Fire hydrants are required to keep your municipality running smoothly. Fire hydrants are used by firemen to put out fires by allowing them to swiftly tap into your water utility's pressurized water system. To get the water flowing, the firefighters remove a nozzle or two, attach hoses to the nozzles, and turn the valve. They can immediately determine how much pressure they have available depending on the hydrant's body color and nozzle type, allowing them to prevent disaster and property damage.