Why Is My Outdoor Faucet Turned Off But Water Still Running — And How Do I Stop It?

An outdoor faucet turned off but water still running is one of the most common — and most misdiagnosed — plumbing headaches homeowners hit in spring and fall. The good news: the cause is mechanical and specific, not mysterious. Water only escapes a closed faucet if something inside has stopped sealing. Below, we’ll walk through exactly why it happens, how to tell which part failed, what it costs to fix, and when it’s smarter to replace the spigot outright. This is written for real people standing in the yard with a wet foundation, not for a keyword robot.

Why is water still running when my outdoor faucet is turned off?

Water still runs from a closed outdoor faucet because the internal seal — the rubber washer pressing against a metal seat — is worn, cracked, or blocked by grit, so it can’t fully stop the flow. Turning the handle moves the stem, but if the washer is gone, there’s nothing to plug the water path.

Think of a standard outdoor spigot (also called a hose bib or sillcock) like a screw press. When you turn the handle clockwise, a threaded stem drives a small rubber washer down onto a brass seat inside the valve body. That washer-to-seat contact is the ONLY thing stopping the water. When any of these fails, water leaks past even though the handle feels fully closed:

• Worn or hardened washer — the #1 cause. Rubber flattens, cracks, or dries out over years of sun and freeze cycles.
• Damaged or pitted valve seat — the brass surface the washer presses into gets scored, so it can’t seal even with a fresh washer.
• Loose or broken retaining screw — the tiny brass screw holding the washer backs out and the washer falls off.
• Failed cartridge in a frost-free sillcock — newer frost-free faucets use a long stem with a cartridge or a washer at the far end; when it fails, water dribbles out slowly.
• A cracked pipe or split valve body — from a hard freeze — which can leak whether the handle is open or closed.

One more thing people confuse: after you shut off a hose, water trapped in the hose itself drains out for a few seconds. That’s normal. If water keeps coming a minute later — or if it runs with no hose attached — the valve is the problem, not the hose.

How do I tell the difference between a bad washer, a bad seat, and a cracked pipe?

You diagnose it by watching where and how fast the water comes out. A slow drip from the spout with the handle closed points to a washer or cartridge; a leak from around the handle points to packing; water appearing on the wall or inside the house points to a cracked pipe. Each has a distinct signature.

Here’s how to read the symptoms before you buy a single part:

Two quick field tests. First, remove the hose entirely and watch the spout — if it still drips, the valve is bad. Second, run your hand up the wall behind and above the faucet; if it’s wet up there but dry at the spout, you likely have a split pipe inside the wall, which is common after a hard winter. If you suspect freeze damage specifically, read our guide on what to do about a frozen outdoor water faucet before you touch anything — thawing it wrong can turn a hairline crack into a burst.

Can I fix an outdoor faucet that won’t shut off myself, or do I need a plumber?

Most cases — a worn washer, loose packing, or a bad cartridge — are a genuine 20-minute DIY fix with basic tools and a few-dollar part. You only need a plumber when there’s a cracked pipe inside the wall, a soldered connection to redo, or the valve body itself is corroded through.

If you’re comfortable turning a wrench, here’s the honest split: roughly 80% of “won’t shut off” outdoor faucets are washer or packing issues you can fix yourself. The remaining 20% involve freeze-split pipes or sweated copper joints where a torch and pipe-cutting come into play — that’s plumber territory unless you already do your own copper work.

What tools and parts do I need for the DIY repair?

You need very little. For a standard washer replacement, gather:

1. An adjustable wrench or a pair of channel-lock pliers
2. A flat-head and a Phillips screwdriver
3. A small assortment pack of faucet washers and brass retaining screws (under $6 at any hardware store)
4. Plumber’s grease and a roll of PTFE (Teflon) thread-seal tape
5. A new packing washer or a wrap of graphite packing string, in case the handle leaks

If you have a frost-free sillcock, you may instead need a manufacturer-specific stem or cartridge — bring the old one to the store or match the brand and length. Frost-free stems commonly run 4, 6, 8, 10, or 12 inches, and the wrong length simply won’t seal.

What’s the step-by-step to replace the washer and stop the leak?

Replacing the washer is the fix that solves most drips. Do it in this order and you won’t flood anything:

1. Shut off the water feeding the outdoor faucet — usually an interior shut-off valve on the supply line, or the main if there’s no dedicated valve. Then open the spigot to bleed the pressure.
2. Unscrew the packing nut behind the handle (turn counterclockwise) and pull the entire stem assembly out of the valve body.
3. Inspect the washer at the end of the stem. If it’s flat, cracked, or grooved, unscrew the brass retaining screw and pop it off.
4. Install the matching washer — same diameter, same profile — and secure it with a fresh brass screw. Add a dab of plumber’s grease.
5. Check the seat inside the valve body with a fingertip. If it feels pitted or rough, that’s your “new washer still drips” culprit; it needs refacing or the faucet needs replacing.
6. Wrap the stem threads with PTFE tape, reinsert the stem, and hand-tighten the packing nut, then snug it a quarter-turn with the wrench.
7. Turn the water back on with the handle closed and watch for drips. Then open and close it once to confirm a clean shut-off.

If the leak was around the handle rather than the spout, the fix is even simpler — tighten the packing nut or add a new packing washer. That “won’t stop dripping” scenario overlaps heavily with indoor faucets too; if you want the deeper mechanics, our guide on stem replacement for a faucet that won’t stop dripping walks through the same stem-and-seat logic on other fixture types.

Why does my frost-free outdoor faucet still drip after I turn it off?

A frost-free (anti-freeze) hose bib drips after shut-off because its long internal stem seals way back inside the warm wall, not at the outside spout — and when that far washer or cartridge fails, water weeps out slowly. It also drips briefly and normally as the long horizontal barrel drains, so timing matters.

