North Carolina Administrative Code (Last Updated: November 13, 2014) |
TITLE 15A. ENVIRONMENT AND NATURAL RESOURCES |
CHAPTER 18. ENVIRONMENTAL HEALTH |
SUBCHAPTER C. WATER SUPPLIES |
15A NCAC 18C .0901. SIZE OF THE WATER MAINS
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Water distribution mains shall be sized to provide a minimum pressure at all points within the distribution system of not less than 20 pounds per square inch (gauge) during periods of peak demand (fire flow), but in any case water mains shall not be less than two‑inch standard nominal diameter. Fire hydrants shall not be installed on water mains of less than six inches diameter or on water mains or water systems not designed to carry fire protection flows. Systems not designed for fire flows shall have the capacity to maintain a pressure of at least 30 pounds per square inch (gauge) throughout the system during periods of peak flow.
History Note: Authority G.S. 130A‑315; 130A‑317; P.L. 93‑523;
Eff. January 1, 1977;
Readopted Eff. December 5, 1977;
Amended Eff. March 31, 1980.