Oregon Administrative Rules
Chapter 860 - PUBLIC UTILITY COMMISSION
Division 36 - WATER UTILITIES
Section 860-036-1650 - Adequate Water Pressure Required

(1) A water utility must maintain adequate water pressure. In general, water pressure measuring between 45 and 80 pounds per square inch in the water mains is adequate for the purpose of this rule. However, adequate pressure may vary depending on each individual water system.

(2) A water utility may temporarily reduce or increase water pressure for fire flows, noticed repairs and maintenance, scheduled or emergency flushings, and unscheduled or emergency repairs and outages.

(3) Each water utility must maintain permanent pressure recording gauges at various locations to measure the system's water pressure. A water utility must have a portable gauge to measure water pressure in any part of the system. The water utility must maintain all pressure gauges in good operating condition, test periodically for accuracy, and recalibrate or replace when necessary.