At what pressure must a distribution system be designed to comply with regulations?

A distribution system must be designed to comply with regulations at a pressure of 30 psi. This standard ensures that the system is capable of maintaining adequate water supply under various operational conditions, including peak demand scenarios and potential pressure losses due to friction or elevation changes in the distribution network.

Maintaining a minimum pressure of 30 psi is crucial for effective water service delivery and helps prevent issues such as inefficient system performance, reduced water quality, and the potential for backflow contamination. Ultimately, adhering to this regulation supports the overall functionality and safety of a water distribution system, making it necessary for compliance in infrastructure design and maintenance.