SoCal Rooter & HydroJet

Why an Outdoor Hose Bib Leaks Only When It Is Open

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Where an outdoor faucet leaks matters. Water near the handle while the valve is open can point to the stem seal. Water at the hose connection can come from a worn washer or damaged threads. Moisture inside the wall needs prompt attention because the leak may be behind the siding.

Record where the water starts

With the faucet off, look for a loose hose coupling or visible damage. If you already saw water emerge behind the fixture or inside the house, leave it off and report that observation. Take a photo of the faucet and nearby wall so the plumber can plan access.

Ask whether the faucet or the supply connection needs work

Tell the plumber whether the leak stops when the handle closes and whether the faucet was recently exposed to freezing conditions or physical damage. Those details help distinguish an accessible fixture repair from work on a concealed supply connection.

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