When It Rains My Septic Tank Smells? (Solution found)

If You’re on a Septic Tank Raining often causes atmospheric pressure changes, which can lead to the air becoming heavy. As such, the methane gases typically found in the septic tank don’t flow through the vent as they normally would. Instead, they stay low to the ground, causing a foul smell similar to rotten eggs.

Why does my house smell like septic?

  • There are a few different cited causes of septic system odor. One reason why you may smell an odor coming from your septic system is due to blocked plumbing vents. When plumbing vents are obstructed for one reason or another, the plumbing traps can become dry causing an odor which will back up into the home.

How do I stop my septic tank from smelling when it rains?

Run water through your drains frequently. Typically, houses with more than one bathroom suffer from septic smells more often when it rains because one of the bathrooms is used less often. By running water in all your sinks, showers, toilets, and drains every couple of months, you can prevent this kind of issue.

Why does my house smell like sewage when it rains?

When it comes to a sewage smell in your home after rain, the most common culprits are cracked pipes and clogged drains. If you have trees in your yard, roots are a common cause of cracked or broken pipes. In addition, tree roots can also crack your septic tank.

Is rain bad for septic tanks?

Yes! Heavy rain and other water sources that oversaturate the soil around your septic tank can cause your tank to flood. This can be a serious and delicate issue, so be sure to contact a septic tank professional when your system is flooded. In simple terms, septic tanks have three primary units.

Why do my drains smell after heavy rain?

A sewer smell in the house after rain and sewer air from drains in general comes from the anaerobic decomposition of organic substances. The dirty odours are partially stopped by a water trap in the siphon within the drains. However, when it rains heavily, the air pressure in the sewer changes quite a bit.

Why does my septic smell like rotten eggs?

Sewer gas. Every type of septic system or sanitary sewer system produces sewer gas. Properly working systems vent the sewer gas away from households and businesses. But, when things are not in pristine working conditions, the gas begins to leak into your home, causing the dreaded rotten egg smell.

Why does sewer smell come and go?

One of the most common causes of sewage smells is a clogged drain. When your home’s wastewater has nowhere to go, the odors will come back up the drain they should be going down.

What are the signs that your septic system is failing?

The first signs of a failing septic system may include slow draining toilets and sinks, gurgling noises within the plumbing, sewage odors inside, continuing drainage backups, or bacteria in the well water.

Can you pump a septic tank in the rain?

Maintaining the septic system AFTER the heavy rains Do not attempt to have the septic tank pumped before the floods rescind. Pumping the tank in the midst of floods could make the tank float out of the ground and cause serious damage to the entire system.

How do I know when my septic tank is bad?

8 Signs of Septic System Failure

  1. Septic System Backup.
  2. Slow Drains.
  3. Gurgling Sounds.
  4. Pool of Water or Dampness Near Drainfield.
  5. Nasty Odors.
  6. Unusual, Bright Green Grass Above Drainfield.
  7. Blooms of Algae in Nearby Water.
  8. High Levels of Coliform in Water Well.

How do I get rid of sewer smell outside?

While you can’t stop the creation of septic and sewer gases, you can eliminate the odor that is caused as they exit the roof vent pipe or septic tank vent by installing a Wolverine Brand® carbon filter on top of your sewer vent.

Why does my outside smell like sewer?

A sewer smell outside your house can mean that the city sewer is backed up. But if the smell is constantly present it can have to do with your roof leader line outlets, or area drains. Just like all plumbing fixtures roof leader lines and area drains are supposed to have a trap to provide a water barrier.

Why Septic Tanks Smell When It Rains

1) When it rains, your septic tank stinks because the air is thick and does not enable the methane emissions to escape through the venting system. Because of the air pressure, it tends to linger low to the ground and has a rotten egg smell, which is not uncommon. Following aseptic pumping, there will be a stench similar to rotten eggs, also known as methane gas, which will disappear in about a half-hour. In addition, if the septic system smells like rotten eggs in the bathroom, it might be due to an aloose toilet gas ring around the toilet.

If the scent persists even when it is not raining, the wax rings should be replaced.

The Septic System Smells in Your Home

When it rains, the ground becomes saturated, which causes the leaching operation in your leach field to be slowed down. As a result, the liquid level in the tank rises in the tank. Due to the rise in pressure, the gases in the tank experience increased backpressure, which in turn momentarily increases the amount of gas present in the drain, waste, and vent systems throughout your home. What we’ve discovered is that any property with more than one bathroom may experience this unwelcome odor from time to time, which we believe is common.

Consequently, the water in those traps has evaporated, leaving the drain lines accessible to the outside of the home.

How to Get Rid of the Septic Smell in Your Home

Water in all of your sinks, baths, showers, and drains should be run at least once every couple of months, according to the easy DIY remedy we propose to our consumers. This ensures that the water level in the traps is maintained at an appropriate level. It is recommended that you fill each drain with a few quarts of water or use an anti-clog liquid system (CCLS) in the event that you have floor drains in your cellar.

Septic System and Septic Tank Smell Not Going Away?

The evaporation theory isn’t necessarily right in all cases, though. It’s possible that something more dark and complicated is at work. However, until a septic professional can come in and check your surroundings, it is quite impossible to determine the extent of the problem. We recommend that you contact a reputable septic service provider to get your system inspected as soon as possible. Furthermore, we recommend that you get your septic tank serviced on a regular basis to keep it running smoothly.

Contact us now to learn more about our services, inspections, and maintenance in Bridgewater, West Bridgewater, Taunton, Dighton, Mattapoisett, Raynham, Berkley, and Freetown, MA, as well as the rest of Southeastern Massachusetts and Rhode Island.

