What Length Should Outlet Baffle Be In Septic Tank? (TOP 5 Tips)

The outlet baffle should extend 24 inches into the liquid depth and 12 inches above the liquid level, which is the elevation of the invert of the outlet pipe. This is a total outlet baffle length of 36 inches. You indicated the scum layer was the thickest at the inlet end of the septic tanks you observed.


  • The outlet baffle should extend 24 inches into the liquid depth and 12 inches above the liquid level, which is the elevation of the invert of the outlet pipe. This is a total outlet baffle length of 36 inches. You indicated the scum layer was the thickest at the inlet end of the septic tanks you observed.

Does a septic tank need baffles?

Inlet baffles are needed for proper performance of the septic tank. Raw sewage from the residence is directed by the baffle downward into the middle zone of the septic tank. This means the effluent follows a tortuous path through the tank, which provides the necessary detention time for the larger solids to settle out.

How much lower should the outlet be than the inlet on a septic tank?

Generally speaking, the outlet on a septic tank should be around 4–6″ lower than the inlet, depending on the size of the tank. The tank itself, when set in place, should be as level as possible. The height difference from inlet to outlet is accounted for in the tank’s manufacture.

What do outlet baffles do in a septic system?

The outlet baffle It must be present for your system to function properly. The outlet baffle directs the flow of effluent from the tank to the drainfield; it prevents the scum layer from exiting straight into the outlet pipe and causing drainfield clogs and premature system failure.

How many baffles does a septic tank have?

Every septic tank contains two baffles, one at the inlet and one at the outlet. The goal of both baffles involves routing waste water through the tank, while ensuring that solids remain safely segregated.

Can septic tank baffles be replaced?

If septic tank baffles are lost or damaged (rusted off on a steel tank or broken off on a concrete tank), they can be repaired or replaced. Baffles in a septic tank are provided to keep solids and floating scum and grease inside the tank.

Where is the outlet baffle in septic tank?

Septic baffles are located at the junctions where pipes enter and exit the tank. The one at the inlet pipe is called the inlet baffle, and the one at the outlet is called the outlet baffle.

What is a baffle tee?

Baffle Tees Block Floating Scum And Debris From Flowing Out Of Septic Tanks Into The Outlet Line To Prevent Clogging Drain Fields. Baffle Tees are designed for hi-line end and slip joint end outlet waste connections. Plumbing fittings are made of polypropylene plastic for long lasting durability.

Is the inlet or outlet higher on a septic tank?

Level the septic tank: The septic tank inlet tee is designed to be higher than the septic tank outlet tee. This helps assure that incoming sewage clears the baffle and enters the tank correctly, while outgoing effluent does not carry along floating solids, scum, or grease (which would clog the drainfield).

How do you tell if your septic tank is full?

How to tell your septic tank is full and needs emptying

  1. Pooling water.
  2. Slow drains.
  3. Odours.
  4. An overly healthy lawn.
  5. Sewer backup.
  6. Gurgling Pipes.
  7. Trouble Flushing.

How much does it cost to replace a baffle in a septic tank?

Repairing a baffle costs $300 to $900 on average. You may pay more if it’s tough to access. The baffle helps to prevent buildup in the incoming or outgoing pipes of the tank.


By Admin on November 12, 2020 Your efforts to live as environmentally conscious as possible, as a responsible homeowner, are likely already underway, with practices such as recycling, composting, and purchasing energy-efficient equipment among your list of accomplishments. As a septic tank owner, you want to be sure that anything you put into your tank and septic field is causing the least amount of ground contamination as is reasonably practicable. Fortunately, there are a number of modest improvements you can do immediately to make your septic system even more ecologically friendly than it already is.

Have your septic tank inspected and pumped on a regular basis.

A bigger septic tank with only a couple of people living in your house, for example, will not require pumping as frequently as a smaller septic tank or as a septic tank that must manage the waste products of multiple family members will require.

When in doubt about how often to pump your septic tank, consult with a professional for advice.

  • In addition to locating and repairing any damage, a professional can ensure that the septic field is in good working order and that your septic tank is functional, large enough to handle your family’s waste, and not causing any unwanted pollution in nearby ground water.
  • Avoid flushing non-biodegradable items down the toilet or down the toilet.
  • Items that are not biodegradable are unable to properly decompose in the septic tank and might cause the system to get clogged.
  • In addition to causing issues in your house, septic system backups can damage ground water in the area surrounding your septic field.
  • Towels made of paper Products for feminine hygiene Grease or fats are used in cooking.
  • grinds from a cup of coffee Even if you have a trash disposal, the food scraps that you flush down the drain and bring into your septic system may cause unanticipated harm to your plumbing system.
  • Food scraps can enhance the amounts of nitrogen and phosphorus in the wastewater, which can disturb the natural bacterial balance of the septic tank, among other things.
  • Water conservation should be practiced.
  • Exceedingly large amounts of water use will interfere with the normal flow of wastewater from your home into your septic tank.
  • Limiting the amount of time you spend in the shower and turning off the faucet while brushing your teeth, as well as purchasing a smaller dishwasher and washing machine that use less water, are all simple strategies to reduce water use in your home.

