Skip to main content

Yes, the color of your nearby fire hydrant matters...

...and here's why.

You will find White, Red, Yellow and Violet colored fire hydrants pretty much everywhere.  But there's a reason for this - and it's because of the National Fire Protection Association (NFPA).  This association has issued guidelines for color coding standards for fire hydrants.  These color codes from the body of the hydrant, top of the hydrant, and in some municipalities the outlet caps are designed to allow fire fighters to know what type of system, water flow rate (Gallons Per Minute or GPM), and level of water pressure.  This guideline is known as NFPA 291 and is intended to be used universally throughout the United States.

The NFPA guidelines are specific to the body and the top cap of the hydrant.  If a hydrant is WHITE or YELLOW - it means that it is connected to a public/municipal water system.  If a hydrant is RED - the hydrant is connected to a private system, typically a well.  These are most common in rural or unincorporated areas. Red is a recommendation by the NFPA - the guideline is that it should be a color that distinguishes itself from the public system.  Finally, PURPLE hydrants means that the hydrant is connected to a non-potable water supply.

Our fire hydrant conversion in progress
The top cap color is meant to signify the water flow rate or GPM of the hydrant.  A BLUE top means that the water flow rate is over 1500 GPM.  GREEN is for a flow rate of 1,000 - 1,499 GPM and is acceptable for most residential areas.  ORANGE is a rate of 500 - 999 GPM and is considered marginally adequate.  Finally, RED is a flow rate of below 500 GPM and is considered inadequate to fight fires. 

Again, these are only guidelines as many municipalities have added colors for water pressure levels or use a different color for hydrants connected to a public system.

Earlier this year, the fire hydrant in front of our home changed from red to yellow.  The photos in the entry chronicle the transformation from red to yellow and silver.  You'd think that it wouldn't be noticed, but our neighborhood message board were filled with questions asking why their fire hydrant was being repainted and why does it have to be yellow.   Even a year later, the repainting of the hydrants were still being talked about.




https://twitter.com/WNFIV/status/938093442512637955The reason is that all hydrants connected to the City of Raleigh water system were being painted yellow to meet the NFPA 291 guidelines.  This included municipalities throughout Wake County - such as Wake Forest, Knightdale, Garner - that receive water from the Raleigh system.  It was also noted that municipalities could qualify for lower insurance rates if they follow the NFPA guidelines.

The finished product.
So the next time you see a fire hydrant.  Check the colors of it - it may be telling you something.  Especially if it is purple!

Comments

Unknown said…
Hi Tom F.

Hah, back in 1976, 1 year out of the Navy I moved to Manhattan Beach. My new neighbors joined me for a summer drinking fest. We lived about 5 blocks up and got soooo drunk, we started opening our common area hydrant to cars passing by. Our mission? Cool off the people, it was very hot out.

Needless to say, a few got busted, tossed into the drunk tank, me among them. My fine was no jail and 10 days community service and given three buckets of paint. Guess what my fine was? I learned a lot about the color codes...up close and personal.

Popular posts from this blog

Bleriot Ferry - Alberta

  Alberta operates six ferries scattered throughout the province. Roughly twenty to twenty-five kilometers up the Red Deer River from the town of Drumheller is one of the most scenic ferry crossings in all of Wild Rose Country, the Bleriot Ferry. Using the North Dinosaur Trail (Alberta Highway 838, or AB 838), the Bleriot Ferry provides a scenic river cruise of sorts in the Canadian Badlands. The Bleriot Ferry started operating in 1913 as the Munson Ferry when a few bridges crossed the Red Deer River. The ferry was started by Andre Bleriot, the brother of famed early aviator Louis Bleriot, who became famous for being the first person to fly over the English Channel. At the time, the Alberta provincial government commissioned local residents to run the ferries. There were several ferries along the Red Deer River, and not only did they serve as vital transportation links, but they also served as local social hubs, since everyone had to take the ferries to go places. Over time, as the...

Interstate 40's Tumultuous Ride Through the Pigeon River Gorge

In the nearly 60 years Interstate 40 has been open to traffic through the Pigeon River Gorge in the mountains of Western North Carolina, it has been troubled by frequent rockslides and damaging flooding, which has seen the over 30-mile stretch through North Carolina and Tennessee closed for months at a time. Most recently, excessive rainfall from Hurricane Helene in September 2024 saw sections of Interstate 40 wash away into a raging Pigeon River. While the physical troubles of Interstate 40 are well known, how I-40 came to be through the area is a tale of its own. Interstate 40 West through Haywood County near mile marker 10. I-40's route through the Pigeon River Gorge dates to local political squabbles in the 1940s and a state highway law written in 1921. A small note appeared in the July 28, 1945, Asheville Times. It read that the North Carolina State Highway Commission had authorized a feasibility study of a "...water-level road down [the] Pigeon River to the Tennessee l...

I-73/I-74 and NC Future Interstates Year in Review 2024

Welcome to another annual review of progress in constructing North Carolina's New and Future Interstate routes. While 2024 was not too exciting, with no new segments of major routes opening, there was 1 new interstate signing, another proposed new interstate route, and the near opening of a new segment for 2 routes. As tradition, I will start off with a review of what happened with I-73 and I-74 and then move on to the major news of the year about the other new and future routes. Work continued on the I-73/I-74 Rockingham Bypass through the year. The last few months have been hoping for news of its opening before 2025, without luck. Signs of its near completion included the placement of new signs, many with interstate shields uncovered, along the Bypass and intersecting roadways. For example, these went up along US 74 East: Overhead signage at Business 74 exit which contains the future ramp to I-73 North/I-74 West. Signage was also updated heading west on US 74 approaching the unop...