Signs of Septic Problems

Maintaining a healthy septic system may reduce the likelihood of septic backups as well as the presence of bad odors. When you notice a foul odor emanating from your septic tank, this is often one of the first symptoms that there is a problem with your septic system. What’s worse is that when there is a lot of rain, it might cause some of the components in your system to fail, allowing the stench to become much worse.

It is important to contact an experienced septic system provider when your septic system emits an unpleasant odor merely as a result of a change in weather, particularly after there has been significant rain. They will examine and conduct maintenance on your septic tank or leach field.

Why do septic tanks smell when it rains?

When it rains, the air gets thick, making it difficult for methane emissions to be released properly through your ventilation system. As a result, the gases remain close to the ground due to the pressure of the surrounding atmosphere, resulting in a terrible stench. Because of the additional pressure created by the rain, if you have a loose toilet gas ring someplace in your home, the gases can be forced through and into your home, resulting in an unpleasant odor. Even the slightest crack or hole can allow methane gas to seep through.

Can a septic drain field flood from too much rain?

When you get significant rainfall, the earth becomes saturated, which has an influence on your drain field and other drainage systems. A flooded drain field can cause a variety of issues for your septic system, including clogging. Because of the heavy rains, the liquid level in your septic tank rises, resulting in increased back-pressure on gases in the tank. The only place for these gases to travel is down the sink, through the vent, and into the waste system in your home. The outcome is a bad odor, which is created by a flooded drainage system.

How do I get rid of septic tank smells?

Septic smells are frequently generated by gases that build up in the system. There are a variety of things you may do to avoid or eradicate a foul odor coming from your septic tank or toilet.

  1. Drains should be flushed with water on a regular basis. When it rains, households with more than one bathroom are more likely to have septic odours since one of the restrooms is used less frequently. You may avoid this type of problem by running water through all of your sinks, showers, toilets, and drains every couple of months
  2. However, this is not recommended. Pumping out a septic systemTank Clear the decks
  3. Request the services of a specialist to conduct a soil and percolation test in the leach field

Septic Medic is based in Dingmans Ferry, Pennsylvania, and serves Delaware Township and the surrounding regions of Pike County, Pennsylvania. Dealing with a foul-smelling septic tank or drain field as soon as possible is critical in order to avoid costly damages.

Septic Emergency? Contact us immediately at570-828-7444

The following are examples of additional septic services:

  • Responding to septic system alarms and emergencies
  • Installing septic systems
  • Clearing clogged drains or preventing system backups
  • Tank repair and replacement

Why Does My Septic Tank Smell When It Rains – Greenville Sewer Septic

You may notice an unpleasant stench coming from your septic tank when it rains if you have one. This stench is typically compared to the scent of rotting eggs, which is not something you’ll want to be exposed to on a regular basis if at all possible. This article will provide you with some information on why your septic tank stinks when it rains and what you can do about it.

Why It Smells

Methane gas is present in your septic tank, and it has a pungent stench that is difficult to ignore. Rain causes the air to become heavier, which prevents methane gas from rising to the surface and exiting via the septic tank’s vent. This causes the methane to stay close to the earth, resulting in the all-too familiar rotten egg odor. Check around your toilet for a gas ring that has come free, if you are finding this stench concentrated inside your bathroom. It just takes a little hole in the ring for methane gas from your septic tank to get into your bathroom and cause damage.

Other Reasons for Odor

It is extremely important to keep the ground moist when it rains. In your leach field, this will have the effect of slowing down the naturally occurring leaching that occurs. A rise in the liquid level of your septic tank creates back pressure on the gases that are trapped inside the tank. Consequently, there will be greater quantities of methane gas in your home’s drainage, waste disposal, and even vent system as a result of this.

One other possible explanation is that the substance contained within your tank is not being broken down adequately. This results in a backfill of garbage, and when it rains, the pressure pushes the odor to the surface of the ground.

How to Fix Septic Tank Smells

Fortunately, there are several things you can do to get rid of the foul odor originating from your septic tank, regardless of whether it is pouring or snowing outside. The first step is to immediately add a specific treatment to the tank that contains unique enzymes. These enzymes will aid in the decomposition of waste within the aquarium. Run the water in all of your sinks, showers, and tubs at the same time every few months to clean them. This will guarantee that the level of water inside the traps of your tank remains consistent and at an appropriate level.

They will be able to do a full check and establish the source of the problem, along with recommendations for how to solve it.

Our phone number is 864-385-3933, and you may reach us and arrange an appointment with us right now.

Why Does My Home Smell Like a Sewer After It Rains?

Being able to live in Santa Rosa without having to deal with snow is one of the many things we appreciate about living here. In fact, when compared to the rest of the country, California’s winters are very mild. There is still a winter in Santa Rosa and Sonoma County, despite this. Our winters are often characterized by heavy rainfall, with an average of 38 inches per year. Unfortunately, for some homeowners, their home begins to smell like a sewer after a heavy downpour of rainfall. In the event that this occurs to you, don’t be concerned; there are steps you can do and reasons why your home smells like a sewer when it rains.

First, Blame Bacteria

Your plumbing system was designed to function as a waste disposal system. Specifically, when we speak of waste in this context, we are referring to both human and organic waste. The vast majority of organic waste originates from things that are thrown down the drain, such as food scraps and coffee grounds. When a large amount of water is put down the sink and there is a backup, an unpleasant odor might emerge. If you notice a stench, have it repaired right once because this scent might be harmful.

It is the location where all of your wastewater is stored.

Over time, the u-trap might get clogged, resulting in a foul stench emanating from your property when it rains, which is caused by sewage gas.

