Reviewed 2026-10-08
A leak is not always directly above the damaged pipe. Water can travel through soil, so patterns and timing are clues rather than proof of the exact break location.
Compare when the ground is wet
A wet area that appears only while one zone runs may point to a head, fitting, or lateral line in that zone. A spot that remains wet when all zones are off can indicate a pressurized supply-side issue or a valve that is not closing fully.
Look for a change across the zone
Reduced pressure, a bubbling head, a sudden change in coverage, or water flowing after the scheduled cycle ends can help narrow down what to inspect.
Limit water loss safely
If water is escaping or pooling, turn off the affected zone or irrigation supply if you can do so safely. Do not dig until underground utilities and the likely pipe path are understood.
Avoid assuming a high bill proves an irrigation leak
Unusual use can have several causes. Compare the water meter when indoor and irrigation use are off, and contact the utility or a qualified professional if the source is unclear.