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Hands fitting a pipe under a kitchen sink
This week Plumbing

Kitchen sink clogged

Water sits in the sink or drains very slowly; the dishwasher may back up into it.

What you're probably seeing

Water sits in the sink or drains very slowly; the dishwasher may back up into it.

Likely causes

  • Grease, food scraps and coffee grounds built up in the drain line.
  • A clog in the garbage disposal or its drain connection.
  • A blockage further down the branch or main line if other drains are slow too.

Safe checks you can do now

  1. Run the disposal (with water) and press its reset button if it hums.
  2. Try a cup plunger with the other sink side plugged.
  3. Skip chemical drain openers on a fully blocked drain.

When to call a pro

The sink won't clear after plunging, more than one drain is slow, or water backs up elsewhere.

General information about common causes, not a diagnosis of your home.

FAQ

Quick answers

Who fixes kitchen sink clogged?

A plumber. Call (833) 835-1569 to connect with an independent local plumber.

How much does it typically cost?

Drain cleaning: $100–$800; Main sewer line cleaning: $200–$500 (hydro jetting $600–$1,400) (HomeGuide 2026 national ranges). Your pro sets the real number after seeing the job.

When should I call?

The sink won't clear after plunging, more than one drain is slow, or water backs up elsewhere.

Something not right at home?

Put it on the radar.

Tell us what you're seeing. We'll show you what it probably is, what it typically costs, and connect you with a local pro who fixes it.

Call a plumber · (833) 835-1569