See also:  What Should You Put In Your Septic Tank? (Correct answer)

Don’t Disregard the Septic Tank

Is your house built on a septic tank system? This might explain why your home smells like sewage after a wet day, in which case you should call a professional. If you live on a septic tank and notice sewage odors in your house, there is a good chance that your septic tank is the source of the problem. Septic tanks become old and worn out over time, and they begin to collapse as a result. In order for rainfall to absorb itself into the earth, it must find the lowest position possible, which is typically at the bottom of your septic tank.

The rains will drive out a sewage stench via the pipes and occasionally even into your garden if your septic tank is failing to function properly. If you have any reason to believe this is the case, contact a professional plumber immediately.

Your Water Barrier or P-Trap is Dried Out

Every one of your plumbing fittings is equipped with a p-trap, which is also known as a water barrier in certain circles. Do you have any plumbing equipment in your home, such as a shower or a sink, that aren’t used very often? The presence of sewage after heavy rains may indicate the presence of sewage. It is possible for the p-trap to become clogged when a plumbing appliance or fixture in your house is not frequently used. In the event that you have a sink or shower in your home that does not get used very often.

The flow will rewet the water barrier and aid in the removal of the sewage stench from the area.

Cracked Pipes and Clogged Drains

After a rainstorm, damaged pipes and clogged drains are two of the most prevalent causes of sewage smells in the house; however, other factors can play a role. It is normal for tree roots to produce cracks or breaks in pipes in yards where there are many trees. Tree roots, on the other hand, can cause cracks in your septic tank. A blocked drain is one that has been backed up due to the accumulation of biological material, which includes food scraps, hair, and cleaning agents. Whenever your sink becomes blocked, the pressure from the rain may drive the odor of everything that has become trapped in the blockage to waft throughout your home.

Does Your Home Smell Like a Sewer After it Rains? Call Us.

When you wake up in the morning and your house smells like sewage, there’s nothing worse. As a result, at Moore Home Services, we only use plumbers who are experts in their field. We are confident in saying that our plumbers have seen it everything. If you live in Santa Rosa, Sonoma, or the North Bay, call or email us immediately to book an appointment. Call the number at the top of the screen to schedule an appointment, or click here to book an appointment online.

Why Does my Septic Smell When it Rains?

Hydrogen sulfide is the source of the foul odor you’re smelling. Your septic system produces hydrogen sulphide, along with other gases such as methane and carbon dioxide, as a by-product of the waste digestion process that takes place. This is completely natural. The gases created by your septic system escape swiftly via the system’s vents when it is not raining and are dispersed by the wind without you being able to detect the presence of the gases.

Why it happens when it rains

Rain is typically accompanied by low air pressure, which has an influence on the way gases exit from your system. The air becomes less dense when it rains or when there is a drop in air pressure, which means that gases do not ascend as easily and instead remain closer to the surface of the earth. As they remain in the air, you’re more likely to detect the more potent scent. The scent that is emanating from within your home might be the result of a problem with your plumbing system. It is possible that the seals surrounding your plumbing are loose or cracked, allowing sewage gases to seep into your home.

What you can do

If the scent is only detectable outside your house when it rains and is only heavier when it rains, you may not need to do anything because this is quite natural. However, you may want to have a wastewater professional come in to make sure everything is in working order. As soon as you discover the scent within your house, you should call a plumber to have your indoor plumbing checked. If you notice a persistent odor emanating from your septic system even when it is not raining, it is likely that there is a problem with the biological operation of your system.

  1. Please get in contact with us if you would like to learn more about how we can ensure that your system returns to optimal functionality.
  2. We have been using the product in our septic system for more than 15 years.
  3. Gerry Kelly is a well-known Irish actor.
  4. As a result of being assured that it was really healthful, we have been using it for 11 years and have only pumped it once.
  5. EcoCare is used on both of our septic systems, which are both in good working order.
  6. This is a fantastic product.

Provides the solution that we desire in a timely and straightforward manner. There is no mess, no trouble, and no smell; in fact, the odour from our grease trap is completely eliminated. It has been a decade or more since our system has been pumped. Larry Greetham is a well-known actor.

Why Does My Septic Tank Smell When It Rains?

Have you ever returned home to a house that smelled like rotten eggs on a rainy day? It’s possible that the problem is with your septic tank. How come, though, does it smell so terrible – particularly when it rains? There are a couple of options available. There might be a fracture in the pipe or another portion of the sewer system causing the stench to come via the vents or plumbing system, or a loose sewer trap plug could be the source of the smell. It is important to disregard the situation in any case!

We offer free quotes and provide a variety of services, including septic tank pumping, system maintenance, and more.

  • Heavy air prevents methane gases from escaping via the vents when the air is dense and densely packed. Because of atmospheric pressure, the air remains close to the ground, giving it a rotten egg stench. After a septic tank has been drained, the methane gas might have a rotten egg smell to it. In most cases, it diminishes after an hour. A wax ring that is loose or has a hole in it emits methane gas, which causes the rotten egg stench to emanate from the restroom. Sewer trap plugs that are either missing or not properly installed catch water at the bottom of the trap, enabling gas to escape and cause an odor to develop. This blockage in the sewage access pit may be found and replaced by a plumber, which will eradicate the stink. One of the contributing factors to the foul septic tank stench is a dried-out water barrier in the sewer trap. When a fixture isn’t utilized on a regular basis, it begins to dry out. Using some water from the fixture to help reestablish the water barrier and eradicate the scent is a good idea.