The following are some basic steps you can take to make your septic system more ecologically friendly: save water, maintain your septic system and tank, and recycle wastewater. To get answers to any of your septic tank-related issues, get in touch with the experts at Upstate Septic Tank, LLC.

WAC 246-272C-0220:

(1)Compartments for septic tanks. Septic tanks must be planned and built with a minimum of two compartments in order to be effective. It is possible to meet this specification with a single tank with two compartments or by connecting two single compartment tanks together in sequence. At least one-half but no more than two-thirds of the total needed liquid volume must be accommodated in the first compartment, and the remaining portion of the total required liquid volume must be accommodated in both the first and second compartments.

The following requirements must be met by septic tank inlets: (1) The inlet pipe’s sanitary tee or baffle extends at least eight inches downward below the liquid level; (2) The pipe’s inlet sanitary tee or baffle extends above the liquid surface at least as far as its inlet crown; and (3) The pipe’s invert is at least two inches higher than the pipe’s invert at the tank outlet.

The following requirements must be met by septic tank outlets: For horizontal cylindrical tanks, the outlet sanitary tee or baffle must extend below the liquid level by at least thirty percent, but not more than forty percent, of the liquid depth; and (c) the outlet sanitary tee or baffle must extend below the liquid level by at least twenty-five percent, but not more than thirty-five percent, of the liquid depth.

For ventilation purposes, the outlet tee may be extended into the riser.

In order to accept effluent screening devices or filters, septic tanks must be built and constructed in a manner that allows for their installation.

Chapter 246-272A or 246-272BWAC include specific effluent screen or filter criteria or standards, if any, that must be met.

If the tank has straight vertical sides, the intercompartmental wall fittings must extend below the liquid level at least: I thirty percent, but not more than forty percent, of the liquid depth; or (ii) twenty-five percent, but not more than thirty-five percent, of the liquid depth if the tank is cylindrical with horizontal sides.

I The slot or port must be located at the same depth as the bottom of the outlet tees or baffles; and (ii) the aperture must have a minimum area of twelve square inches and a minimum vertical dimension of three inches in order to comply with the requirements.

In order to prevent solids from moving from one compartment to another, the septic tank must have intercompartmental walls that: (a) prevent solids from moving from one compartment to another except through the intercompartmental wall fittings; and (b) withstand pumping of the adjacent compartment without risking structural damage or functional failure.

There must be sufficient air space volume in the septic tank for scum storage, which must be at least 10% of the total liquid volume of the tank.

(8)The length to breadth ratio of a septic tank.

(b) A septic tank with a liquid capacity greater than three thousand gallons must be at least 1.25 times its length.

For septic tanks with liquid capacities higher than or equal to three thousand gallons, the length of the tank must be at least 1.5 times the breadth. (9)The depth of the liquid capacity of the septic tank. Septic tanks must have a liquid depth of at least three feet to be considered functional.

Expert Tips for Baffle Repair

Receive articles, stories, and videos about repair sent directly to your email! Now is the time to sign up. Repair+ Receive Notifications One perk of working on septic systems for more than 40 years is that the folks I’ve met and worked with are frequently willing to offer images or tales that they find interesting. In this particular instance, my colleague Kim Seipp emailed me a photo of a repair work she had completed in Colorado. Hopefully, everyone who reads this recognizes right away that this is not the appropriate method of repairing or replacing a baffle in a concrete tank.

  1. These baffles must be the right length and have a space between their top and the bottom of the tank lid to allow for the exchange of gases and the ventilation of the tank.
  2. Thus, sewage travels through the tank on an irregular course, providing the detention time necessary for bigger particles to be settled out before the effluent is transferred to the final treatment and dispersion section of the system.
  3. A floating scum blockage is prevented by the intake baffle from clogging the inlet pipe.
  4. It is necessary to maintain floating scum in the tank, which is composed of oil and soap residue, so that it can be removed when the tank is cleaned.
  5. A deteriorating concrete baffle at the exit of a septic tank is seen in this photograph.
  6. Due to the fact that the sanitary tee is connected to the tank’s output pipe by couplings, the person(s) who completed this project had the appropriate concept.
  7. This baffle will not perform the critical job of providing a relatively clear liquid to the next component of the system since there is no effluent filter in place.
  8. The concrete around the pipe may require repair, and a rubber gasket may need to be installed retroactively to guarantee that the tank stays watertight and root-free.
  9. The outlet baffle should be extended to a depth of 25 percent of the operating depth in the tank to ensure proper operation.

As an example, if the tank is 60 inches deep, the baffle would need to be 15 inches longer. I’d be interested in hearing how others might go about mending a baffle in the future. Leave a comment below or send an email to [email protected] with your baffle repair suggestions.

We Have an Answer For This Baffling Question

An example of one service provider’s remedy to a clogged intake is shown in the following image. Scum will still be able to block the intake despite the configuration changes. The image is courtesy of Jeff Burger.

Interested in Septic Tanks?

Receive articles, stories, and videos about septic tanks delivered directly to your email! Now is the time to sign up. Septic Tanks+ Receive Notifications As seasoned professionals in the onsite business, we sometimes take it for granted that everyone has a clear understanding of certain ideas and that there is no need to go over “that” again. Then we are presented with a question that causes us to reevaluate what we need to address. To give you an example, someone recently inquired about whether or not there is truly a need for an inlet baffle in the septic tank as long as there is no location for toilet paper to hang up and fill up the inlet; the answer was no.


