How to Fix a Leaking Faucet (Kitchen & Bathroom DIY Guide)

Reviewed by homemd.ai editorial team · Last updated: March 19, 2026

1. Identify Your Faucet Type

The fix depends on what kind of faucet you have. Look at your faucet and match it:

Not sure? Look for the brand name on the faucet (often on the base or handle). Moen and Delta are the most common — both use cartridges.

2. How to Fix It (Under 2 Hours)

1. Turn off water supply under the sink (two valves — turn both clockwise). Open the faucet to release pressure.
2. Remove the handle. Look for a small set screw — usually under a decorative cap on top or behind the handle. Use an Allen key to remove it.
3. Pull out the internal part:
   • Cartridge: Pull straight up with pliers (may be stiff). Note the orientation — it must go back the same way.
   • Ball: Remove the cap and ball assembly. Springs and seats are underneath.
   • Compression: Unscrew the stem. The rubber washer is at the bottom — pry it off and replace.
4. Take the old part to Home Depot and match it exactly. This avoids buying the wrong size.
5. Install the new part, reassemble, and turn water back on slowly.

Most faucet repairs need only an Allen key and pliers

3. Parts by Brand (Most Common)

Moen single-handle: Moen 1225 Cartridge — ~$15 — View at Home Depot

Delta single-handle: Delta RP46074 Cartridge — ~$20 — View at Home Depot

Delta ball-type: Delta RP3614 Ball Repair Kit — ~$15 — View at Home Depot

Two-handle (any brand): Everbilt Faucet Washer Assortment — ~$5 — View at Home Depot

Tools: Allen key set, Channellock pliers, maybe a Phillips screwdriver.

4. Cost Breakdown: DIY vs Plumber

You save $90–$245 doing it yourself. This is one of the most common home repairs and one of the easiest to learn.

5. When to Call a Plumber

• You replaced the cartridge/washer but it still drips — the valve seat may be damaged.
• The shut-off valves under the sink don't fully close — you can't safely work on the faucet.
• The faucet is very old and corroded — parts may not be available, full replacement may be more practical.
• You see water damage in the cabinet below — the leak may be from the supply lines, not the faucet itself.

FAQ

Why does my faucet drip after I turn it off?
A worn cartridge, washer, or O-ring no longer creates a watertight seal. The internal sealing part needs to be replaced — it's a $5 to $30 fix.

How much water does a dripping faucet waste?
A faucet dripping once per second wastes about 5 gallons per day, or 2,000+ gallons per year. That's $20–$50 on your water bill annually.

Can I fix a leaking faucet without turning off the water?
No. You must turn off the supply valves under the sink before disassembling the faucet. Working on a faucet with the water on will result in a flood.

How do I know what faucet cartridge I need?
Remove the old one and bring it to Home Depot to match. Or search your faucet brand + model number online. Moen 1225 and Delta RP46074 cover the majority of single-handle faucets.

Frequently Asked Questions