Before contacting a professional, there are a few do-it-yourself alternatives to examine first. Every few months, you should run water through all of your sinks, bathrooms, showers, and drains to verify that there is a sufficient amount of water in the traps and drains. If you have a basement with floor drains, you may also pour two quarts of water into each drain or use a CCLS tank treatment to clean the drains. Septic tank problems should be handled as soon as they arise, and expert assistance is highly suggested in this regard.

Why Does My House Smell Like Sewer When It Rains

Who doesn’t enjoy a nice downpour, am I right? Rain is both appreciated and required in the majority of the country’s regions. The rain purifies the air around us and contributes to the preservation of the environment’s natural beauty. Rain, on the other hand, might cause issues with your home. The roof is one of the first things that homeowners are concerned about. Does the roof appear to be completely covered with shingles, or does there appear to be a leak around the flashings? What most people don’t consider is how rain might have an impact on the plumbing in their residences.

It’s not nice, and you’ll want to call a plumber to come out and take a look at the situation as soon as possible.

There are certain concerns that are evident, such as blocked outdoor drainage systems.

When it rains, you will notice that those outside drains become puddles, which can eventually transform into little ponds in your yard.

In any case, if you discover that your drains are not functioning correctly, you should call a plumber to come out and clean the debris. Flooding is one of the most common causes of property damage in the United States.

Sewer Gas

The first step is to have a grasp of what sewer gas actually is. Sewer gas is a type of gas that comes from your sewage system and is formed as a result of waste combining with other home goods that are flushed down the drain. The gas itself can be either non-toxic or harmful depending on its composition. This combination, which contains sulfur dioxide, ammonia, hydrogen sulfide, and other gases, has the potential to emit some really foul odors. When your home smells like sewage during a rainfall or immediately after a thunderstorm, it is a clue that you have a plumbing problem on your hands.

Faulty Water Trap/ P-Trap

When someone talks about a P-trap or a water trap, they are both referring to the same thing. In your house, a P-trap is an important component of plumbing because it prevents sewage gas from seeping into your home. A P-trap should be installed in any section of your home where there is a drain of any kind. This would include drains from toilets, sinks, and washers and dryers. When the P-trap fails or breaks, it is frequently the root cause of sewage odors in your house, according to experts.

There are several excellent videos available on the internet that will guide you in the proper route.

Plumbers provide free estimates in the vast majority of places across the country.

Septic Systems

Septic tanks and septic systems can survive for a long period, but they will not last indefinitely. Septic tanks can fail for a variety of reasons, including improper maintenance by homeowners and tree roots causing difficulties. When a pipe bursts, it is one of the most prevalent problems that can occur. It is natural for rainwater to seek the lowest spot, and if you have a gap in your sewage line, your septic tank may begin to fill up with rainwater. If you have a cracked or broken pipe, the sewer gas will rise as the septic tank fills with rainwater.

Due to the fact that the scent may readily migrate to your neighbor’s yard, this can be an uncomfortable and humiliating situation.

Wax Ring

When you have a toilet, the wax ring at the base of the toilet serves to maintain a tight seal between the toilet and drain pipe. When a seal is damaged, it might result in a toilet that leaks and has an unpleasant odor. Sewer gas can flow up through your sewer pipes and, if the wax ring around the pipe is damaged, it can escape into your home, causing an unpleasant odor. How to Correct: If your wax ring becomes damaged, it will need to be changed immediately. This necessitates the draining and removal of the toilet in order to have access to the ring.

Often, the old worn out wax ring is in poor condition and must be scraped off the toilet flange to be replaced. Using cleanser or vinegar, clean the area surrounding the toilet flange before installing a new wax ring to ensure that it is free of debris.

Floor Drains

Floor drains are more frequent in business structures, although they can also be found in certain residential homes. A floor drain is usually found in a bathroom or kitchen, although it may be found elsewhere. A P-trap is found on a floor drain that has been correctly fitted. It is possible for sewage gas to flow through this P-trap, resulting in an unpleasant odor. P-traps are covered in detail in our “How to Fix” section, which can be found a couple of paragraphs above.

Final Thoughts

However, although floor drains are more frequent in commercial structures, they can also be found in certain residential buildings. A floor drain is usually located in a bathroom or kitchen, however it can also be found elsewhere. Typically, a P-trap is found on a floor drain that has been correctly fitted. Septic gas can seep through this P-trap, causing a foul stench to emanate from the sewage system. P-traps are covered in detail in our “How to Fix” section, which can be found a few paragraphs above.

septic gas smell in house – Forum

Drafthorsegirl11:55 a.m., January 6, 2005Member since: January 5, 2005Member with a total of 151 lifetime posts Help! We purchased an ancient farmhouse with a septic system that was installed in the 1970s. We have a leach field, often known as a drain field. In any case, every time it rains, we have a foul sewage stench that permeates the entire residence. I don’t believe it is due to a problem with the drain or toilet vents because we wouldn’t smell it all of the time if that were the case. It only happens when it rains heavily.

  1. Is there anyone out there that knows what is going on?
  2. thanks!
  3. 01/06/05Member Since: 09/06/045 lifetime postsMember Since: 09/06/045 lifetime posts As a result, I discovered that there is a five-foot-long pipe coming out of my septic tank and leading to the drain field, which I had not previously discovered.
  4. This might explain why you only smell it when it rains, because the drain field is unable to manage the volume of water that falls on it.
  5. Once you’ve located the tube that links the septic tank to the drain field, you may disconnect it and dispose of it.
  6. Your drain field is in good condition if you put water through it for about ten minutes and nothing comes back up.
  7. I would go there first before doing something that would need a significant financial investment.
See also:  How To Find Your Septic Tank Through County Records?

LonnythePlumber 04:44 p.m.

In Wichita, a house blew up in the summer of this year due to an improperly functioning septic system.