In order for the septic tank to function properly, baffles must be installed at the inlet. The baffle directs raw sewage from the dwelling downhill and into the middle zone of the septic tank, where it is treated. This implies that the effluent takes a circuitous course through the tank, giving it the required detention time to allow the bigger particles to settle out before being discharged. When this occurs, the bottom of the tank forms a sludge layer, in which some solids are broken down and the remainder remains to be removed when the tank is thoroughly cleaned.

  • A floating scum blockage is prevented by the intake baffle from clogging the inlet pipe.
  • When the tank is cleaned, it permits sewage effluent to drain out while keeping the floating scum, which is made up of oil and soap residue, in the tank for later removal.
  • This permits both settleable and floating solids to be trapped in the tank and prevents them from moving downstream after being captured.
  • This represents a significant improvement over the situation only a few years ago, but it does not eliminate the necessity for adequately sized baffles at both the inlet and the outflow.
  • Ensure that the inlet baffle is submerged at least 6 inches below the liquid level but not more than 0.2 times that level to prevent the inflow from disturbing the bottom sludge layer and causing solids to be suspended
  • The outlet baffle should be submerged even deeper to ensure that effluent sent downstream is coming from the middle clear zone. This allows for the storing of sludge and scum in the tank’s storage section. In order to avoid this, updated cleaning recommendations call for cleaning the tank if the entire depth of scum and sludge in the tank equals or surpasses 25 percent of the total depth of tank liquid. Using the above example, if the liquid depth in a tank is 60 inches, the tank must be cleaned when the total amount of sludge and scum in the tank is larger than 1/4 x 60, or 15 inches.
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The tops of both baffles must protrude far enough above the liquid level to keep the scum contained in the tank and prevent it from clogging the input valves. The standard is set at 0.2 times the depth of the liquid in this case. It is necessary to have an air clearance of at least 1 inch between the top of the baffles and the tank cover in order to allow for adequate gas flow and ventilation. It is necessary to maintain the clearance since the collection of gases around the output baffle would cause severe corrosion and degradation.

There should be a 3-inch drop from the intake pipe to the invert of the exit pipe for proper operation. Septic gases are heavier than air and will collect in the low section of the septic tank.

Septic System Knowledge 101: Inlet and Outlet Baffles

While your septic tank is a critical component of your septic system, your baffles are as crucial – in fact, missing baffles can result in significant damage to your system. Posted on So, what exactly is a baffle? In simple terms, it is a mechanism that controls the flow of wastewater into and out of your septic tank. Tees are generally built of clay, concrete, or PVC pipe, and they are often referred to as “tees” in the industry.

The inlet baffle

When wastewater enters your septic tank through an inlet baffle, it is prevented from being disturbed, which helps to keep your septic tank running smoothly. It can also assist in preventing sediments from backing up toward the house if you should encounter a septic system backup at your home or business. A missing intake baffle does not usually have an impact on the general operability of the system, but it is necessary by TCEQ standards in order for the system to function.

The outlet baffle

The outlet baffle is also essential, and it plays a critical role in the process. If you want your system to work correctly, it has to be present. By directing effluent from the tank to the drainfield, it avoids the scum layer from entering the outlet pipe directly and producing drainfield obstructions and system failure before it is necessary.

Baffle installation is not guaranteed

Despite the fact that TCEQ laws mandate that every septic system be equipped with an inlet and outlet baffle, we frequently enter a septic tank and discover that one or both of these baffles are absent. Look into the tank to find out; in some circumstances we have to pump the tank first before we can see what is going on. When we notice that a baffle is missing, we inspect the bottom of the tank while it is being pumped to check whether the baffle has fallen off accidentally. Because there is no evidence of a baffle being there yet it is not at the bottom of the tank, the presumption may be made that it was never put.

If you have a septic tank that is pumped on a regular basis, the pumping specialist should be inspecting the baffles.

Schedule a septic pumping now

We’ve been constructing and maintaining septic systems for more than 75 years, and it is our objective to provide honest and high-quality service to our customers. To book your septic pumping, please contact us online right away. Over the course of 80 years, Van Delden Wastewater Systems has proven itself to be the premier Wastewater System provider, supplying San Antonio, Boerne, and the surrounding Texas Hill Country with services you can rely on today and in the future. We can assist you with any of your wastewater system needs, and our specialists can also assist you with your septic installation and maintenance requirements: 210.698.2000 (San Antonio) or 830.249.4000 (Austin) (Boerne).


In its most basic form, your septic tank separates liquids from solids, then retains the solids until they can be pumped out while sending the liquids to a distribution field. However, this system is far more complicated than it appears at first look. However, these procedures might be a little more sophisticated than they appear at first glance. It is possible that certain sections of the tank, even if they are the simplest and most basic, may need to be replaced from time to time, such as the baffles at the entrance and outflow, as well as the baffle filter (also called effluent filter).

