What to do if sewage backs up in a floor drain What should you do?

Author: Guy Tromp  |  Last update: Friday, July 25, 2025

The first thing you should do is turn off the water supply to the main line. Next, remove all debris from the drain. Then, pour hot water down the drain until the clog is loosened. If the clog still won't budge, call a professional.

What to do if sewage backs up in a floor drain?

If you see water or sewage backing up from the line, or notice a foul smell, you need to hire a professional plumber or sewer cleaner to use a camera or a jetting machine to identify and remove the obstruction, as well as check for broken pipes and tree roots.

How do you fix a backed up sewer drain?

Boiling Water, Baking Soda, and Vinegar: Sometimes, a combination of boiling water, baking soda, and vinegar can help dissolve and dislodge minor blockages. Pour half a cup of baking soda down the drain, followed by half a cup of vinegar. Let it sit for a few minutes, then flush it with boiling water.

How do you deal with sewer backup?

10 Steps to Deal With Sewage Backup Quickly and Efficiently
  1. Turn Off the Water Supply and Electricity. ...
  2. Evacuate the Affected Area. ...
  3. Wear Protective Clothing. ...
  4. Ventilate the Area. ...
  5. Remove Standing Water. ...
  6. Disinfect the Area. ...
  7. Remove or Dispose of Contaminated Items. ...
  8. Avoid Using Household Cleaning Products.

Is it safe to stay in a house with sewage backup?

Sewage backup is a serious issue that requires immediate attention and professional intervention. Due to the health hazards associated with sewage contamination, it is not safe to stay in a house with sewage backup.

Floor drains: why they back up, what to do about a missing cleanout plug

Is sewer backup an emergency?

Backed up sewer lines, line breaks, sewage odors, and overflowing manholes are considered an emergency. When a sewage backup is occurring, do not use your toilet, shower, washing machine, or other appliances that send water down a drain.

How do you stop backflow from sewage?

Connect every water pipe to a vent pipe to allow air involved in the sewage movement process to exit. Connect every vent pipe to a vent stack, a vertical pipe that goes to the exhaust point at the roof. Ensure that all vent pipes (and soil lines in septic systems) are clear of any blockage.

How long does it take to fix a sewage backup?

Clearing a clogged sewer line may take between one and three hours. Performing a complete sewer line replacement using trenchless methods may take two or fewer business days. Replacing a sewer line using traditional trench-reliant methods may take three or more business days.

What can cause a sewer back up?

Sewer overflows can be caused by a number of factors, such as:
  • Blockages in sewer lines.
  • Pipe breaks or cracks due to treat roots.
  • Pipe deterioration.
  • Accumulation of grease, tree roots, hair, or solid materials such as disposable diapers, feminine hygiene products, or personal care wipes.

How to clean out a floor drain?

How to Unblock a Floor Drain
  1. Remove the P-trap. The P-trap is the curved drain pipe under the drain that traps water. ...
  2. Clear debris in the P-trap. ...
  3. Snaking time. ...
  4. Drain cleaner. ...
  5. Plunge it. ...
  6. Wet vacuum. ...
  7. Repeat if needed. ...
  8. Flush with boiling water.

What to do if septic backs up?

If sewage has backed up into the basement, clean the area and disinfect the floor. Use a chlorine solution of a half cup of chlorine bleach to each gallon of water to disinfect the area thoroughly. Pump the septic system as soon as possible after the flood. Be sure to pump both the tank and lift station.

Why is my toilet backing up into the floor drain?

A floor drain backing up with feces is usually caused by a blockage in the drain line. The first thing to do is to remove any debris from the bottom of the tank. Next, check for a clog in the trapway. If there is no clog, then you should call a plumber.

How do you clear a backed up sewer drain?

Start by removing any visible and solid obstructions from the drain, like hair or food particles. Pour 1 cup of baking soda down the drain. Slowly pour the 2 cups of white vinegar down the drain over the baking soda. The mixture will create a fizzing reaction, which can help break down the gunk in the drain.

Are floor drains connected to sewer?

A basement floor drain shall be: Connected to the house sewer; Properly trapped and vented; Readily accessible for cleaning; and.

How do you deal with sewer overflow?

Clean and disinfect all contaminated areas. Keep children and pets away from contaminated objects and areas until they have been disinfected. Contact a plumber if you suspect your plumbing or septic tank system is damaged. Clean out silt and debris from septic tanks.

How do you fix sewage is backing up?

Quick Fixes for Sewer Backups
  1. Use a Plunger – the easiest and most available drain opener around. ...
  2. Buy a Liquid Drain Cleaner – to unclog a sink or bathtub. ...
  3. Release Pressure - by turning off the water at the main supply first. ...
  4. Chemical Drain Cleaning – help with tree roots blockages.

How much does it cost to fix a sewage backup?

A sewage spill can be damaging not only to your home, but also to your finances. Most sewer backup cleanup and restoration services cost between $2,000 and $10,000.

How long does it take to get sick from sewage backup?

How Long Does It Take to Get Sick From Sewage Backup? If you have become sick due to contact with sewage, you will likely start to develop symptoms within 1 to 3 days. If your symptoms are very severe and last longer than two days, you should call your healthcare provider for help.

How to stop a floor drain from backing up?

If you do not have a backwater valve, plugs with backflow devices can be installed in floor drains. These plugs have a ball or float that will stop water or sewage from backing up into a home while permitting water to flow into the drain. These plugs can be left in place year-round.

How do you solve backflow?

  1. Install Check Valves. Check valves are key devices for preventing backflow. ...
  2. Install a Backflow Preventer. Backflow preventers are specialized devices designed to protect your whole building from backflow. ...
  3. Add an Air Gap. An air gap is a non-mechanical pressure regulation method that helps prevent backflow.

What is the correct response to sewage backflow?

The correct response to a sewage backflow is to report it to the municipal water authority. When managers suspect a foodborne illness, they should take immediate action and report the incident to the local health department.

Can you stay in a house with sewage backup?

Quickly handling sewage backups is important for everyone's safety. If left untreated, it can cause more health problems and damage to the house. It's not something you should ignore. Living in a house with sewage backup is very risky.

How do I stop my sewer backup?

A common device called a Backflow Preventor (BFP) can be installed in your plumbing system by a licensed plumber, and can effectively shut off the home or business from the street sewer system during extreme sewage backups. Automatic and manual BFPs are available.

How long does it take to fix a backed up sewer?

For a trenchless sewer line repair method, the work can often be completed in as little as two days. For the traditional sewer line replacement method, homeowners can expect the process to last several days. Homeowners depend on a fully-functional sewer line to transport liquid and solid waste away from their homes.

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