Open a few windows to allow for some fresh air circulation while keeping the heat on.

It is made worse by surface water that seeps into the lines, filling them and the tank with water and preventing the free flow of air through them.

Their issue is that they have a tendency to suck all of the water out of the trap at times, allowing the sewage smell to enter.

Also, attempt to figure out which fixtures have vents and which ones are enabling odors to escape via them.


For more than a month, we’ve gotten a lot of rain.

Is it possible that my tanks are simply overflowing and that everything will return to normal once the weather clears?

The systems have been in operation in South Carolina for 18 years, in soil with modest clay content.


When the toilet below is flushed, the sewage scent rises through the kitchen sink in the upper apartment.

When we flush the downstairs toilet, we hear a gurgling sound in the upstairs sink, which tells us that the toilet isn’t ventilated properly, right?

Due to the fact that my mother is now residing below, we are more aware of the stench, which is exacerbated by rain.

We had our septic tank pumped, and the septic tank technician informed us that the tank looked to be performing its function well.

The fact that we have this scent while spending all of this money on a kitchen redesign definitely “stinks,” especially because we are in the process of redoing our kitchen.

Venting the downstairs toilet will involve cutting a hole through the basement wall, which is underground, so I don’t expect this to be a “simple” remedy!


BV01179503:17PM Using a funnel, pour water down the drain where the stench is coming from.

Eventually, the water in the cup of the float/ball evaporates, and the float opens up the line, allowing you to smell sewage gas.

Maintain the water level in it, and the float/ball will prevent gas from entering the pipe. This happens a lot when it rains or when I have the air conditioner set to the highest setting and evaporation takes hold.

Post a reply asAnonymous

It has little to do with the amount of rain that falls, but rather with the atmospheric conditions that exist when rain falls. Anaerobic bacteria are responsible for the breakdown of waste in septic tanks. Their activities release foul-smelling pollutants into the atmosphere. It is normal for gaseous waste to make its way up the main drainage line to the venting system and out the roof. These gases are carried away unobserved by the normal circumstances of the atmosphere. When particular circumstances are met, the air above the roof holding the foul odor is heavier than the surrounding air, resulting in the bad smell being trapped.

  1. There isn’t much you can do to change the situation.
  2. The house trap would prevent aromas from escaping through the roof; instead, all odors would be expelled through the house trap’s vent.
  3. Depending on where the tank is located, you may be able to directly vent the tank.
  4. Tank venting is mandatory in certain areas, and in others it is only recommended.
  5. Septic tanks have a foul odor.

How to Reduce Septic Tank Odor

Septic tanks that are properly maintained should be odor-free, therefore if you notice an unpleasant smell inside your house or outdoors near the leach field, this is a clue that there is a problem. A bad odor, on the other hand, does not always indicate that the septic tank needs to be flushed. Several gases, including carbon dioxide, hydrogen sulfide, and methane, accumulate in the septic system and generate smells. Not only may they be irritating, but a high enough concentration of these gases can be poisonous or even explosive if present in sufficient quantities.

Septic Odors Inside the Home

Septic tanks that are properly maintained should be odor-free, so if you notice an unpleasant smell inside your house or outdoors near the leach field, this is a clue that there’s a problem. Septic tank pumping isn’t always necessary when there’s an unpleasant smell coming from the drain field. Carbon dioxide, hydrogen sulfide, and methane are among the gases that can create septic smells in the system.

It is not only possible for these gases to be irritating, but also poisonous or even explosive at high concentrations. For septic tank odor, these are some of the most prevalent causes and solutions:

  • If you notice a terrible smell inside your home or outdoors near the leach field, it’s a clue that there’s a problem with your septic tank. A bad odor, on the other hand, does not always indicate that the septic tank needs to be flushed. Several gases, including carbon dioxide, hydrogen sulfide, and methane, accumulate in the septic system, causing foul odors. Not only may they be unpleasant, but a high enough concentration of these gases can be hazardous or even explosive if present in sufficient quantities. For septic tank odor, here are some of the most prevalent reasons and treatments to consider.

Odor Near the Septic Tank Outside the Home

It’s usual to notice a faint odor near the septic tank every now and again, but a strong odor might indicate a leak from the manhole.

  • The presence of a mild scent near the septic tank is typical, but a strong smell might indicate that a leak from the manhole has occurred.

Leach Field Odors

It is necessary to have a soil treatment area, also known as a leach field, in order to properly treat sewage. There should not be a strong sulfur smell in the soil treatment area unless there is an issue.

  • There should not be a significant septic odor unless there is an issue with the soil treatment area (leach field), which consists of an in-ground drain bed, field, or mound.

Odor in Other Areas Outside your Home

There should not be a significant septic odor unless there is an issue with the soil treatment area (leach field), which is comprised of an in-ground drain bed, field, or mound.

  • If your property is situated in a low-lying location, a valley, or is bordered by a dense forest, it is possible that there will be insufficient breeze to disperse the scents away from your outdoor living space. Having a plumber expand the plumbing vent pipe might assist in improved odor diffusion due to the wind. Install a carbon filter at the top of the plumbing vent to help decrease the smell of septic waste. The filters will need to be replaced about every 1–5 years in order to maintain their optimal efficacy.

Odors Caused by Improper Tank Chemistry

Throughout the septic tank, bacteria are hard at work breaking down waste materials. The pH level must be kept between 6.8 and 7.6 in order for these bacteria to thrive and perform their functions. If the solution becomes too acidic, a strong hydrogen sulfide gas odor (similar to that of rotten eggs) might begin to emerge.