  1. FUNCTIONS OF THE SEPTIC BAFFLE Septic baffles are situated at the intersections where pipes enter and exit the tank to prevent clogging.
  2. In many cases, the outlet baffle is regarded as the most critical baffle, since it prevents particles from departing the tank and making their way to the leach field, where they might clog and effectively damage the leach field system.
  3. Unfortunately, this baffle is also the first to give way under its own weight.
  4. Its purpose is to aid in the smooth flow of wastewater into the tank while minimizing disturbance of the scum layer.
  5. MATERIALS FOR SEPTIC BAFFLE Several types of septic baffles are available, some of which are constructed of concrete and others, particularly newer variants, which are composed of plastic such as ABS.
  6. The exit baffle is frequently equipped with an effluent filter, which increases the effectiveness of the baffle in terms of keeping solids out of the leach field.
  7. The effluent filter will need to be updated on a regular basis after that, but this is a small price to pay for avoiding having to redo your leach field as a result.
  8. Once a year, or whenever your tank is drained out, you should have the concrete baffles evaluated for structural integrity.
  9. Among the other baffle issues include blocked outlet baffles or outlet baffle filters, leaks at the baffle-to-tank connection, and inlet baffle obstructions, among other things.
  10. Baffle blockages can also arise as a result of tree roots entering the system through the input pipe or around the baffle.

Call Pete’s Outflow Technicians for any baffle repairs or replacements, filter installs, or baffle malfunction diagnosis. They have years of expertise in the field. In addition to septic repairs, pumping, and other upkeep, we can provide septic inspections when purchasing or selling a home.

How to Build a Septic Tank Baffle

In your septic tank, a baffle is an essential component, since it prevents solid waste from entering the field lines and also from backing up into the house drainage system. It is necessary to replace or repair the baffle if it has been broken, knocked off, or rusted out completely. When a plumber uses a drain router to unclog a pipe, he or she might knock off a baffle. The router collides with the baffle and falls into the septic tank, where no one is aware of it until a problem arises.

Step 1

Cut a piece of PVC pipe that is approximately 24 inches in length. Although the pipe should ordinarily be 4 inches in diameter, the diameter of the pipe should match the diameter of the drain line coming from your property (usually 4 inches). In addition to connecting to the drain line, this portion of pipe will also extend into the septic tank. On the inlet side of the tank, you’ll find this.) The pipe coupler should be glued to one end of the pipe after it has been cleaned with the pipe cleaner and secured in place.

Step 2

Also, make sure you clean the opposite end of the pipe and the center hole on the tee fitting before continuing. Apply a generous amount of adhesive to the pipe before inserting it into the tee fitting. As the pipe is being inserted into the fitting, twist it slightly to assist in spreading the adhesive evenly. Hold the pipe in place for a few seconds to enable the adhesive to cure a little bit more before moving ahead.

Step 3

Another portion of PVC pipe should be cut. When this portion is installed, it will extend down into the septic tank from where it is connected to the tee fitting and must be long enough to pass through the surface sludge in the tank, which is usually no more than 6 inches thick. The pipe must be extended down roughly 12 inches past the sludge before it can be used. This portion should be reduced to 24 inches in length for safety reasons. This is accomplished by extending below the sludge and preventing it from entering the field lines or backing up into the home drain.

Step 4

One end of the pipe should be cleaned and the PC cement should be applied. The pipe should be inserted into one of the two holes on the tee fitting. To secure the pipe in place, twist it slightly again and keep it in place until the glue has had a chance to build up a little more.

Step 5

Measure and cut a final piece of PVC pipe that is approximately 6 inches long. Pipe cleaner should be used to clean both ends of the pipe before applying pipe cement to only one end of the pipe. Slide the other end of the tee fitting into the last opening in the fitting. Twist it gently and hold it in place for a few seconds to ensure it stays in place.

Step 6

Once you’ve cleaned the second pipe coupler, you’ll want to apply cement to the end of the short pipe you just fitted.

Slide the coupler onto the pipe and hold it in place for a few seconds to ensure that it is securely attached. Additional glue should be applied to the interior of the coupler before inserting the grate insert into the coupler. Allow for thorough drying of all fittings before installing them.

Complete Guide to Your Septic Tank

When sewage exits your home and enters your septic system, the septic tank is the first component that it comes into contact with. Eventually, all of the greywater and waste will fill the tank, and it will then flow out into your absorption area. Although the septic tank is often the most visible structure in your septic system, many people are confused about how it works. If you want to learn further more about septic systems, you can get our ebook by clicking on the link below. It includes information about septic tanks, septic systems, maintenance, and other topics.

How A Septic Tank Works

As soon as you open the lid of a septic tank, you will discover that the tank is completely full of sewage and nearly filled to the top. Typically, the first notion that comes to mind is that the tank is ready for pumping. However, this is the usual operating level at which a tank functions. As the tank fills up, it overflows down the drain field and into the ground. Many people are perplexed as to why the sewage and other trash are not simply discharged into the drain field directly. What’s the point of having tanks to fill if everything just pours out onto the field in the first place?

This may appear inconsequential, yet it is critical to the operation of a functional system.

