The most common reason is called “low head drainage”.

Sprinkler system leaking underground. However, above ground there will be obvious signs that something below ground is leaking or. Most of the time it’s something very simple like the irrigation controller is turned off or has lost its programming. Trace the path of the irrigation sprinkler lines.

The first step to locate a leak is to understand how the underground irrigation lines in your sprinkler system are laid out. There are two reasons why a sprinkler will leak water when the system is supposed to be off. In this sprinkler pipe repair video we show you how to fix a cracked sprinkler pipe gushing water undergro.

Underground leaks within your irrigation system cannot be seen, so they can be difficult to find. Find your water meter and close the main valve. Most domestic water meters are situated near the road.

If the leak around a sprinkler head appears to start. When water continues to flow from one or more sprinkler heads for a few minutes after you turn your irrigation system off, it’s low head drainage. Each valve in your sprinkler is like a faucet, which shuts off and turns on water flow.

A sprinkler system can stop working for many reasons. Clean the spout where the riser is attached with a toothbrush. In the typical system, a water supply pipe from the main water source first.

Welcome to your nightmare pvc pipe sprinkler fail. The second reason that a sprinkler system could leak when off is that the valve for the whole zone is leaking and allowing new water into the system. A leaky valve typically arises.