  • Never flush non-organic waste down the toilet, such as cigarette butts, feminine hygiene products, or trash
  • Instead, use the garbage disposal. Pouring fats, oils, coffee grinds, cleaning products, paints, or other chemicals down your sink or tub drains is not recommended. – These can interfere with the breakdown of sewage inside the tank, resulting in a bad odor. It is recommended that you add a cup of baking soda to a sink drain or toilet once a week to assist maintain the proper pH level in the septic tank

A professional plumbing business, such as Bailey Brothers, should clean out your septic tank every three to five years to maintain it odor-free and functioning correctly.

Sewer Smell in House After Rain. How Come?

The stench of sewage in your home after a period of heavy rain is really unpleasant. After a severe downpour, the well-known sewage odor, which smells like rotten eggs, might become more noticeable. Other odors may also be present, however the stench of rotting eggs is the most prevalent of them. This odor is caused by H2S (hydrogen sulphide), which is not only offensive to the senses but also harmful to one’s health. Drainpure, on the other hand, can be a solution!

Sewer smell in the house after rain, why is that?

The anaerobic breakdown of organic compounds is responsible for the sewage smell in the house after a rainstorm and the sewer air from drains in general. These are, without a doubt, abundantly prevalent in the wastewater system. Anaerobic decomposition is defined as decomposition that occurs without the presence of oxygen. The dirt particles in the water are degraded and deposited on the drain walls as a result of this process. In the course of this process, degradation by-products are emitted, one of which is the well-known rotten egg smell, which is generated by H2S as well as other gases.

When it rains severely, on the other hand, the air pressure in the sewer varies fairly radically.

The water lock will then be restored as soon as the drain is utilized again once this has taken place.

Is there a solution against sewer air in the house after rain?

Yes, Drainpure may be used to keep sewer air from entering the house after a rainstorm. After a rainstorm, this will considerably limit the sewer air that enters the house. Drainpure coats the interior of the drain pipes with a coating that totally covers and dissolves the filth particles that have accumulated there over time. As a consequence, after a few hours, the amount of polluted air will be significantly decreased. Drainpure will organically break down the layer that has accumulated against the walls of the pipes if the product is used for an extended period of time (maintenance dose).

With repeated usage, the areas of the drainpipe that are exposed after the water lock in the siphon will be thoroughly cleaned. After a rainstorm, the sewage air in the house will be almost non-existent. Drainpure is a product that works quickly in this situation.

  • Yes, Drainpure may be used to keep sewer air from entering the house after a rainstorm. In the event of a storm, this will dramatically minimize sewer air in the house. A thin coating of Drainpure is applied to the inside of the drain pipes, thoroughly covering and dissolving the dirt particles that have accumulated inside the pipes. It will take only a few hours for the noxious air to be significantly decreased. As a result of extended application (maintenance dose), Drainpure will organically break away the layer of debris that has been accumulated against the pipes’ walls. With repeated use, the areas of the drainpipe that are exposed after the water lock in the siphon will become clean. Immediately following a rainstorm, the sewage air in the house will be practically non-existent. Drainpure is a solution that is effective quickly in this situation.

Septic tank smell and bad odors- diagnosis and cure

The owner of a septic system will occasionally be confronted with foul odors. Most of the time, these scents are caused by gases that are produced as a byproduct of the activities that take place in a septic tank, notably the digestion of organic waste by anaerobic bacteria. Gases such as carbon dioxide, hydrogen sulfide (which creates a stench similar to that of rotten eggs), and methane are among those being emitted. Not only are these gases poisonous and unpleasant, but they also have the potential to be explosive.

The cause of the explosions is believed to be methane accumulation.

Learn how to get rid of septic tank odor in the sections below!

  • Close to the septic tank, in the yard, or near a drainfield are all possible locations.

What causes septic odor inside the house?

The presence of septic tank odors inside the home can pose a serious health risk. If the foul smell emanating from your septic system makes its way into your home, it could indicate that you have a plumbing problem. It is possible that the drying out of a trap in your basement floor drain will result in the gases from your septic tank venting back into your home. Septic odors in the home could also be caused by a cover on the ejector sump pump basket in the basement that has not been properly installed and sealed.

If this vent were not present, the sinks, toilets, and tubs would gurgle, the traps would dry, and the odors would seep into the home.

Plumbing vents can become frozen if exposed to extreme cold for an extended period of time, and they can also become clogged with leaves and other debris.

Remedies for septic tank odors in the home

  • Water should be poured into the floor drain traps on a regular basis. If the water levels are normal, but the stink persists, have your plumber inspect your cleanout access plug to make sure it is not damaged or corroded by the water. Cleaning out a clogged cleanout access plug can also cause gases to leak into your home, so replacing it will remedy the problem. On a warm day, frozen pipes will immediately thaw and become operational. A jetter or warm water can also be used to unfreeze the pipes if they have frozen. It is necessary to check whether or not the lid on the ejector sump pump basket is correctly sealed. If necessary, replace the seal with a new one.

What causes septic odor near the septic tank?

Some of the variables that may lead to septic tank odors surrounding the tank include inadequate digestion in the tank, a septic tank that is overflowing and in need of pumping, and unsecured septic tank covers that are allowing sewage odor to escape. Sulfate-reducing bacteria, especially hydrogen sulfide-producing bacteria, are also connected with septic smells. Sulfate-reducing bacteria are found in abundance in the majority of septic tanks. It is believed that these bacteria gain energy by oxidizing organic substances, which they perform as part of the process by which they convert sulfate to hydrogen sulfide, hence their name, sulfate-reducing bacteria.

As the anaerobic bacteria decompose the organic waste, carbon dioxide, hydrogen sulfide, and methane gases are discharged into the environment.