  1. The floating solids form the topmost layer (or scum). Anaerobic bacteria did not break down any of the oils, fats, greases, or anything else that was present in the wastewater. Sludge can be found at the very bottom of the well. Septic tank pumping is necessary to remove both floating particles and sludge, which are the primary reasons for frequent septic tank cleaning. If such solids and semi-solid sludge are allowed to enter your drain field, the lifespan of your drain field will be significantly reduced. The cleared effluent is found in the space between the sludge and the floating particles. In the tank, this is the only trash that may be discharged onto the field, and it should account for the vast majority of the waste.
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The anaerobic bacterium that colonizes the tank is the majority of the population. Anaerobic bacteria are any bacterium that can survive in the absence of oxygen. For this reason, it is still possible to close a septic tank lid while the waste is still able to be broken down. Because of the tank’s construction, waste can flow into the tank, where it will be collected, and then be discharged. The input pipe of a tank is meant to be approximately 3 to 4 inches above the outflow pipe of the tank.

In order to ensure that the cleared effluent departs the tank without bringing any floating particles with it, it is necessary to use baffles to accomplish this.


Baffles, despite their straightforward design, play a critical role in the long-term performance of your septic system. In your septic tank, there are two baffles to contend with. The entrance baffle is one type of baffle, while the exit baffle is another. This baffle’s duty is to send any waste down into the tank without causing it to stir up the particles already in the tank. It is usually made of metal. This helps the tank to settle and the different layers to grow in a more natural manner.

The exit baffle is generally identical in appearance to the inlet baffle, although it serves a somewhat different purpose.

As the waste level in the tank grows, it is forced upwards through the outflow baffle. The outside of the baffle will prevent the passage of floating solids, while the effluent will stream out into the drain field.

Inlet Observation Port

The intake observation port is the first component of your tank that you may be able to observe. This is normally a 4 inch pipe with a white cover on the end to protect the end fitting. The mower will locate the item if you haven’t already done so. Despite the fact that they might be a nuisance when mowing, they are beneficial for a variety of reasons.

  1. They serve to identify the location of the tank. The inlet observation port may also be used to return via the house if someone is examining your sewer line and cannot reach it from the house. This saves a significant amount of time when pumping out your tank or inspecting the system. Aside from that, the intake observation port is quite handy for checking for any unneeded trickles into your septic system. Check to see if there are any slow trickles flowing into the septic system after making sure it has been at least 20 minutes since something has drained into it. This is something you should conduct around twice a year to ensure that everything is functioning properly.

Septic Tank Lid

Just beyond your intake observation port will be your septic tank lid, which will be located just beyond that. This covers the manhole in the center of your tank’s interior. This is the location where all pumping should take place. It has a huge aperture ranging in size from 18″ to 24″ and occasionally even greater. Having a septic tank lid on your lawn is something that many people do not enjoy. However, if it is clearly visible, it may save your pumper a significant amount of time and, perhaps, money.

  • If the lid is too low during a house sale, an inspector will ask that the lid be raised to a level that is closer to the surface of the soil.
  • This is helpful for maintenance purposes, as well as so that you may divulge their location if you decide to sell your property in the future.
  • If concrete lids are not set back into place carefully, they may crack.
  • Over time, this might put additional strain on your drainage system.

Septic Tank Pumping

We often get asked “how often should I pump my tank,” which is another frequently asked topic. The answer is straightforward: at the absolute least, it should be done every two years. When it comes to having your septic tank pumped, there are a few things to keep an eye out for that are very crucial. Remember that the purpose of pumping is to remove the floating particles on top of the water and the sludge at the bottom of the water. In order to accomplish this, a pumper must get access to the manhole in the center of the tank.

The center manhole can also assist them in seeing considerably more of the tank and determining whether or not a significant amount of the solids has been removed.

This can cause your input baffle to become detached, resulting in the pumper being unable to detect the quantity of solids remaining in the tank.

A good pumper will back flush some of the water he has pumped out in order to mix up the sediments in the bottom of the tank, and then vacuum up the remaining water.

After everything has been pumped out, they may look inside the tank with a flashlight to see if there are any fractures, roots, or degeneration below the level of the prior liquid. Please contact us to book an appointment to have a dependable pumper come to your location.

Different Types of Septic Tanks

There is a wide variety of septic tanks that may be provided to customers. Therefore, it is critical to pose the question “What type of septic tank do I have?” before proceeding. Some of the most often encountered are listed below.

Primary and Secondary Tanks

In 1997, the state of Pennsylvania mandated that all new systems be equipped with a secondary settling tank. Therefore, if you were to repair your drainfield and apply for a permit, you would also be required to install a second tank. The reasons behind this was that while the first tank was settling all of the solids, there was still some that was flowing over into the drain field after it was filled. With this second tank, the solids could be settled and more waste could be broken down, resulting in a more efficient treatment process.

The secondary tank is normally situated immediately following the primary tank.

If you had a fully new septic system done after 1997, there is a good chance that your installer selected a less expensive option than two tank installation.

Dual-chamber Septic Tank

Instead of using separate tanks, a dual-chamber tank makes use of chambers. A enormous rectangular tank with a wall in the middle is what you’ll find here. A 1,250-gallon dual-chamber tank is a standard size for this type of tank. The first compartment contains 750 gallons, while the second chamber stores 500 gallons. The most significant advantage of a dual-chamber septic tank is the cost savings associated with its installation. There is only one hole to dig, and only one tank to put in it.

