Caleb MorganBy Caleb Morgan

Updated November 2026

To repair an outdoor water faucet, you shut off its supply, identify whether the leak comes from the handle, the spout or the base, and then replace the worn washer, packing or valve stem that is causing the problem. Most fixes take under an hour with basic hand tools. This guide walks through the process so you can stop the drip and get the faucet sealing properly again.

Shut Off the Water and Diagnose the Leak

Before touching anything, find the shutoff valve that controls the outdoor line. It is often in a basement, crawl space or inside a utility closet near where the pipe enters the house. Close it fully, then open the outdoor faucet to drain any trapped water. If water keeps running after the valve is closed, the shutoff itself may be faulty, and a plumber should look at it.

Shopping for one? See our guide: 7 Best Water Faucet Outdoor Repair Kits and Parts Compared (2026).

Next, figure out where the water is escaping. A drip from the spout when the faucet is off usually points to a worn washer or seat. Water weeping around the handle or stem points to failed packing or an O-ring. A leak at the base or where the hose connects often means a cracked hose bib or a bad gasket.

Replace the Stem Washer and Packing

Once you know the source, remove the handle. Most outdoor faucets hold the handle with a single screw under a decorative cap. Unscrew the packing nut with an adjustable wrench, then pull out the stem assembly. At the bottom of the stem you will find a rubber washer held by a brass screw. Remove the screw and swap in a new washer of the same size.

If the leak is around the handle, replace the packing washer or O-ring on the stem shaft instead. Wrap new plumber’s tape or apply a thin coat of silicone-based grease to the new seal, then reinstall the stem and snug the packing nut. Tighten only until the leak stops. Overtightening can crack the seat or damage the threads.

Reassemble and Test the Faucet

  1. Reinstall the stem assembly and hand-tighten the packing nut.
  2. Snug the nut another quarter turn with a wrench, no more.
  3. Replace the handle, screw and cap.
  4. Slowly open the shutoff valve and let the line refill.
  5. Open the outdoor faucet halfway and check for drips at the spout and handle.

Run the faucet for about 30 seconds to clear any debris stuck in the line. Sediment from old pipes often lodges in the new washer seat and causes a fresh drip. If the faucet still leaks after reassembly, the seat itself may be pitted and need resurfacing or replacement.

  • Replacement washer assortment: Having several sizes on hand means you can match the old washer without a second trip to the store. View on Amazon
  • Silicone plumber’s grease: A light coat on O-rings and packing reduces friction and helps the seal last. View on Amazon
  • Adjustable wrench: A wrench that opens wide enough for packing nuts prevents rounding the fittings. View on Amazon

Common Mistakes

  • Skipping the shutoff step and getting soaked when the handle comes off.
  • Using the wrong washer size, which will never seal fully.
  • Overtightening the packing nut, which can split the body or crush the seal.
  • Forgetting to drain the line, leaving pressure behind the valve.
  • Ignoring a cracked hose bib, which a new washer cannot fix.

FAQ

Why does my outdoor faucet keep dripping after I replace the washer?

The valve seat may be worn, pitted or clogged with sediment. Clean it or resurface it, and confirm the new washer is the correct size and seated flat.

Do I need to shut off the whole house water supply?

Usually no. Closing the dedicated shutoff for the outdoor line is enough. If you cannot find that valve, the main shutoff will work.

When should I call a professional?

Call a plumber if the shutoff valve leaks, the pipe inside the wall is damaged, or the faucet body is cracked. These problems can cause water damage and are not safe to attempt without experience.

Conclusion

Repairing an outdoor water faucet comes down to shutting off the supply, finding the leak source and replacing the worn washer or packing. Take your time with the packing nut and test the faucet before calling the job finished. With the right parts, most leaks can be stopped in a single afternoon.

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Caleb Morgan

About Caleb Morgan

Caleb Morgan is part of our editorial team and reviews and edits our kitchen faucets & sinks guides, checking product details against manufacturer specifications and owner feedback.