New Mexico Administrative Code
Title 17 - PUBLIC UTILITIES AND UTILITY SERVICES
Chapter 12 - WATER SERVICES
Part 750 - MINIMUM STANDARDS FOR DESIGN, CONSTRUCTION, AND OPERATION OF WATER UTILITIES
Section 17.12.750.12 - PRESSURES
Current through Register Vol. 35, No. 18, September 24, 2024
A. Pressure Required: Under normal conditions of use including the expected peak demands, water pressure at the customer's meter shall be not less than 30 p.s.i.g. nor more than 125 p.s.i.g.
B. Main Sizing: As new mains are installed or as mains which have reached the end of their useful lives are replaced, the new or replacement main shall be sized and designed to accommodate the standards contained herein.
C. Delineation of Minimum Normal Operating Pressures: Other minimum normal operating pressures are applicable within delineated areas as set forth on the utility's Commission- approved tariff sheets or as provided for in special agreements.
D. Pressure Gauges: Each utility shall provide itself with one or more pressure gauges for each separate water system.
E. Pressure Surveys: It is suggested that at regular intervals each utility make a survey of pressures in its distribution system at or near the time of maximum usage. The records of these surveys should show the date, time, and location of the test.
F. Customer Transfer Pumps: No utility shall furnish water service to any customer who utilizes a transfer pump to pump water from the utility's water main into the customer's plumbing facilities unless backflow prevention is provided. Consideration shall be given both to deteriorating pressure in the mains and also to any potential hazard which might be created if contamination should be introduced into the system through a cross-connection when a negative pressure is induced in the water main by a customer's transfer pump.