  • When a new system is installed, these are the first things to look for.
  • If you have a dual-chamber tank, be sure that both chambers have been drained out before continuing.
  • The lid of the second chamber is sometimes buried deeper than the lid of the first compartment.
  • Being aware that you have a dual-chamber tank and that there are two lids will assist you in keeping your system in good working order.

Holding Tank

Many individuals use the phrases “holding tank” and “septic tank” interchangeably when referring to the same thing. There are, nevertheless, significant distinctions between the two. A holding tank is substantially larger and has an usual volume of 2000 gallons. It is used to store waste water. The tank does not have an outlet, thus it “holds” all of the sewage that is introduced into it. Even the smallest amount of wastewater that escapes the home is collected in the holding tank. A float switch is located towards the top of a holding tank.

  1. This notifies the homeowner that a pumper will be dispatched to come out and pump the holding tank.
  2. A monthly pumping schedule is required if you possess a holding tank, which you should do on an as-needed basis.
  3. What are the benefits of using a holding tank?
  4. In certain cases, the residence does not have enough space for a septic system and does not have a connection to municipal sewage.

It is the sole option available to a household with a holding tank. A more plausible scenario is that the house is not frequently used. Depending on whether your house is a vacation home or a year-round residence, installing a full septic system may not be worth the investment.


If you have a cesspool, it is possible that you do not have a septic tank. This is due to the fact that a cesspool may serve as both a septic tank and an absorption area. They are a form of septic system that is no longer in use and is considered outdated. Cesspools are created by excavating a large pit. It was assembled into a big cylindrical building with cinder block along the sides and open soil on the bottom, which was constructed by an installer. The cinder blocks are stacked one on top of the other with no mortar in between the layers.

When the dirt at the bottom of the cesspool is unable to drain properly, the cesspool begins to fill.

At this moment, the cesspool is no longer functional due to its deterioration.

Solids will ultimately accumulate in the soil and prevent it from draining properly.

Aerobic Tank

Anaerobic bacteria are present in all of the tanks that we have discussed so far, and these bacteria help to break down waste before it enters the drain field. The aerobic tank is used to treat sewage by introducing aerobic microorganisms into the system. Anaerobic bacteria, as we well know, flourish in an environment where there is no oxygen. Aerobic tanks provide airflow, which allows bacteria that use oxygen (aerobic bacteria) to flourish. Two additional components are included in the tank to facilitate the growth of aerobic bacteria: a system for generating air supply and propagation medium (usually a honeycombed structure).

The air supply is responsible for introducing oxygen into the tank.

The anaerobic bacteria found in conventional systems contribute to sludge formation and have the potential to draw oxygen from the soil, impairing the soil’s capacity to drain.

Septic Tank Problems

Septic tanks are constructed to last for many years. The tank maker pours them so that they are approximately 3 inches thick. There is a 25-year warranty on them, which is a considerable period of time, but not an eternity. Eventually, indicators of degradation begin to appear in the tank’s condition. This can take many different forms, but the following are the most prevalent.

Chemical Reaction

As the bacteria begin to decompose the sewage in the tank, they emit gases that rise beyond the level of the liquid. Those gases are converted to sulfuric acid by the bacteria that live above the liquid level. Over time, the sulfuric acid levels in the concrete rise to the point where the concrete begins to crumble. Because of this response on the top section of the tank, a critical component of checking tanks is examining above the level of the liquid to determine whether there is any structural damage present.

This reaction can not only cause the tank to fail, but it can also serve as the catalyst for the development of subsequent septic tank problems.

Exposed Rebar

The rebar can become exposed as a result of the concrete eroding and revealing the rebar over time. This is a significant red flag for septic inspectors who are looking into the situation. If an inspector notices exposed or corroded rebar in a tank, he or she will declare the tank unacceptable. You can tell that the concrete in the tank has gone mushy and is collapsing when you see the rebar sticking out of it.

Deteriorated Baffles

Many tanks are equipped with concrete baffles that protrude into the tank. As a result of their greater surface area exposed to the chemical reactions induced by bacteria, baffles are typically the first component within the tank to fail. When the baffles fail, you lose the ability to perform critical functions. The output baffle is the most critical of the three. If there is no exit baffle, there is nothing to prevent the sediments from floating out into the drain field and into the environment.

Cracks in the Tank

There may be a few feet of dirt cover on top of the tank when it is installed in the ground by a professional installation company. The earth on top of the tank adds a large amount of weight to the structure. Over time, this weight, along with the chemical reaction in the tank, which weakens the tank’s construction, can cause fractures to appear in the tank’s structure. They often begin at the very top of the tank. The greater the depth to which the tank is buried, the greater the likelihood that a fracture would develop.

Root Intrusion

Planting trees and huge shrubs directly next to sewage tanks is something that many people do on purpose. They may have planted plants to assist beautify their environment, but they may have done so without realizing it, putting the construction of their tanks at risk. The tree roots will begin to burst through the concrete tanks, causing structural damage to the structures beneath. Although it may appear strange, a tree has the ability to cut through thick concrete. However, after time, the thin roots penetrate the tank walls and cause damage.

