To repair a leaky faucet, you need to identify your faucet type and replace the worn washer, O-ring, or cartridge. This guide teaches you how to repair a leaky faucet step by step, saving water and avoiding costly plumber visits. A dripping faucet can waste hundreds of gallons per year—fixing it is both eco-friendly and economical. Whether you have a compression, cartridge, ceramic disc, or ball-type faucet, the process is straightforward with the right tools and a little patience.
Understanding Your Faucet Type
Before you start, identify your faucet’s design. Each type has a different mechanism and common failure points. The four main types found in US homes are compression, cartridge, ceramic disc, and ball-type faucets.
Compression Faucets
Common in older homes, compression faucets have separate hot and cold handles. Leaks usually come from a worn rubber washer or O-ring. You’ll need to remove the handle, unscrew the packing nut, and replace the washer.
Cartridge Faucets
Found in many single-handle faucets, cartridge faucets use a cylindrical cartridge that controls flow and temperature. A leak often means the cartridge needs replacement. Pull the handle, remove the retaining clip, and swap the cartridge.
Ceramic Disc Faucets
Modern faucets often use ceramic discs that are very durable. Leaks are rare but can occur if debris scratches the disc or if the disc assembly fails. Cleaning or replacing the disc is required.
Ball-Type Faucets
Common in kitchen faucets with a single ball handle, these use a rotating ball with springs and seals. Leaks typically come from worn rubber seals or springs. You’ll need to disassemble the ball mechanism and replace the seals.
Tools and Materials You’ll Need
- Adjustable wrench or basin wrench
- Screwdrivers (Phillips and flathead)
- Allen wrench set (for some handles)
- Replacement parts (washer, O-ring, cartridge, or disc kit)
- Plumber’s grease (silicone-based)
- Towels or a small bucket
- Flashlight (for under-sink visibility)
Step-by-Step Repair Process
Follow these steps for a typical faucet repair. Always turn off the water supply first.
Step 1: Turn Off Water Supply
Locate the shutoff valves under the sink. Turn them clockwise to stop water flow. If there are no local valves, shut off the main water supply. Open the faucet to relieve pressure and drain remaining water.
Step 2: Remove the Handle
Use a screwdriver or Allen wrench to remove the handle screw. Some handles have a decorative cap that pries off. Gently lift the handle off the stem.
Step 3: Identify and Replace the Worn Part
Depending on your faucet type, you’ll see the stem, cartridge, or ball assembly. Inspect for cracks, wear, or mineral buildup. Replace the faulty component—a washer, O-ring, cartridge, or disc. Apply plumber’s grease to new rubber parts before reassembly.
Step 4: Reassemble and Test
Reverse the disassembly steps. Tighten connections firmly but avoid overtightening. Turn the water supply back on and check for leaks. Run the faucet for a minute to ensure smooth operation.
Faucet Type Comparison Table
| Faucet Type | Common Leak Cause | Replacement Part | Difficulty |
|---|---|---|---|
| Compression | Worn washer or O-ring | Rubber washer, O-ring | Moderate |
| Cartridge | Failed cartridge | New cartridge | Easy to moderate |
| Ceramic Disc | Scratched disc or debris | Disc assembly or cleaning | Moderate to hard |
| Ball-Type | Worn seals or springs | Seal kit (springs, O-rings) | Moderate |
When to Call a Professional
Some leaks are beyond a simple DIY fix. If you encounter stripped threads, corroded valve seats, or persistent leaks after replacing parts, it’s time to call a licensed plumber. Also, if your faucet is very old or you’re uncomfortable working with water lines, professional help can prevent damage. At MyTownPlumber, we handle all types of leak detection and drain cleaning, and we can also assist with toilet repair if you have other plumbing issues.
According to the EPA WaterSense program, fixing household leaks can save nearly 10,000 gallons of water per year. The U.S. Department of Energy also notes that reducing hot water leaks lowers energy costs. Both agencies encourage homeowners to repair drips promptly.
Frequently Asked Questions
Q: Why is my faucet still dripping after I replaced the washer?
A: The issue may be a worn valve seat or a damaged O-ring. Sometimes the washer doesn’t seat properly if the seat is pitted. Use a seat dressing tool or call a plumber.
Q: Can I repair a leaky faucet without shutting off the water?
A: No. Always shut off the water supply to avoid flooding and injury. Even a small drip can become a gusher if you disconnect a line.
Q: How much does it cost to hire a plumber for a faucet repair?
A: Typical US rates range from $100 to $250 depending on your region and the complexity. DIY repair costs are usually under $20 for parts.
Q: What tools do I need for a cartridge replacement?
A: A screwdriver, adjustable wrench, and possibly a puller tool if the cartridge is stuck. Most home faucet cartridges can be removed with basic tools.
Q: How often should I replace faucet washers?
A: Washers wear down over time, especially in hard water areas. Check them every two to three years or when you notice a drip.
Q: Is a leaking faucet an emergency?
A: Not usually, but it can waste water and cause mold or damage if ignored. If the leak is severe or the handle breaks, treat it as urgent.
If you’re unsure about any step, or if your leak persists, don’t hesitate to contact the professionals at MyTownPlumber. We offer fast, reliable service for all plumbing needs. Get a special plumbing offer today and stop that drip for good.
— MyTownPlumber Editorial Team