A dripping faucet isn’t just annoying—it can waste hundreds of gallons of water per year and drive up your utility bill. The good news is that most faucet leaks can be fixed with basic tools and a little know-how. This guide will walk you through the most common causes and solutions.
Before You Start
Turn off the water supply at the shut-off valves under the sink (turn clockwise). If you can’t find individual valves, turn off the main water supply to your home temporarily.
Gather your tools:
- Adjustable wrench
- Screwdriver set (flathead and Phillips)
- Needle-nose pliers
- Flashlight or headlamp
- Towels or rags
Identifying Your Faucet Type
Different faucet types require different repair approaches:
Ball Faucet: Single handle that moves in all directions, common in kitchens Cartridge Faucet: Single or double handle, uses a cartridge mechanism Compression Faucet: Two handles (hot and cold), older style with washers Ceramic Disk Faucet: Single handle, newer design with ceramic plates
Fix #1: Replace the O-Ring (Most Common)
Symptoms: Water dripping from the base of the spout or around the handle
Steps:
- Remove the faucet handle by unscrewing the packing nut with an adjustable wrench
- Locate the O-ring (small rubber ring) around the valve stem
- Carefully remove the old O-ring with needle-nose pliers
- Take the old O-ring to the hardware store to ensure you get the exact size
- Apply a thin layer of plumber’s silicone grease to the new O-ring
- Install the new O-ring and reassemble the faucet
- Turn water back on and test
Cost: $2-5 for a pack of O-rings
Fix #2: Replace the Washer (Compression Faucets)
Symptoms: Dripping from the spout when faucet is turned off
Steps:
- Remove the handle by unscrewing the screw in the center
- Use an adjustable wrench to remove the packing nut
- Pull out the valve stem
- Remove the old washer from the bottom of the stem (may be held by a screw)
- Replace with a new washer of the same size
- Also replace the valve seat if it’s damaged (rough or corroded)
- Reassemble in reverse order
Cost: $3-8 for washers and valve seats
Fix #3: Replace the Cartridge
Symptoms: Dripping from spout, difficulty turning handles, or mixed water temperatures
Steps:
- Remove the handle and any decorative caps
- Remove the retaining clip or nut holding the cartridge
- Pull out the old cartridge (may require pliers and some wiggling)
- Take the cartridge to the hardware store for exact replacement
- Insert the new cartridge, ensuring proper alignment
- Replace the retaining clip or nut
- Reassemble the handle
Cost: $10-25 for a replacement cartridge
Fix #4: Clean or Replace Valve Seats
Symptoms: Water leaking around the spout base
Steps:
- Remove the faucet handle and packing nut
- Use a valve seat dresser tool or fine steel wool to clean mineral deposits from the valve seat
- If the seat is severely damaged, it may need complete replacement
- Apply plumber’s grease before reassembling
Cost: $5-15 for valve seat dresser tool
Fix #5: Tighten Loose Parts
Symptoms: General dripping or wobbly handles
Steps:
- Check all visible nuts and screws for tightness
- Tighten the packing nut around the valve stem
- Ensure the handle screw is properly tightened
- Check that the spout is properly seated
Cost: Free (uses existing tools)
When to Call a Professional
Contact a plumber if you encounter:
- Cracked or corroded faucet body
- Water damage behind the wall
- Multiple plumbing issues throughout the house
- Comfort level exceeded with the repair complexity
- Local plumbing codes require professional installation
Prevention Tips
- Don’t over-tighten faucet handles, which can damage washers and O-rings
- Clean mineral deposits regularly with white vinegar
- Replace washers and O-rings every few years as preventive maintenance
- Address small leaks quickly before they become bigger problems
Troubleshooting Common Issues
Faucet still drips after repair: Double-check that all parts are properly aligned and tightened. You may have the wrong size replacement part.
Water pressure is low after repair: Check that you’ve fully opened the shut-off valves and that no debris is blocking the aerator.
Handle feels loose: The packing nut may need additional tightening, or the stem may be worn and need replacement.
Most faucet repairs take 30-60 minutes and cost under $20 in parts. With these fixes, you can solve the majority of leaky faucet problems without calling a plumber, saving both money and water.
