Why Is My Faucet Dripping From the Spout, and How Do I Stop It Fast?

If you’ve got a faucet dripping from the spout — that slow, maddening tap… tap… tap long after you’ve turned the handle off — the good news is this is one of the most fixable plumbing problems in your whole house. It’s not a broken pipe and it’s rarely the faucet body itself. Almost every time, one small part inside the valve has worn out and stopped making a watertight seal. Replace that part and the drip stops. This guide walks you through exactly what’s causing it, how to identify your faucet type, and how to fix it yourself without calling a plumber.

What actually causes a faucet to drip from the spout?

A faucet drips from the spout when the part that’s supposed to block water flow can no longer seal completely. Water is always under pressure in your supply lines, so even a hairline gap in a worn washer or cracked cartridge lets a thin trickle escape — and that trickle drips out the spout. It is a sealing failure, not a “loose” faucet.

Inside every faucet is a valve mechanism that opens and closes when you move the handle. Depending on the faucet, that mechanism relies on one of a few sealing parts:

• Rubber washer — the classic culprit in older compression faucets. Pressed against a metal seat every time you close the tap, it flattens, hardens, and cracks over years of use.
• O-rings — small rubber rings that seal around the stem or cartridge. When they dry out or tear, water sneaks past.
• Cartridge — a self-contained valve unit in most modern single- and two-handle faucets. Its internal seals or ceramic discs wear, chip, or collect mineral scale.
• Valve seat — the metal surface the washer presses against. If it corrodes or gets pitted by hard-water minerals, even a brand-new washer won’t seal against it.

Two things accelerate all of this: hard water (mineral deposits score the seals and pit the seat) and simply age plus use (rubber is a consumable — it has a lifespan). If you’re on well water or notice white crust around your fixtures, expect to replace these parts more often.

How do I know which type of faucet I have before I fix it?

Identify your faucet by how the handle moves and how many handles it has — that tells you which part is most likely dripping and which repair kit to buy. Getting this right before you shop is the single biggest time-saver in the whole job.

Two quick tips. First, if your faucet has a brand name stamped on it (Delta, Moen, Kohler, or a value brand like fransiton), write it down — cartridges are brand- and model-specific, and the wrong one won’t seat. Second, if you can’t tell the type from the outside, you’ll know for certain once you open the handle; just don’t buy parts until you’ve looked inside.

How do I fix a faucet dripping from the spout, step by step?

To fix a spout drip: shut off the water, open the faucet to relieve pressure, disassemble the handle, replace the worn washer/O-ring/cartridge, and reassemble. Here’s the full sequence — it applies to bathroom and kitchen faucets alike.

1. Shut off the water. Turn the two shutoff valves under the sink clockwise until they stop. No under-sink valves? Shut off the main. Then open the faucet and let it run dry to confirm the water is off and to release line pressure.
2. Plug the drain. Drop in a stopper or a rag so a dropped screw doesn’t disappear down the pipe.
3. Remove the handle. Pry off the decorative cap on top, remove the screw underneath, and lift the handle off. On many handles the set screw is hidden on the side and needs a hex/Allen key.
4. Pull the valve apart. Unscrew the retaining nut or clip and remove the stem or cartridge with pliers. Note the orientation — many cartridges only go back one way, and installing it rotated will reverse hot/cold or keep it dripping.
5. Inspect and replace. Look at the washer, O-rings, and cartridge. Flattened, torn, gummy, or crusted-with-scale parts are your answer. Replace them with exact matches. If the metal valve seat is pitted, dress it with a seat wrench/grinder or replace it.
6. Grease and reassemble. Coat new O-rings with plumber’s (silicone) grease, reinstall everything in reverse order, and hand-tighten firmly without overtightening.
7. Test slowly. Turn the shutoffs back on gradually, run the faucet, then turn it off and watch the spout for five minutes. Dry spout = you’re done.

If your dripping faucet is specifically a kitchen sink model with a pull-down sprayer or extra parts, our companion walkthrough on how to fix a dripping sink faucet in the kitchen without calling a plumber covers the sprayer-diverter quirks in more detail. And while you’re inside the faucet, it’s worth checking the faucet aerator too — a clogged aerator won’t cause a spout drip, but the same hard-water scale that ruins your seals also builds up there and hurts your flow.

What tools and parts do I need for this repair?

You need very little: a screwdriver set, an adjustable wrench or channel-lock pliers, a hex key, plumber’s grease, and the correct replacement seals or cartridge for your faucet. The total parts cost is usually under $25.

• Flathead + Phillips screwdrivers and a set of hex/Allen keys for set screws.
• Adjustable wrench or slip-joint pliers to loosen the retaining nut (wrap the jaws in tape to avoid scratching finishes).
• Replacement kit — a washer/O-ring assortment for compression faucets, or a brand-specific cartridge for modern ones.
• Silicone plumber’s grease to protect new rubber seals.
• White vinegar to dissolve mineral scale off the valve seat and cartridge housing.
• A cartridge puller (optional) if a scaled-in cartridge won’t budge.

Bring the old part to the store or match the model number online so you get an exact replacement. A close-but-not-identical washer or cartridge is the number-one reason a “fixed” faucet keeps dripping.

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

If your faucet still drips after a new cartridge or washer, the usual reasons are a damaged valve seat, a mismatched part, trapped debris, or an O-ring you didn’t replace. A fresh seal can only work if the surface it presses against is smooth and clean.

