How to Repair a Dripping Faucet: A Step-by-Step Guide for Homeowners

Introduction

A dripping faucet is not just an annoyance—it can waste gallons of water over time and increase your utility bill. Whether you have a compression, cartridge, or ball-type faucet, the repair process is often simpler than you think. This guide walks you through diagnosing and fixing the problem yourself, saving you money on a plumber and extending the life of your fixtures.

Tools and Materials You'll Need

Before starting, gather the essential tools. A magnetic screwdriver set is invaluable for handling small screws in tight spaces. For any faucet repair, a faucet repair kit containing washers, O-rings, and seals is critical. You'll also need pliers, a basin wrench, Teflon tape, and a bucket to catch drips.

Diagnose the Faucet Type

Faucets come in four main types: compression, cartridge, ball, and disc. Each has a unique leak mechanism. Compression faucets drip from the spout when the washer wears out. Cartridge and ball faucets leak from the handle or spout due to worn O-rings or cartridge seals. Disc faucets rarely leak but may need a clean. Identify yours by checking the handle design—single or dual, quarter-turn vs. multi-turn.

Step 1: Shut Off Water Supply

Locate the shut-off valves under the sink. Turn them clockwise until tight. Open the faucet to release residual pressure. If there are no valves, shut off the main water supply. Place a bucket under the sink to catch water from disconnected lines.

Step 2: Disassemble the Faucet

Remove the handle screw (often under a decorative cap). Use the magnetic screwdriver set to avoid dropping screws. Take off the handle, then the escutcheon (trim ring) to expose the valve. For cartridge faucets, pull the retaining clip with needle-nose pliers. For compression faucets, unscrew the packing nut with a wrench.

Step 2a: Remove the Cartridge or Stem

Once exposed, lift out the cartridge (single-handle) or stem (dual-handle). Note the orientation for reinstallation. Inspect O-rings, washers, and seals for cracks or wear. In compression faucets, the stem will have a brass stem washer and a seat washer at the bottom.

Step 3: Replace Worn Parts

Using the faucet repair kit, match the new washers and O-rings to the old ones. Apply plumber's grease before installing. For cartridge faucets, install a new cartridge entirely. For compression faucets, replace the seat washer and stem washer. Install a new O-ring on the valve body if present.

Step 4: Reassemble and Test

Reverse the disassembly steps. Tighten all nuts and screws firmly but avoid overtightening (risks cracking). Turn the water back on slowly. Check for leaks at the handle and spout. If leaks persist, tighten the packing nut slightly or check the cartridge seating.

Common Problems and Solutions

If the faucet still drips after repair, you may need to replace the faucet seat (for compression) or flush debris from the cartridge. Use a drain cleaner gel to clear any blockages in the aerator. Hard water deposits can cause seals to fail prematurely. Soak parts in vinegar to remove mineral buildup.

Preventive Maintenance Tips

To extend faucet life, clean aerators every six months. Avoid using excessive force when closing handles. Install a water softener if you have hard water. Periodically inspect under sink connections for slow drips.

Conclusion

Fixing a dripping faucet is a rewarding DIY project that builds confidence in your home maintenance skills. With basic tools, a repair kit, and patience, you can save on plumbing costs and prevent water waste. Start by diagnosing your faucet type, follow the steps above, and enjoy a quiet, drip-free sink.