It can be uncomfortable to be in a foul-smelling laundry room, especially if the sewer is the source of the stench. There are a few different factors that might be why your laundry area smells like sewage. 

If your plumbing has leaks or your washing machine drain isn’t linked to the main sewage line, sewer gas might leak into the room. You could also notice that the smell is influenced by humidity and moisture. It’s crucial to locate the source and solve the issue to eliminate the stink. 

This post will answer the question, “why does my laundry room smell like sewage” and suggest eliminating the unpleasant smell. You can rid your laundry room of unpleasant odors and resume enjoying washing laundry by following a few easy steps.

Is Sewer Gas Dangerous?

Yes, specific quantities of sewage gas can be harmful. Sewer gas is a complex combination of gases from decomposing organic matter in a sewage system. 

Sewer gas also contains carbon dioxide, sulfur dioxide, and ammonia, which can lead to various health problems when breathed over extended periods. You should know the dangers of sewage gas and take precautions to limit your exposure.

Health Impacts of Sewer Gas

1. Hydrogen Sulfide Poisoning

Sewer gas often contains hydrogen sulfide, which is toxic if inhaled in significant quantities. The signs and symptoms include eye, nose, and throat irritation, breathing problems, coughing, headaches, nausea, and exhaustion.

2. Asphyxiation

Sewer gas in large quantities can asphyxiate a person. Gases from the sewer, such as ammonia and carbon dioxide, can displace oxygen and make breathing difficult. Asphyxiation causes lightheadedness, difficulty breathing, and headaches.

3. Fire and Explosion

Because sewage gas is so volatile, it can potentially result in fires and explosions in high quantities. Electrical appliances should not be placed close to regions where sewage gas is produced since electrical sparks are the most frequent fire source.

4.  Skin Irritation

If sewer gas comes in contact with your skin, it might irritate it. Symptoms can include itching, rashes, and redness.

5.  Eye Irritation

The nose, throat, and eyes are especially vulnerable to the irritant effects of sewer gases. The eyes may become red, irritated, and watery. Long-term exposure to these gases may exacerbate preexisting respiratory problems.

Why Does My Laundry Room Smell Like Sewage?

1. Leaking Pipes

Sewer gas can seep into your laundry room if there is a leak in the pipes. Examine the walls and floors for damp areas that may indicate plumbing leaks. If the leak isn’t fixed, sewer gas might build up in the laundry room.

2. A Dirty Washing Machine

Your washing machine can emit sewage-like odors if it is not maintained correctly. Cleaning it periodically ensures that lint and other debris aren’t building up within your washer.

Why Does My Laundry Room Smell Like Sewage

3. A Clog in the Drain Line

Your laundry room may experience a backup and an unpleasant odor if the washing machine drain is improperly linked to the main sewage system. Make sure the drain pipe is in place and unclog it if necessary.

4. Sewer Problems

Sewage smells may leak into your room if the laundry area is next to a sewer line. Consult a plumber to verify there are no problems with the sewage line.

5. A Lack of Ventilation

If your laundry room isn’t adequately ventilated, dampness can accumulate and produce a foul odor. You should get an exhaust fan and leave some windows and doors open to improve ventilation.

6. Problems With the Water Trap 

When properly installed, a water trap can help keep sewer gas away from your home. However, it could emit a foul odor if blocked or damaged. Make sure it is still working properly by checking it frequently.

7. Broken or Cracked Sewer Lines 

Sewage odors can be caused by a damaged or cracked sewer pipe that allows waste to escape. Ensure there is no line damage by having a plumber check them out.

How Do You Get Rid of Sewer Smell in the Laundry Room?

1. Use bleach to disinfect the washing machine.

The washing machine must be emptied, then refilled with hot water and one cup of bleach. To clean and sanitize the machine, simply run a standard cycle.

2. Pay Attention to Airflow

Let in some fresh air and lower the relative humidity by opening the windows and doors. Ventilate the space properly by setting up an air conditioner or exhaust fan.

3. Use Vinegar to Remove Build-Up

Fill your washer with hot water, then add one cup of white vinegar. After an hour, do a complete cycle to eliminate the residue.

