FIRE HYDRANT COLOR CODE TABLE

FIRE HYDRANT

FIRE HYDRANT COLOR CODE TABLE

FIRE HYDRANT COLOR CODE TABLE

You may have noticed that fire hydrants are not all the same color. What you are seeing is the color assigned to each hydrant to convey how well it performs as a source of water for firefighting and other uses. The color denotes how much water is available from the hydrant in GPM Gallons Per Minute and other information needed by the fire crews to set up the hoses to put out fires. Some hydrants are all one color and others have caps colored differently from the body and some will have symbols painted on them to identify Regulated Zones. Some water supplies are in Regulated Pressure Zones, that means that the supply of water pressure is regulated and firefighters must shut the water down slowly to prevent damage to water mains and regulator devices in the area. The table below shows some of the most commonly used hydrant color code markings.

BODY COLORS
WHITE HYDRANT PUBLIC SYSTEM EBMUD
YELLOW HYDRANT PRIVATE SYSTEM CONNECTED TO PUBLIC WATER MAIN
RED HYDRANT SPECIAL OPERATION NOT USED EXCEPT FOR SPECIAL PROCEDURES
VIOLET HYDRANT NON POTABLE SUPPLY POND OR LAKE SUPPLY, EFFUENT
TOP COLORS (NFPA)
BLUE 1500 GPM or MORE VERY GOOD FLOW
GREEN 1000-1499 GPM GOOD FOR RESIDENTIAL AREAS
ORANGE 500-999 GPM ADEQUATE MARGINALLY
RED BELOW 500 GPM INADEQUATE
ALTERNATE OUTLET CAP COLORS (NOT NFPA)
GREEN OVER 120 PSI (Pound Per Square Inch) EXTREMELY HIGH PRESSURE (CAUTION)
ORANGE 50-120 PSI NORMAL PRESSURE RANGE
RED BELOW 50 PSI REQUIRES A PUMP
REGULATED MAINS MARKING
ORANGE ARROW (->) INDICATES DIRECTION OF WATER FLOW ON A DEAD END MAIN
ORANGE ARROW AND VERTICAL BAR (->I) INDICATES LAST HYDRABT AND DIRECTION OF WATER FLOW ON DEAD END MAIN
ORANGE “R” IN CIRCLE ® INDICATES HYDRANT IS ON A REGULATED PRESSURE ZONE

Click here to see more articles. 

Click here to receive these articles monthly.