An automatic sprinkler system will only be effective if it works properly. Consistently soggy spots on the lawn or reduced pressure in a sprinkler head usually indicate a leak in the sprinkler system. To fix it, you must identify and repair the sprinkler head or pipe that is leaking. This is easy to do if you follow the steps below.
You will need:
Step 1: A small leak is usually only indicated by reduced pressure in the sprinkler heads when the system is on or excess water in the lawn or near the foundation of the home. Look for soggy patches in the lawn, pooled water, and water leaking through the home foundation.
Step 2: After determining that a leak exists, you must locate it. If the leak is underground, you will probably not see it. Turn on the sprinkler system and go to the first sprinkler head. Check it to determine whether the water is flowing through it at the regular rate. Keep going until you find a sprinkler head that has reduced pressure. The leak should be between this sprinkler head and the one you checked before it. Inspect the lawn to identify where water is pooling, the lawn is soggy, or water is bubbling up through the soil.
Step 3: If all sprinkler system heads have an equal amount of water pressure, the leak is probably very small. Turn off the system and replace each sprinkler with a head featuring a cap that screws onto a riser. Turn on the water and look to see if any sprinkler head has reduced water pressure.
Step 4: Once you have identified the location of the leak, turn off the sprinkler system and dig carefully into the ground covering it, uncovering the fitting or pipe that contains the leak. If the seal on the pipe joint is bad, tighten the clamps or replace this seal. If the riser or pipe is broken, replace the pipe at the location of the break.
Step 5: Turn on the sprinkler system and verify that the leak has been repaired. Turn the system off and replace the soil and the lawn.