For most intents and purposes, there are two types, wet and dry barrel hydrants, in addition to standpipes. These have a different structure and mechanism depending on the surrounding conditions.
How many hydrants are there in the US?
Verisk records 8.9 million fire hydrants in the United States.
Who owns fire hydrants?
Although water utilities are often responsible for the condition of fire hydrants in a distribution system, water utilities and fire departments share the responsibility of ensuring hydrants operate properly during emergencies.
What color should fire hydrants be?
Most fire hydrants are universally red; however, even this ubiquitous coating communicates valuable information to firefighters and water distribution personnel. Color coding depends on where each color is located on the hydrant, as the hydrant bodies and bonnets and caps each relay a separate set of information.