Run through this checklist:

• Pitted or corroded valve seat. A new washer sealing against a rough seat still leaks. Smooth it with a seat-dressing tool or replace the seat entirely.
• Wrong part. Even the correct-looking cartridge from a different model can seat improperly. Verify the exact brand and model.
• Grit in the valve. A tiny piece of debris or mineral flake between the seal and seat holds a channel open. Flush the valve body and wipe it clean.
• Skipped O-rings. People replace the cartridge but reuse old O-rings. Replace all the rubber at once.
• Cartridge installed rotated. Reseat it in the correct orientation.

If you’ve done all that and it still drips — or the faucet body itself is cracked or badly corroded — replacement is the smarter call. As a rough rule, if the fix would cost more than about half the price of a new faucet, or you’ve already done this repair once or twice on the same fixture, put the money toward a new one instead.

Is a dripping spout different from a leak at the base or under the sink?

Yes — a drip from the spout is a valve-sealing problem, while water at the base of the handle or under the sink is a different failure that needs a different fix. Diagnosing where the water actually appears saves you from replacing the wrong part.

If your problem is really the sprayer or a weak-then-dripping stream when you switch modes, that’s a diverter issue — our guide on the faucet spray diverter shows how to fix or replace one. And if you’re chasing a drip in the tub or shower instead of the sink, the same seal-failure logic applies; see our fixes for a dripping tub spout and a dripping shower faucet.

How much does a dripping faucet actually cost me if I ignore it?

A single steady drip wastes far more water than people expect — often 2,000 to 3,000 gallons a year, and a faster leak can waste 10,000+ gallons annually. That’s real money on your water bill for a problem a $10 part usually fixes.

Beyond the wasted water, an ignored drip causes secondary damage: mineral staining in the sink, worsening corrosion of the valve seat (which turns an easy washer swap into a full faucet replacement), and — with hot water — a small but constant load on your water heater. The faucet also gets noisier over time as the gap widens. Fixing a spout drip early is one of the highest-return 30-minute jobs in home maintenance.

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

Replace the faucet instead of repairing it when the body is cracked or heavily corroded, when the exact cartridge is discontinued, when you’ve already repaired the same drip more than once, or when the repair approaches half the cost of a new faucet. In those cases repairs become a losing battle.

A modern cartridge or ceramic-disc faucet is genuinely more drip-resistant than a decades-old compression unit, so an upgrade often ends the recurring problem for good. When you do shop for a replacement, look for solid brass construction, a ceramic-disc valve, and a finish backed by a real warranty — those three things are what separate a faucet that lasts 15 years from one that starts dripping in two.

FAQ

Can I stop a faucet dripping from the spout without turning off the main water?

Usually yes — most sinks have two dedicated shutoff valves on the supply lines directly under the basin. Turn both clockwise until they stop and you can work on the faucet while the rest of the house keeps water. Only if those valves are missing or seized do you need to shut off the main.

How long does it take to fix a dripping faucet?

For a typical single- or two-handle faucet, plan on 30 to 60 minutes once you have the right parts. The actual repair is quick; the time goes into shutting off water, disassembly, and making sure you install an exact-match washer or cartridge. First-timers should budget an hour.

Why does my faucet drip only at night or intermittently?

Intermittent dripping — worse at night or after no one’s used the tap — points to a worn seal that leaks slowly under standing pressure. Water pressure often rises at night when household demand drops, so a marginal seal that holds during the day gives up when the pressure climbs. The fix is the same: replace the worn washer, O-ring, or cartridge.

Is a dripping faucet covered under warranty?

Often, yes. Many faucet brands, including fransiton, offer multi-year or limited-lifetime warranties that cover the valve cartridge and finish. If your faucet is fairly new and drips from a failed cartridge, contact the manufacturer with your model number before buying parts — they frequently ship a free replacement cartridge.

Will a dripping faucet get worse if I wait?

Almost always. The gap that lets water past a worn seal only widens with continued pressure, and the escaping water accelerates mineral pitting of the valve seat. What starts as a slow drip becomes a steady trickle and can eventually corrode the seat badly enough that a simple washer swap no longer works — turning a cheap fix into a full replacement.

Do harder water areas need more frequent faucet repairs?

Yes. Hard water leaves mineral scale that scores rubber seals and pits metal valve seats, so faucets in hard-water homes tend to drip sooner and more often. A whole-home softener, periodic vinegar cleaning of the cartridge and aerator, and choosing ceramic-disc valves all extend the time between repairs.

A note from our team

About the author: This guide was written by the fransiton fixtures team, drawing on hands-on testing of single-handle, two-handle, compression, ball, and ceramic-disc faucets across real bathroom and kitchen installs. We’ve disassembled and rebuilt hundreds of dripping valves, so the steps here reflect what actually stops a spout drip — not just theory.

About fransiton: fransiton designs and sells faucets and bathroom fixtures at fransiton.net, engineered with solid-brass bodies and ceramic-disc cartridges and tested against recognized flow and durability standards (including low-lead compliance and cycle-life testing on our valves). Our faucets are backed by a limited warranty on the cartridge and finish, because a fixture that keeps dripping isn’t one we’d want in your home either. If your current faucet is beyond repair, we’re happy to help you find a replacement that won’t be back in this article next year.