Years ago I remember seeing three colors for hydrants in Chicago. Red-OK thats pretty simple; on the north side of 51st street with Forest View just beyond they were silver. Did silver denote "on the end of the line"? And there were also yellow ones, anybody know why?
Yes Paul, I had already visited "firehydrant.org." but their info does not coincide with what Chicago used BITD. I wonder if the colors and info listed are a new standard that has been adopted; like everything else these days there may be a group that is looking out for our best interests.
I do not know if they still paint them like they used to in the city, haven't thought to look. Hopefully a fire-buff will see this and we'll get an answer for the different colors.