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How to fix sewage backup in my bathtub?

Fix your bathtub sewage backup safely with step-by-step instructions on clearing clogs, cleaning the P-trap, flushing drains, and preventing future problems.

Reviewed by Content Team

Head of Content, D. Gorenko

Updated June, 5

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How to fix sewage backup in my bathtub?

 
Safety First
 

  • Before you begin, ensure you are wearing protective gloves, goggles, and old clothing, as sewage backup can contain harmful pathogens.
  • If the backup is severe, consider wearing a mask to avoid inhaling potentially toxic fumes.
  • Ensure the area is well-ventilated and avoid contact between the sewage and any electrical outlets or appliances.

 
Assess the Backup Situation
 

  • Determine if the sewage is isolated to the bathtub or if it is affecting other drains in your home.
  • Check whether the backup results from a clog in the bathtub's drain, a problem with the P-trap, or a main sewer line issue.
  • Look for any signs of structural damage or flooding that may require immediate professional attention.

 
Remove Visible Debris
 

  • Carefully remove any visible solid debris near the drain opening using a bucket or a dustpan.
  • Dispose of the debris in a sealed plastic bag to avoid contamination of other areas.
  • Wipe down the area around the drain with disinfectant after removing the debris.

 
Attempt to Clear the Clog Using a Plunger
 

  • Fill the bathtub with a few inches of water to ensure the plunger creates a good seal over the drain.
  • Place the plunger firmly on the drain and use quick, forceful thrusts to attempt dislodging the clog.
  • After several vigorous plunges, remove the plunger and check to see if the water is draining more freely.

 
Use a Drain Snake
 

  • Insert a drain snake or auger into the drain until you feel resistance from the clog.
  • Slowly rotate the tool to break up the clog while gently pushing forward.
  • Once you feel the blockage give way, slowly pull the snake out, taking care to retrieve any debris attached to it.
  • Repeat the process if necessary until you notice an improvement in the drainage.

 
Clean the P-Trap if Accessible
 

  • If the clog appears to be in the P-trap (the curved segment of the pipe under the tub), locate and remove it if possible.
  • Place a bucket underneath to catch any residual water or sewage before unscrewing the connections.
  • Clean out the P-trap thoroughly using a brush and a mixture of baking soda and vinegar, then rinse with hot water.
  • Reassemble the trap securely after cleaning.

 
Flush the System
 

  • After clearing the clog, run a large quantity of water to flush out any remaining debris.
  • A mixture of hot water and a mild cleaning agent, such as dish soap, can help break down remaining grease and grime.
  • Observe the water flow; if the data continues to indicate slow drainage, repeat the steps as necessary or try an alternative method.

 
Evaluate and Prevent Future Problems
 

  • Consider installing a drain cover or strainer to prevent larger debris from entering the bathtub drain.
  • Schedule routine drain cleaning maintenance to reduce the accumulation of grease, hair, and other clogging materials.
  • Monitor your plumbing system regularly for any signs of recurring issues.

 

If you live in St. Louis or Nashville, keeping these guidelines handy can be very beneficial for addressing both minor clogs and larger plumbing issues.

 
When to Call a Professional
 

  • If your efforts do not resolve the backup or if the sewage backup appears to be widespread, it is essential to contact a qualified plumber immediately.
  • A professional inspection can determine if the blockage is due to a more serious issue in the main sewer line or other parts of your plumbing system.
  • Timely professional intervention can prevent further property damage and potential health risks.

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