Frost-free sillcocks are built so the actual shut-off point sits 6–12 inches inside the heated wall, keeping the seal safe from freezing. Two things follow from that design. First, after you close it, the water sitting in that long barrel runs out for 10–30 seconds — totally normal, don’t panic. Second, when it genuinely leaks non-stop, the fix is a new cartridge or long-stem assembly matched to the brand and length, not a generic washer.

One critical install detail people miss: a frost-free faucet must be pitched slightly downward toward the outside so the barrel drains. If it was installed dead-level or tilted inward, water pools inside, never fully drains, and you get both persistent dripping AND freeze risk. If yours is mounted wrong or too short for your wall thickness, upgrading the whole unit is often the cleaner call — see our breakdown of when an outdoor faucet extension makes sense versus a full replacement.

When should I just replace the whole outdoor faucet instead of repairing it?

Replace the whole faucet when the valve body is corroded, the seat is too pitted to reface, the faucet has cracked from freezing, or it’s an old non-frost-free model in a cold climate. If the brass is green and crumbly or you’ve already replaced the washer twice, repairs are throwing good money after bad.

Here’s the practical decision line. A new standard hose bib costs roughly $10–$25; a quality frost-free sillcock runs $20–$50; a good anti-siphon model with a vacuum breaker sits in that same range. Against that, a plumber’s minimum service call is often $100–$200. So if the faucet is old, corroded, or freeze-cracked, replacement parts are cheap enough that a full swap is usually the smarter long-term move — you reset the washer, seat, packing, AND stem all at once.

Signs it’s replacement time, not repair time:

• Green/white corrosion crust on the body or threads
• A visible crack or bulge (classic freeze damage)
• The handle spins loosely or the stem strips
• You’ve swapped the washer and it still drips (dead seat)
• It’s a non-frost-free spigot in a region that freezes

When you do shop for a replacement, prioritize a solid brass body over cheap zinc alloy, a built-in anti-siphon vacuum breaker (code in most areas), and — in cold climates — a frost-free length that matches your wall thickness plus a downward pitch. If you’re not sure where to buy locally or what fittings you’ll need, our guide to finding a garden hose faucet nearby covers the sizes, thread standards, and finishes worth paying for.

How do I stop this from happening again next season?

Prevent a repeat by winterizing the faucet every fall, replacing washers proactively every few years, and using a frost-free or freeze-protected spigot if you live where it freezes. Most “sudden” outdoor faucet failures are actually slow wear plus one bad freeze — both are preventable.

A simple end-of-season routine: disconnect and drain all hoses (a hose left attached traps water that freezes and cracks the faucet), shut off the interior supply valve to the spigot, open the outdoor faucet to drain it, and slip an insulated faucet cover over standard bibs. That five-minute habit prevents the single most expensive version of this problem — a split pipe inside the wall. It’s the same logic behind preventing a frozen outdoor water faucet, and it pays for itself the first winter you skip a burst.

Author Note & Why You Can Trust This Guide

This article was written by the product and plumbing content team at ivigafaucet, drawing on hands-on faucet repair experience and feedback from our customer support desk, which fields real “my faucet won’t shut off” questions every week. ivigafaucet designs and sells faucets, hose bibs, shower systems, and bathroom fixtures direct to homeowners, and our valve components are built to standard NSF/ANSI and cUPC low-lead requirements for potable water. Every hose bib and sillcock we sell is pressure-tested before shipping and backed by a limited warranty on the valve body and internal cartridge — so if a seal fails within the covered period, you replace the part, not the whole faucet. We stay strictly in our lane: faucets and bathroom fixtures, tested against real plumbing codes, explained in plain language.

FAQ

Is it dangerous if my outdoor faucet keeps running after I shut it off?

It’s not immediately dangerous, but it wastes water and can cause real damage over time. A steady drip can add up to hundreds of gallons a month, saturate your foundation, and — if it’s actually a cracked pipe inside the wall — lead to hidden water damage and mold. Fix it promptly rather than letting it run.

Why does water come out for a few seconds after I close the faucet, then stop?

That’s normal drainage, not a leak. Water trapped in the hose or, on a frost-free faucet, in the long internal barrel drains out for 10–30 seconds after you close the valve. If it fully stops within a minute and stays dry, your faucet is sealing correctly.

Can a bad garden hose cause the faucet to leak even when it’s off?

Yes. A worn hose washer or a failed anti-siphon vacuum breaker can let water seep at the connection point even with the handle closed. Remove the hose entirely and watch the spout — if the drip stops, the problem was the hose gasket or vacuum breaker, both cheap and easy to replace.

How much does it cost to fix an outdoor faucet that won’t turn off?

A DIY washer or packing fix costs about $2–$6 in parts. A new frost-free sillcock runs $20–$50. If you hire a plumber, expect $100–$250 depending on whether it’s a simple swap or a soldered/in-wall pipe repair. Because parts are cheap and labor isn’t, replacing an old corroded faucet yourself is often the best value.

Why does my faucet still drip even after I replaced the washer?

Almost always because the valve seat — the brass surface the washer presses into — is pitted or scored, so a fresh washer can’t seal against it. You can try refacing the seat with a seat-dresser tool, but on an older faucet it’s usually faster and more reliable to replace the whole unit.

Is a frost-free outdoor faucet worth it if I’ve had this problem before?

If you live anywhere that freezes, yes. A frost-free sillcock moves the shut-off seal into the heated interior of your wall, which prevents the freeze-cracking that causes many “won’t shut off” leaks in the first place. Just make sure it’s the right length for your wall and pitched slightly downward so it drains.