A Fire Hydrant Wearing A Black Hat And Matching Black Gloves. Stock Photo

To most people, a fire hydrant is a fire hydrant, and not much else. Just a supply of water for the responding fire departments. For the fire department, they need to know the amount of pressure and source of water, the different hydrants need simple color coding to quickly and accurately answer this for them. The black top and sides indicate to the San Francisco Fire Department this is the Twin Peaks neighborhood.