How Do Plumbers Clear Blocked Drains?

Blocked drains are a common household nuisance that can disrupt daily life. When it comes to tackling stubborn clogs, plumbers employ a variety of effective techniques to ensure efficient drainage. In this comprehensive guide, we’ll explore how plumbers clear blocked drains, providing insights into their methods and expertise.

Plumbing Assessment

Before implementing any clearing technique, plumbers conduct a thorough assessment of the blocked drain. This involves identifying the nature and location of the clog, which guides the selection of the most suitable clearing method.

Video Inspection

  1. Inserting a Camera:
    • Plumbers use specialized cameras inserted into the drain to visually inspect the blockage.
  2. Locating the Clog:
    • The video feed helps identify the exact location and nature of the blockage.
  3. Assessment for Further Action:
    • Based on the inspection, plumbers determine the best course of action for clearing the blockage.

Mechanical Methods

Plumbers utilize various mechanical tools to physically dislodge or remove obstructions within the drainage system.

Plumbing Snake or Auger

  1. Inserting the Snake:
    • A plumbing snake, also known as an auger, is inserted into the drain.
  2. Rotating to Break Up Blockage:
    • The plumber rotates the snake to break up or grab hold of the clog.
  3. Pulling Out Debris:
    • Once the blockage is broken up, the plumber pulls out the debris.

Chemical Solutions

In some cases, plumbers may opt for chemical solutions to break down or dissolve clogs.

Safe Chemical Drain Cleaners

  1. Choosing the Right Cleaner:
    • Plumbers select safe chemical drain cleaners appropriate for the type of clog and plumbing system.
  2. Applying the Solution:
    • The chemical solution is carefully applied to the blocked drain.
  3. Allowing Time for Action:
    • Plumbers allow the chemical to sit and break down the clog before flushing the drain.


For more challenging blockages, plumbers may employ hydro-jetting, a high-pressure water jetting technique.

High-Pressure Water Jet

  1. Inserting a Jetting Nozzle:
    • A specialized jetting nozzle is inserted into the drain.
  2. Releasing High-Pressure Water:
    • High-pressure water is released, scouring the interior of the pipes and dislodging debris.
  3. Clearing the Drain:
    • The force of the water clears the drain, restoring proper flow.

Preventive Measures and Recommendations

After successfully clearing a blocked drain, plumbers often provide recommendations for preventive measures to avoid future issues.

Regular Maintenance Tips

  1. Use Strainers:
    • Plumbers recommend using strainers to catch debris and prevent it from entering drains.
  2. Avoid Flushing Certain Materials:
    • Educating homeowners about what should not be flushed down drains.
  3. Scheduled Professional Inspections:
    • Suggesting regular professional inspections to identify potential issues before they become serious.


In conclusion, plumbers employ a combination of assessment techniques, mechanical tools, chemical solutions, and advanced technologies to efficiently clear blocked drains. Their expertise ensures not only the removal of existing clogs but also provides valuable recommendations for preventing future drainage issues. When faced with a stubborn blockage, relying on the skills of a professional plumber can save time and prevent further damage to the plumbing system.