  1. The development of the roots will result in cracking and, eventually, the tank will collapse.
  2. It is possible to engage a professional to cut the roots and remove them from the tank while they are still thin.
  3. By now, you should have a solid foundation of knowledge about septic tanks under your belt.
  4. This will aid you in the maintenance of your system as well as the purchase or sale of a new property.

If you have a septic system or are planning to purchase one for the first time and would want a solid foundation of information about septic systems and care, click here to learn more about our ebook.

Septic Tank Installation – Stangland Septic Service – Aberdeen, WA

Most septic tanks are rectangular or cylindrical containers that are buried underground and are constructed of concrete, fiberglass, or polyethylene. The tank is filled with wastewater from your toilet, bath, kitchen, laundry, and other sources. Heavy materials sink to the bottom of the tank, where they are partially decomposed by bacterial activity, resulting in digested sludge and gases. Fats and oil, among other lighter particles, float to the surface and form a scum layer on the surface of the water.

  1. The use of two compartment tanks, which are more effective in settling solids, is necessary for modern systems.
  2. This device slows the flow of entering wastes and lowers the amount of disruption of settled sludge caused by the wastes.
  3. All tanks should have easily accessible lids so that the status of the baffles can be checked and the tanks may be pumped in both compartments.
  4. In the septic tank, solids that have not decomposed are left behind.
  5. Most septic tanks need to be pumped every 3 to 5 years, depending on the size of the tank and the amount and kind of particles that are introduced into the tank during operation.
See also:  What Persentage For A Sewer Drain Pipe To The Septic Tank? (Solution)

Everything You Need to Know About Your Septic Tank

What is a septic tank, and how does it work? A septic tank is a water-tight container that is often constructed of concrete, fiberglass, or polyethylene to prevent flooding (plastic). In fact, it is only one component of the entire septic system, which includes several other components such as a distribution box, pumps, float switches, aerators, filters, and other accessories. Septic systems are used to treat wastewater on-site in many rural and suburban areas that do not have access to centralized sewage systems.

The components of a conventional septic tank are depicted in the diagram below.

These are:

  1. The Tank: This is the water-tight tank into which wastewater from your house is sent once it has been collected. A hole, fracture, or any other structural damage should not be present. Access Ports: When a trained pumper comes to clean up your tank, they will utilize an access port. When it comes to tank cleaning, it is critical that the access port be large enough to allow the pumper to move the hose about within the tank properly. A common application for risers is to elevate septic tank access above ground level, eliminating the need to dig up your septic tank every time it has to be pumped. Last but not least, the access port should be securely secured with a child-resistant lid. It is vital for the protection of your family that septic tank lids are securely fastened with screws and that they are not cracked or damaged. Pipes for entering and exiting the septic tank: Wastewater from your house enters the septic tank through the intake pipe. After the particles have settled out, the effluent is discharged from the septic tank through the exit pipe and into the drainage field. There should be roughly 3 inches between the output pipe and the intake pipe. A baffle is fitted on the intake pipe within the tank, and it serves to keep the water out. It provides a variety of functions. Additionally, it helps to avoid the build-up of scum and its backup into the intake pipe It is also important for solids to settle in the tank that the input baffle be properly installed. When wastewater enters the septic tank, it should hit the entrance baffle, which will reduce the flow and prevent the tank from becoming agitated. This permits the contents of the septic tank to remain at rest, allowing the solids to sink to the bottom of the tank. The intake baffle can also prevent odorous odors from entering the sewage line and spreading throughout the home or business
  2. And It is even more crucial than the inlet baffle to have an exit baffle in place because it helps to prevent scum and other particles from flowing directly into the outflow pipe and eventually into the drain field. Gas Deflector/Effluent Filter: As gas bubbles climb to the top of a septic tank, they may bring sediments with them. This is why an effluent filter is used. A gas deflector prevents these solid-carrying gases from entering the output line by preventing them from entering. However, while not every septic tank is equipped with an effluent filter, it is strongly suggested as an additional safety to prevent particulates from entering your drain field.

Any of the above-mentioned components in your septic tank should be checked for damage or missing parts as soon as possible, and the problem should be resolved by a septic system specialist. What is the operation of a septic tank? Each and every drop of wastewater from your home is channeled via a main drainage pipe and into your septic tank. Solids are prevented from entering your drain field by using the septic tank, which is just a settling tank that serves as a filter. Ideally, the water should be kept in the tank for at least one day in order to enable time for the solids to settle.

  1. Heavy materials, such as dirt and digested waste, will sink to the bottom of the tank and form a sludge layer at the bottom of the tank.
  2. Effluent is the term used to describe the liquid that exists between the sludge and scum layers.
  3. It is critical that solids are given adequate time and space to settle before being used.
  4. In fact, the Pennsylvania Department of Environmental Protection mandates a minimum capacity of 900 gallons for any new septic tank installations in the state (the table below shows recommended septic tank capacities for different sized homes).
  5. Ideally, you should have your septic tank emptied every two to three years, according to the Pennsylvania Septage Management Association (PSMA).
  6. If a drain field has been ruined by a buildup of sediments, it might cost tens of thousands of dollars to rebuild it.
  7. It is crucial to understand that your septic tank must be completely filled with liquid in order to function effectively.
  8. The septic tank diagram shown above depicts the correct operating level of a septic tank in a residential setting.
  9. The result is that whenever more wastewater is added to the tank, an equal volume of effluent will be discharged from the tank and drain into the drain field.
  10. The opposite is true if the liquid level is higher than the outflow line, which may signal a blockage in a line downstream from the septic tank or in the drain field.