However, we rarely notice the presence of these gases since they are kept firmly contained within the septic tank.

Septic system failure may result if the drainfield becomes clogged, which may result in the release of septic smells as a result of the failure.

The most reliable method of dealing with this is to use biological additives, which contain a buffer that can aid in the digestion of organic waste.

Remedies for septic odors near the septic tank

  • Make certain that the risers and manholes are properly covered. If you have older plastic lids, you may want to consider replacing them with modern plastic lids with rubber seals, which are designed to prevent septic stench from leaving the tank. The use of weather stripping to create a temporary seal that can assist to keep septic tank odors contained is useful if you have a concrete lid that is letting in airborne contaminants or aromas. This seal will need to be changed following the maintenance procedure. Regularly pumping your tank will help to ensure that it does not become overfilled.
See also:  What Cleaners To Use On Toilet With Septic Tank? (Solved)

What causes septic tank smells in the yard?

It is common for septic tank scents to be detected in the yard to indicate that your plumbing vent is not doing a good job of diffusing the aromas properly. Homeowners who live in wooded areas or valleys are particularly vulnerable to this problem. As the wind blows across the roof of the house, air currents that should normally transport these scents away from the house may instead convey them down into the backyard. The overflowing of a failing septic system might result in foul aromas emanating from the yard as well.

Remedies for a smelly septic tank in the yard

  • Extending the plumbing vent in your yard if your property is located in a valley or a forested region may be beneficial in dealing with sewage odours in the yard. By placing carbon filters on top of the ventilation system, it is possible to aid in the absorption of unpleasant odors. For optimal performance, these filters should be replaced on a yearly basis. If you do decide to use a filter, make certain that it does not hinder the passage of air in any way.

What causes septic odors near the drainfield

Septic tanks and drainfield areas that have a strong odor indicate that they are deteriorating, or have already failed, and need to be replaced. Many factors might cause a septic tank to fail, but one of the most prevalent is the usage of toxic goods. Many common home goods that are flushed down the toilet and down the sink drain contain poisonous compounds that substantially diminish the bacteria population in the septic tank’s drains and toilets. This implies that the organic waste will be driven into the drainfield before it has had a chance to break down correctly in the septic tank, which is what causes the majority of drain fields to fail.

Remedies for septic odors near the drainfield

  • The majority of failing drain fields may generally be repaired using shock treatment. Biological additives, which are derived from enzymes and bacteria and are thus safe to use in the septic system, are introduced. Despite the fact that the biological treatment is effective in the vast majority of cases, a mechanical solution may be necessary in some rare circumstances, such as when the septic tank has been physically damaged. It will be necessary to engage a qualified and officially licensed contractor in order to determine whether or not you need to repair or replace the septic tank in this situation.

Why does my new septic system smell?

Septic tanks emit a foul odor in all cases. Plumbing vents are frequently installed to assist in the elimination of unpleasant scents. The vent also aids in the prevention of the accumulation of gases such as methane, which might otherwise result in explosions if not addressed. A good septic tank should only be noticeable while passing through the roof, and it should dissipate with the wind or the changing weather conditions in an ideal situation. It is possible that the bacteria in the septic systems is insufficient.

  • The following are some of the reasons why a new septic system may smell when it is first installed: Extremely high pH levels – the microorganisms that live in the septic tank require a pH between 6.8 and 7.6 to function properly.
  • In spite of the fact that a tank may not be ready for cleaning for years, some septic system owners might find themselves with a completely filled tank quite rapidly as a result of improper usage and upkeep.
  • Cold weather– In addition to causing foul odors in the septic system, cold weather may cause it to malfunction.
  • It is also possible that snow will obstruct the vent stack, causing the septic gases to back up into the home.

The fact that wind velocity are often lower in colder weather explains why scents are more prevalent in colder weather as opposed to warmer weather.

Are septic fumes harmful?

Your septic tank emits a large number of gaseous substances that are not only unpleasant to breathe, but are also potentially harmful to your health. Hydrogen sulfide, methane, ammonia, and carbon dioxide are only a few of the gases that are produced. Industrial solvents, in addition to septic gases, can get airborne and create a variety of health problems in some people. However, because these gases are only toxic in extremely high quantities, you should be alright as long as you do not go into the septic tank and avoid breathing them in.

Problems caused by septic fumes

  • When present in large amounts, hydrogen sulfide, ammonia, methane, and carbon dioxide can be extremely poisonous. The mixture of methane and carbon dioxide has the potential to deplete the atmosphere of oxygen, which is one of the reasons why you should never enter a septic tank
  • Nonetheless, The inhalation of significant quantities of methane can result in asphyxiation, which in turn can result in tissue damage. Sulfide gas has a rotten egg stench to it, and as a result, it is the most irritating and disagreeable of the septic gases. Eye damage might occur if you are exposed to significant amounts of the substance. In severe situations, it might result in respiratory depression, which is a life-threatening illness.

Problems caused by industrial toxic fumes

The use of flame retardants, solvents, cleaning products, insecticides, and volatile organic compounds, among other things, might result in the production of harmful gases. For example, the fumes released by bleach can irritate the respiratory system and cause it to malfunction. Surfactants, which are often found in cosmetics and detergents, have the potential to become airborne and cause irritation of the mucosal membrane.

Why does my septic tank smell in winter?

In spite of the fact that the presence of foul odors in a septic tank is typical, the foul smell should either remain in the tank or be expelled by the vent stack on the roof. Unfortunately, the cold months frequently obstruct this procedure. Here are a few examples of how cold weather might contribute to septic smells.

