How to Fix a Dripping Faucet With Two Handles

That steady drip is not just annoying; it wastes gallons of water and quietly inflates your bill. Learning how to fix a dripping faucet with two handles is one of the most satisfying small plumbing repairs a homeowner can do, and it usually costs only a few dollars in parts. Two-handle faucets, with separate hot and cold controls, are typically compression or cartridge designs, and the fix depends on which type you have. The good news: the steps follow the same logic. Shut off the water, take the handle apart, replace the worn part, and reassemble. Here is exactly how.

First and Most Important: Shut Off the Water

Never start a faucet repair without shutting off the water supply. Under the sink you will find two shutoff valves, one for hot and one for cold. Turn both clockwise until they stop. If your sink has no local shutoffs, close the main water supply to the house. Then open the faucet to release pressure and drain the lines. Finally, plug the drain or lay a towel over it so small screws and parts cannot disappear down the pipe.

Identify Which Handle Is Dripping

Before you take anything apart, figure out whether the hot side, the cold side, or both are leaking. Often only one handle’s washer or cartridge is worn. Turn each side on and off and watch the spout to narrow it down. You may only need to rebuild one handle, which saves time and parts. That said, since you are already in there, replacing the worn parts on both sides is cheap insurance against a return trip.

Know Your Faucet Type

Two-handle faucets generally fall into two categories, and that determines what part you replace.

• Compression faucets use a rubber washer (a seat washer) that presses against a valve seat to stop water. These are common in older homes, and the drip almost always comes from a worn seat washer or a damaged valve seat.
• Cartridge faucets use a removable cartridge insert to control flow. When they drip, you usually replace the entire cartridge or its O-rings and seals.

You will know which you have once you remove the handle and look inside, so do not worry if you are unsure now.

Tools and Parts You Will Need

• An adjustable wrench and/or a set of pliers
• A Phillips and a flathead screwdriver
• A replacement washer, O-ring, valve seat, or cartridge to match your faucet
• A seat wrench (for compression faucets, to remove the valve seat)
• Plumber’s grease and plumber’s tape
• A rag and a small container for parts

Bring the old parts to the hardware store to match them exactly, since washers and cartridges come in many sizes and a near-match will leak.

Step-by-Step: Compression Faucet Repair

1. Remove the handle. Pry off the decorative cap on top, remove the screw underneath, and lift off the handle.
2. Unscrew the stem assembly. Use a wrench to loosen the packing nut, then unscrew the valve stem and pull it out.
3. Replace the seat washer. At the bottom of the stem is a rubber washer held by a brass screw. Remove the screw, swap in an identical new washer, and reattach.
4. Check the O-ring. Replace the O-ring around the stem if it looks cracked or flattened; this often stops leaks around the handle base.
5. Inspect the valve seat. Look down into the faucet body where the washer pressed. If the seat is pitted or rough, use a seat wrench to remove and replace it, or smooth it with a seat-dressing tool.
6. Reassemble. Apply a little plumber’s grease to the threads and O-ring, then reverse the steps to put it back together.

Step-by-Step: Cartridge Faucet Repair

1. Remove the handle the same way: pop the cap, remove the screw, lift the handle off.
2. Remove the retaining clip or nut that holds the cartridge in place. Some have a small clip you pull out with pliers; others have a threaded retaining nut.
3. Pull the cartridge straight out. Note its orientation so the new one goes in the same way; installing it backward swaps your hot and cold.
4. Replace the cartridge or its seals. For a worn cartridge, install an identical new one. If only the O-rings are bad, roll off the old ones and fit new O-rings with a dab of plumber’s grease.
5. Reinstall everything in reverse, reseating the cartridge in the correct orientation and securing the clip or nut.

Test Your Work

Turn the shutoff valves back on slowly and let the faucet run for a moment to clear air and debris. Check around the handles and the base for leaks, then shut the faucet off and watch the spout for several minutes to confirm the drip is truly gone. Open and close each handle a few times to make sure they move smoothly. If a small leak persists at the handle base, the packing nut may simply need a slight tightening or a fresh O-ring.

Why Faucets Drip in the First Place

Understanding the cause helps you fix it permanently rather than treating the symptom. In a compression faucet, the rubber seat washer gets compressed and worn every time you crank the handle closed, until it can no longer form a tight seal against the valve seat, and water seeps through as a drip. Hard water accelerates the wear and can corrode or scratch the brass valve seat, which is why a fresh washer sometimes still leaks against a damaged seat. In a cartridge faucet, the internal seals and O-rings degrade with age and mineral buildup, letting water past even when the handle is fully off. In short, drips are almost always a worn soft part, not a broken faucet, which is exactly why the repair is so affordable.

Preventing Future Drips

A few habits extend the life of your repair and the faucet itself. Avoid cranking the handles shut with excessive force, which crushes washers and seals prematurely; firm but gentle is enough to stop the flow. If your home has hard water, consider that mineral scale is the main enemy of faucet seals, so periodic cleaning of aerators and addressing very hard water can help. Keep a small kit of spare washers, O-rings, and a cartridge on hand so the next drip is a five-minute fix rather than a trip to the store. And when you notice the very first drip, address it promptly, since a worn washer left in place can score the valve seat and turn a simple washer swap into a bigger repair.

When to Call a Plumber

Most two-handle drips are well within DIY range, but call a professional if the valve seat is corroded beyond repair, if the faucet body itself is cracked, if you cannot stop a leak after replacing the obvious parts, or if the shutoff valves are seized or leaking. Sometimes a very old, corroded faucet is cheaper to replace entirely than to keep rebuilding.

The Bottom Line

Knowing how to fix a dripping faucet with two handles comes down to a simple routine: shut off the water, identify whether you have a compression or cartridge faucet, and replace the worn washer, O-ring, seat, or cartridge with an exact match. Bring the old part to the store, take photos as you disassemble, and test thoroughly before you finish. For a few dollars in parts and half an hour of work, you can silence that drip and stop wasting water for good.