In NSW Hydrants are located just a couple of feet underground on either a road or pathway and have a cover known as a surface fitting.

In residential areas, hydrants are positioned approximately 50 – 100 metres apart depending on the lay of the land and provision of other services such as phone lines, power and gas.

Firefighters use hydrant markers to identify the location of a hydrant. These markers are critical in locating a hydrant in a quick and timely manner during firefighting operations.

Without these markers firefighters would not know where a hydrant is unless they have prior knowledge of the area.

These markers not only assist firefighters in locating a hydrant, but assist Sydney Water also.

The markers are divided into two groups. Primary and Secondary Markers.