Sprinklers should only release water from their heads, and only when the system is turned on. Unfortunately, some damaged sprinklers can leak water from their heads even when they are turned off, or even from other places other than the heads. Here are two common causes of this problem, and how you can troubleshoot which problem you are facing:
Low-Head Drainage
In low-head drainage, water continues to flow from some your sprinklers (or one of them) even after turning them off.
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