Leaky Faucet Repair: DIY Guide to Stop Drips Fast

Drip... drip... drip. A faucet leaking one drop per second wastes over 3,000 gallons per year — enough for 180 showers — and can add hundreds to your water bill. The good news: most leaky faucets are caused by a single worn washer, O-ring, or cartridge that costs under $20 and takes less than an hour to replace. You do not need to be a plumber to fix it.

This guide walks you through identifying your faucet type, gathering tools, and repairing the four common faucet designs step by step.

What Type of Faucet Do You Have?

Repair steps differ by design. Identify yours first:

• Compression (two handles): separate hot and cold handles you tighten down. Oldest design, uses rubber washers that wear out — the most common leaker.
• Cartridge (one or two handles): handles turn a half-turn. A hollow cartridge controls flow. Very common in modern kitchens and baths.
• Ball (single handle): a rotating metal or plastic ball inside, common in older Delta kitchen faucets. Many moving parts, prone to drips.
• Ceramic disc (single lever): wide flat body with a lever over a ceramic cylinder. Most durable, but inlet seals still wear out.

Not sure? Take a photo under the handle after removing the cap — or check the brand and model stamped on the faucet body. If the faucet is heavily corroded or over 20 years old, full replacement may be smarter than repair; see our faucet installation guide for that process.

Tools, Parts, and Safety Prep

Gather these before you start:

• Adjustable wrench, Phillips and flathead screwdrivers, Allen wrenches
• Replacement washers, O-rings, or cartridge (take old parts to the store for exact matching)
• Plumber's grease, white vinegar, old toothbrush, towels, and a small bucket
• Penetrating oil for stuck nuts

Turn off both shut-off valves under the sink clockwise. Open the faucet to release pressure and confirm water is off. Plug the drain so tiny screws do not fall in. If the shut-off valves are stuck or leak when turned, do not force them — that is a job for a professional, similar to the caution around main shut-off valves.

Step-by-Step: Fixing Compression and Cartridge Faucets

These two cover roughly 80 percent of household leaks:

1. Remove the handle. Pry off the decorative cap, remove the screw, and lift the handle. Spray penetrating oil if stuck and wait 10 minutes.
2. Remove the packing nut and stem. Use an adjustable wrench on the packing nut, then unscrew the stem or pull the cartridge straight up with pliers.
3. Inspect and replace. On compression faucets, replace the rubber washer at the stem base and the O-ring around the stem. On cartridge faucets, swap in the identical new cartridge — note its orientation before removal.
4. Clean mineral buildup. Soak parts in vinegar for 15 minutes and scrub the valve seat with a toothbrush. Hard-water scale is a frequent culprit — see how hard water affects plumbing.
5. Reassemble with grease. Apply a thin coat of plumber's grease to O-rings, reassemble in reverse order, and tighten snugly — not gorilla-tight. Overtightening cracks cartridges and strips threads, one of the classic DIY plumbing mistakes.
6. Test slowly. Turn supply valves back on gradually, run the faucet, then shut it off and watch for drips for two full minutes.

Ball and Ceramic Disc Faucets: Quick Notes

Ball faucets: buy the model-specific repair kit (springs, seats, cam, ball). Replace all rubber parts at once rather than one at a time — mixing old and new parts causes repeat leaks within weeks. Keep parts in order as you disassemble; phone photos help.

Ceramic disc faucets: leaks usually come from worn inlet seals under the disc cylinder, not the discs themselves. Lift out the cylinder, replace the two or three rubber seals, clean the ports, and reseat carefully. Never scour the ceramic discs with abrasives — a scratched disc requires full cartridge replacement.

When Repair Is Not Worth It — Call a Pro

• Corroded valve seat or cracked body: if the brass seat is pitted beyond cleaning or the spout body is cracked, replace the faucet.
• No shut-off valves or leaking valves: working on live water lines risks flooding. A plumber can add or replace stops safely.
• Low pressure plus leaks: combined symptoms can indicate deeper supply or low water pressure issues beyond the faucet.
• High-end or wall-mounted fixtures: designer and wall-mount faucets have proprietary parts and tricky access — professional repair avoids costly finish damage.

A pro faucet repair typically costs $150 to $350 including parts, while a full replacement runs $200 to $600 depending on the fixture. Compare that to the water waste: a steady drip can add $20 to $50 per month to your bill, so prompt repair pays for itself.

Key Takeaways

• Identify your faucet type before buying parts — compression, cartridge, ball, or disc.
• Always shut off supply valves and plug the drain first.
• Replace washers, O-rings, or cartridges with exact-match parts.
• Clean mineral scale and use plumber's grease on reassembly.
• Do not overtighten — snug is enough.
• Corroded bodies or missing shut-offs mean call a professional.

Drip Driving You Crazy?

If the leak persists after new parts, or you would rather not tackle it yourself, we can help. Our licensed plumbers fix and replace all faucet brands quickly. Explore our full range of plumbing services or call us directly at (888)239-9523 for same-day service.