If you’re wondering if your septic tank is full, a skilled pumper will consider it “full” once solids have filled one-third of the tank’s capacity. This is the time of year when your septic tank will need to be pumped.

Septic Tank Services

With anything from high-quality repairs to reasonably priced installs, you can count on receiving long-lasting service at a competitive price. United Sanitation Services Inc is a fully certified and insured septic system pumping and installation company serving the counties of Boone, Winnebago, and McHenry. With our years of knowledge and expertise, you can be confident that you will obtain high-quality outcomes across the board, and it is our mission to guarantee that you fully comprehend how your system performs.

Septic Tank System Operation

It is only during a pump-out that the septic tank can be examined for leaks, which can only be done during the process. It is quite rare for a contemporary tank to experience leaks. If the tank is made of metal, on the other hand, it has a lifespan of around 20 years and must be replaced when it fails. The use of baffles is essential for the correct operation of a septic tank because they aid in the prevention of particles from flowing through the tank and into the absorption area. The baffles are the only elements of a septic tank that are known to fail on a regular basis.

When it comes to preventing damage to the absorption field, the outlet baffle is more critical.

This is less expensive than the replacement of the absorption field.

Pumping and Cleaning

Having your septic tank sediments drained out is a must if you want to maintain the health of your system. The frequency will be determined by the size of your system, the number of people living in your home, the amount of waste that has been added (including disinfectants, bleaches, and detergents), and the previous care that the system has had. You may depend on our knowledge and experience to assist you in establishing a pumping plan for your system.

Routine Maintenance

Maintaining your system on a regular basis is essential in order to avoid costly problems in the future. Our trained professionals will assist you with the repair, installation, and education of your system to guarantee that you receive the great service that you deserve! For further information, please contact us at 815-547-5700 right away. Following these simple guidelines can assist you in keeping your septic system in excellent working order and avoiding the need for further pumping: Do:

  • Monthly, add a packet of enzymes to the tank to keep the bacteria count at a healthy level. Systemic septic tanks provide the functions of both sewers and wastewater treatment facilities. Bacterial activity takes place in order to breakdown the waste material. When we pump your tank, we can offer enough bacteria for a year’s worth of food. For extra boxes, please contact our office. Reduce the quantity of water you use to a bare minimum. Water conservation should be practiced. Repair any leaky toilets or faucets as soon as possible. Other sources of water, such as roof drains and sump pumps, should be diverted away from the septic system.
  • Fill the tank with dangerous or potentially hazardous substances. Even minute amounts of paints, varnishes, thinners, waste oil, photographic solutions, pesticides, and other organic compounds might interfere with the biological digestion that is going place inside the system
  • Nevertheless, even little amounts of these substances can be harmful. Placing plastic, cat litter, cigarette filters, condoms, tampons, sanitary napkins, paper towels, or face tissues in the septic system will cause it to back up and overflow. These items quickly load the tank with solids and reduce the tank’s efficiency by decreasing its efficiency. Moreover, they can clog the sewage pipe leading to the tank, resulting in wastewater backing up into the house. Grease and fats should be poured down the kitchen sink drain. As a result, they solidify and might create a blockage. Do many loads of laundry in a row to save time. Spread the washing out over the course of the day or over several days to reduce the strain on the system. Waste disposals are generally considered to be a source of system overload and should be avoided if possible.

Aerobic Treatment Unit

Applied thermal units (ATUs) are beneficial and required at sites with “disturbed” soil (compacted, chopped, or filled) and in ecologically sensitive places such as those near bodies of water, shallow bedrock, or high water tables, among other things. Because wastewater exits an ATU as high-quality effluent, it is possible that the soil in the absorption field will be better prepared to receive the wastewater in the future. After the big particles have been removed by the septic tank, the liquid effluent is routed via the ATU before reaching the absorption field for treatment.

  1. ATUs that are well-designed provide bacteria with time and room to settle while also delivering oxygen to the bacterium and mixing the bacteria with their food source (sewage).
  2. ATUs require more frequent maintenance than septic tanks.
  3. Depending on the criteria of the local government and the manufacturer’s recommendations, the system may require maintenance every three to six months or every year (usually twice a year).
  4. There must be a visual check of the effluent, and in many cases, a laboratory study is required.

In the event that there are difficulties with settling, there will be difficulties with absorption. Regular inspections and repairs are required for these tanks.

Lift Stations

It is necessary to pump wastewater from a low elevation to a high elevation in order for gravity to be utilized in the transportation of the wastewater from the septic system to the absorption field. Lift stations contain pumps, valves, and electrical equipment that are required to pump wastewater from a low elevation to a high elevation. Most systems are equipped with alarms that alert consumers when pumps fail, and additional alarms can be installed to avert emergency situations. Call today for a FREE estimate!

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Daryl and his team were always on time and arrived at the job site early and on time.

He kept me up to speed and informed on the development of the case, as well as what the next steps were throughout the entire process.

I would absolutely suggest this company.

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