4. Use some soap and water to clean your washing machine.

Remove any lingering smells from your washing machine by cleaning it with water and mild detergent. Scrub those tough-to-reach spots with an old toothbrush.

5. Use Baking Soda and Vinegar to Clean Your Drain Line

Pour an equal amount of vinegar and baking soda down the drain and let it rest for an hour. Flush some hot water through it to eliminate the smells and buildup.

6. Inspect the Shower Drain and Repair It If Necessary 

Clogged shower traps are a common source of unpleasant scents. If you suspect it may be broken or damaged, call a plumber.

7. Examine the P-Trap and Make Any Necessary Repairs

The purpose of the  P-trap is to stop sewage from backing up into your house. If it is damaged or clogged, it has to be repaired immediately.

Why Does My House Smell Like Rotten Eggs When I Do Laundry?

Several potential causes for the unpleasant odor of rotting eggs that might linger after doing the laundry. Possible causes include a blocked P-trap or water line, a filthy washing machine, insufficient airflow, or a leaking pipe. 

Washing machines may be deodorized by disinfecting them with bleach, improving laundry room airflow, removing residue with vinegar, and cleaning the machine with water and soap. Shower traps and P-traps should be inspected for blockages and damage and repaired if necessary.

Can Sewer Gas Come Up Through the Washing Machine?

Yes. If the washing machine is not properly maintained or not hooked up to the main sewage line, sewer gas might rise via the drain. If the drain pipes are clogged or the washing machines aren’t clean, sewage gas might leak into the laundry room. 

Regularly inspecting and correctly installing the drain hose can prevent this from happening. Additionally, you should check for blockages in the washing machine drain, the shower drain, and the P-trap and get these fixed if necessary.

How Do I Find The Sewer Smell In My House?

A sewage stench can be pretty off-putting, but there are techniques to track it down. The first order of business is looking for plumbing leaks or cracks inside the walls and flooring. You should check for blockages and damaged parts in your shower trap, washing machine trap, and P-trap. 

Finally, ensure your laundry area has no excess buildup and an effective exhaust fan. Humidity can also be reduced by letting in some fresh air from outside through open windows and doors. You should contact a plumber if you still need help locating the source.

Why Does My Laundry Room Smell Like Sewage

Is It Harmful To Smell Sewer Gas?

Yes, extended exposure to sewage gas can be damaging to your health. Methane, hydrogen sulfide, and carbon monoxide are only a few toxic chemicals that make up sewer gas. 

Decomposing sewage releases gases that are harmful to inhale over time. If you smell sewage gas in your home, you must find out where it’s coming from and fix it immediately.

Can Sewer Gas Smell Make You Sick?

Breathing in the stench of sewage gas for too long might make you sick. It contains toxic gases like methane, hydrogen sulfide, and carbon monoxide. 

If these gases are breathed in, they can induce various unpleasant side effects, including dizziness, nausea, and even chest pain. If you smell sewage gas in your house, locate the leak immediately.

Does Sewer Smell Come And Go?

Yes, sewer smells do reappear periodically. This is typically brought on by releasing methane gases from decomposing sewage or a backed-up drain pipe. 

A clogged main sewer line, a leaking pipe, a malfunctioning shower trap or washing machine, or a combination of these might all account for a reoccurring stench. The stench can be eliminated by having a licensed plumber inspect the problem and make the necessary repairs.

Frequently Asked Questions

Is there a device to detect sewer gas?

Yes. There are detectors on the marketplace that can detect sewage gas and sound an alarm if they come into contact with it. These gadgets utilize air-quality sensors to detect rising concentrations of methane and other dangerous gases, allowing you to detect plumbing problems on the spot. 

Some gadgets even have alarms when methane levels go dangerously high. A licensed plumber should regularly install and inspect these devices to guarantee your property’s safety.

Can vinegar remove the sewer gas smell?

Yes. If your home smells like sewage gas, you can eliminate it with vinegar. Just pour a solution of equal parts warm water and white vinegar down the drain. The solution will aid in the breakdown of any organic materials that create the odor. 

You may also use it to clean the drains in your kitchen and bathroom or to eliminate the musty stench from any drains in your home. Lastly, it’s recommended that you open all the doors and windows in your house to let in some fresh air and flush out any lingering scents.