compliance with local codes. 

Your water supply company is not liable for any damage to your property caused by high water pressure, emphasizing the importance of maintaining your own PRV.