How to Fix a Leaky Faucet: A Step-by-Step Guide

Quick Overview

A leaky faucet wastes water and money while driving you crazy with that constant drip. Most leaks come from worn washers, O-rings, or cartridges. With basic tools and about 30-60 minutes, you can fix it yourself. This guide walks you through identifying the problem and making the repair.

I've fixed dozens of leaky faucets over the years, from old compression types in my first apartment to modern cartridge models in recent homes. The key is patience and having the right parts on hand. Let's start with preparation.

Step 1: Gather Your Tools and Materials

Before touching the faucet, collect what you need. Essential Workman Tools for Plumbing Projects include:

• Adjustable wrench
• Screwdrivers (flathead and Phillips)
• Pliers (needle-nose work best)
• Allen wrench set (for some handles)
• Plumber's tape (Teflon tape)
• Replacement washers, O-rings, or cartridge (match your faucet type)

For more details, check out Top 10 Plumbing Tools Every DIYer Should Own. These basics cover most jobs without needing fancy gear.

Choosing the Right Tools for Your Plumbing Needs matters. An adjustable wrench saves space compared to multiple fixed sizes. Pliers help grip small parts without slipping. Start simple—most fixes need just these.

Step 2: Identify Your Faucet Type

Faucets vary, and repair steps change based on the type. Common ones include:

• Compression: Two handles, older style, uses rubber washers.
• Cartridge: Single or two handles, uses a replaceable cartridge.
• Ball: Single handle with a ball mechanism.
• Ceramic Disc: Modern, durable, uses ceramic discs (rarely leaks but hard to fix).

Look under the sink or remove the handle to check. If unsure, take a photo and show it at a hardware store.

Step 3: Turn Off the Water Supply

Always start here to avoid a flood. Find shut-off valves under the sink—turn them clockwise to close. If missing or stuck, shut off the main house valve. Open the faucet to drain remaining water. This simple step prevents mess and pressure issues.

Step 4: Disassemble the Faucet

Cover the drain to avoid losing small parts. Pry off any decorative cap on the handle with a flathead screwdriver. Unscrew the handle screw (often hidden). Lift off the handle.

For compression faucets, use the wrench to loosen the packing nut, then unscrew the stem. Remove the old washer at the bottom—replace it with a new one coated in plumber's grease.

For cartridge types (most common today), pull out the retaining clip or unscrew the nut, then lift the cartridge straight up. Take it to the store for an exact match.

In my experience, mineral buildup from hard water often causes sticking. Soak parts in vinegar if needed. Clean everything before reassembly.

Step 5: Replace Faulty Parts

Inspect O-rings along the stem or cartridge—they wear out and cause leaks around the base. Replace any cracked or flattened ones. Lubricate new ones with plumber's grease for smooth fit and longer life.

For ball faucets, replace the entire ball assembly if worn. Ceramic disc models usually need full replacement if leaking— they're tough but not DIY-friendly for internals.

Step 6: Reassemble and Test

Put everything back in reverse order. Don't overtighten—snug is enough to avoid cracking parts. Turn water back on slowly. Check for leaks. Run hot and cold water fully. If it drips, double-check the washer or cartridge seating.

Pro tip: Apply plumber's tape to threaded parts if you see any pipe connections. While this guide focuses on faucets, How to Choose the Right Pipe for Your Plumbing Needs helps if you ever expand to bigger fixes.

Common Mistakes to Avoid

• Forgetting to shut off water (messy!)
• Overtightening nuts (strips threads)
• Using wrong replacement parts (won't seal)
• Ignoring O-rings (causes base leaks)

Take your time—rushing leads to repeat work.

Fixing a leaky faucet saves hundreds of gallons yearly and cuts your water bill. Most jobs cost under $20 in parts versus $150+ for a plumber call.

Final Thoughts

With practice, you'll handle this repair confidently. Start small, and soon you'll tackle more plumbing tasks. A drip-free home feels great—and quieter! If issues persist, consider calling a pro for hidden problems.