HomeBlogBlogStop a Dripping Kohler Bathroom Faucet: Easy Fixes

Stop a Dripping Kohler Bathroom Faucet: Easy Fixes

How do I fix my dripping Kohler bathroom faucet?

A dripping Kohler bathroom faucet is usually caused by a worn cartridge, damaged washer/O-ring, mineral buildup, or a loose connection inside the handle. The fix depends on whether you have a single-handle or two-handle faucet, but the core steps are the same: shut off the water, disassemble the handle, inspect the sealing parts, and replace what’s worn.

1) Shut off the water and protect the sink

Close the hot and cold shutoff valves under the sink, then open the faucet to relieve pressure. Plug the drain so small screws don’t disappear, and lay down a towel to protect the finish.

2) Remove the handle and trim

Look for a small set screw (often underneath or behind the handle) and loosen it with an Allen key. Pop off any decorative cap to access a Phillips screw if needed. Remove the handle and any trim sleeve to expose the valve or cartridge.

3) Identify what needs replacing

Single-handle Kohler faucets: Most drips come from a failing cartridge. Pull the retaining clip or remove the bonnet nut (depending on model), then remove the cartridge. If it’s stuck, wiggle it gently—avoid twisting hard enough to damage the valve body.

Two-handle Kohler faucets: The leak may come from a worn stem washer, valve seat, or O-ring. Remove the stem assembly and inspect rubber parts for cracking, flattening, or tearing.

4) Clean mineral buildup and install new parts

Wipe the valve body clean and remove mineral deposits (white vinegar on a cloth works well). Install the correct Kohler replacement cartridge, washer, or O-ring and reassemble in the reverse order. Make sure everything seats squarely so the handle doesn’t bind.

5) Turn water back on and test

Slowly reopen the shutoff valves, then run the faucet and check for drips at the spout and leaks around the handle. If it still drips, confirm you used the correct cartridge/stem for your exact model and that the retaining clip/bonnet is fully secured.

For model-specific steps and part guidance, follow the detailed walkthrough here: https://agathin.com/how-do-i-fix-my-dripping-kohler-bathroom-faucet/.

FAQ

Why does my faucet drip even when it’s turned off?

A steady drip usually means the internal sealing surface isn’t closing fully—most often due to a worn cartridge, washer, or O-ring, or mineral buildup preventing a tight seal.