Vent stack

An external vent stack is often built to assist in the venting of sewage smells and gases to the outside of the building. Furthermore, by producing an air supply in the pipes, the vent assists in ensuring that the drains drain correctly. It is possible that snow or ice will accumulate on the vent throughout the winter, causing the septic gases to back up into the home. As the septic gases escape, water vapor from these gases can condense and freeze, resulting in the formation of ice during the winter months.

If this is a recurring problem every winter, you may want to consider insulating the vent as a precautionary step.

Frozen fields

Drainfieds that are clogged can cause freezing to occur. When it is difficult for water to percolate, it will overstay in the pipes, causing it to freeze in the winter’s frigid temperatures. As a result, you will have sewage backup as well as nasty septic odors in your home at this time. Snow melting over the septic tank indicates that it is unlikely that the septic tank is frozen, and the failure might be caused by a clogged drain field, according to the report. Snow should never be removed from the drainfield or compacted over it because it acts as a natural insulation for the drainfield.

A restarting of the system will most likely resolve the issue if such a scenario occurs.


Septic smells can be carried back into your home by the wind through a window or the air conditioning system.

This is especially true during the winter, when the wind’s velocity are often low due to the low temperatures. Increase the height of the vent by a few inches in order to ameliorate the situation.

How do I stop my septic tank from smelling?

Septic fumes are a normal and anticipated by-product of the anaerobic bacteria’s breakdown of organic waste during the process of decomposition. Although these gases should not be escaping from the septic tank, smelling them in your home or yard is a sign that something is wrong with your sewage system. Start by double-checking your manhole to ensure that the cover is well closed. You should check to see whether your tank is full even if the lid is closed and you may still smell the septic gases.

  • If it has been more than three years since your tank has been pumped, this might be an indication that your tank is either completely full or on the verge of being completely filled.
  • Refer to this page for a free DIY scum and sludge level test that you may do yourself.
  • The majority of septic systems fail as a consequence of homeowners utilizing items that destroy the beneficial bacteria in the system during the installation process.
  • The toxicity of the goods they use has a negative influence on the pH levels of the septic tank, which has a negative impact on the population of bacteria in the tank as a result.
  • You may want to consider using dyer tracer tablets to check the health of your septic tank without having to dig it up.

The fail-proof way to deal with septic odors

Bio-Sol’skeepup solution eliminates foul smells from septic tanks by addressing the underlying problem. To revitalize the bacteria in your septic system if your system is not performing correctly, you may add biological additives to your wastewater treatment system. Due to the fact that bio-sol additives are derived from enzymes and bacteria, they are quite safe to use in your septic system. Introducing biological additives into the septic system will introduce billions of beneficial bacteria into the system.

More significantly, it will aid in the prevention of foul odors emanating from your septic tank.

What’s That Smell? 5 Tell-Tale Signs of Septic Tank Problems

Are you experiencing issues with your plumbing? Has the scent of an outhouse begun to permeate your townhouse? The problem might be related to the septic tank. Remember that you do not want septic issues to worsen.

We guarantee it. So, in order to assist you, we’ve compiled a list of the most typical indicators of septic tank difficulties. If you detect any of these indicators, contact a professional as soon as possible to prevent your lawn from becoming an aseptic geyser.

1. Slow, Gurgling Drains

Drainage troubles are generally the first indicator of a septic tank problem to appear. Slow drains, gurgling pipes, and toilets that do not flush are examples of this. Now, keep in mind that these might also be indicators of other plumbing issues, such as clogged pipes, that require attention. Even if the use of chemicals is not recommended on a regular basis, they must be used to clear clogs as soon as they are discovered. The usage of items on an as-needed basis should have no detrimental impact on your septic tank.

It is possible that all of your drains are having difficulty emptying because your septic tank is full.

2. Septic Backup

Another clue is the presence of water flowing back up from the drain. You should pay particular attention to observe whether it occurs while you are using the washing machine. In the case of sewage backup, this is usually often a dead giveaway that septic difficulties are present. While it is unlikely that you are suffering a sewage backup at this time, it is important to get expert assistance as soon as possible.

3. Septic Odor

Another obvious symptom of septic system difficulties is the smell of sewage. Septic tanks begin to smell bad when they get overflowing with feces and other waste. Have you noticed any strange scents in your home lately? Septic smells have a sulfurous scent to them (think rotten eggs). Check the area surrounding your tank, especially outside, to determine if any rotten egg odors are emanating from the tank. If you know the location of your septic drain field, thoroughly inspect the area around it.

4. Pooling Water

If a septic tank becomes overburdened, it may begin to flow into the drain field and cause flooding. This can also occur if a tank becomes too old and begins to deteriorate over time. You may notice pools of water forming in your drain field as a result of this occurrence, which is normal. If you discover pools of water on your lawn that weren’t there before, it’s possible that you have a sewage leak on your hands. However, it is possible that a pipe has burst. You won’t know unless you phone it in to find out.

5. Grass Growing Fast

This is a more nuanced form of the problem that we just detailed in greater detail. Occasionally, a septic tank will leak, but not in a significant enough quantity to overflow your drain field. When these tiny leaks occur beneath your drain field, your grass benefits from the additional water and fertilizer provided by the leak. After that, you’ll notice that portions of your grass are suddenly lot greener and growing far quicker than the rest of the lawn. If you notice something like this, report it.

Don’t Ignore Septic Tank Problems

Always contact for septic tank repairs as soon as you notice a problem for the protection of your family, your neighbors, and the environment. When it comes to a massive tank full of human excrement, the last thing you want is for the situation to deteriorate.

Don’t overlook any of these warning signals if you notice them. Please, please contact a septic tank service as soon as possible. Now, read on to learn everything you need to know about Terralift.

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