Why does my kitchen sink keep blocking | United Plumbing Blog


Why does my kitchen sink keep blocking?

If your kitchen sink keeps blocking despite your efforts to prevent it, there might be underlying issues causing the repeated clogs. Here are some common reasons why your kitchen sink might keep blocking:

Reasons Why Your Kitchen Sink Keeps Clogging

Food and Grease Buildup: Even with precautions, food particles, grease, and oil can accumulate in your pipes over time, leading to blockages.


Wrong Use of Garbage Disposal: Putting the wrong items down the garbage disposal or overloading it can lead to clogs. Fibrous foods, large chunks of food, coffee grounds, and grease should never go down the disposal.

Faulty Plumbing or Installation: If your plumbing is old, damaged, or improperly installed, it can cause drainage issues and frequent clogs.

Hard Water Deposits: If you have hard water, mineral deposits can accumulate in your pipes over time, reducing water flow and leading to blockages. You can read how to check water hardness here.

Tree Root Intrusion: If you have trees or shrubs near your sewer lines, their roots can grow into the pipes, causing blockages.

Pipe Misalignment or Bellied Pipe: Over time, pipes can shift, become misaligned, or develop bellies (low spots where waste collects), leading to blockages.

Foreign Objects: Accidentally dropping items like utensils, bottle caps, or small toys down the drain can cause blockages.

Damaged Pipes: In extreme cases, pipes can damage due to age, shifting soil, or other factors, leading to complete blockages. Corrosion of pipes may also be one of the reasons.

To address the recurring blockages, you may need to:

Have your plumbing inspected by a professional to identify any underlying issues.

Consider using a plumbing snake to clear stubborn clogs.

Install a grease trap to prevent grease and oil from entering your plumbing system.

Use enzyme-based drain cleaners regularly to break down organic matter in your pipes.

Avoid using chemical drain cleaners, as they can damage your pipes over time.

By identifying and addressing the root cause of the blockages, you can keep your kitchen sink draining smoothly.

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