How can I tell if my backflow preventer is leaking from the weep hole?

It’s leaking from the weep hole if water drips or sprays from the relief/vent port when no fixtures are running. A steady drip often means debris or a worn internal check. A stream can indicate freeze or body damage. In Noblesville and nearby Carmel, we service irrigation and domestic backflow preventers.

• Dry the body and place a paper towel under the vent; watch for wet spots.
• Close the downstream shutoff; if it still leaks, the fault is inside the device.
• Cycle the supply valve; note if flow changes.
• Never plug the vent; shut water and call a pro.

Updated: 2025-12-30 00:00:00

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