How Do Septic Tank Drainfields Work? (Solved)

The drainfield is a shallow, covered, excavation made in unsaturated soil. Pretreated wastewater is discharged through piping onto porous surfaces that allow wastewater to filter though the soil. The soil accepts, treats, and disperses wastewater as it percolates through the soil, ultimately discharging to groundwater.

How do I know if my drain field is bad?

5 Signs of Drain Field Problems Pools of Water in the Drain Field. Soggy spots in the yard are a possible sign that you have a problem with the drain field. Sewage Odor in the Drain Field. A drain field should only see liquid. Sewage Odor in the House. Greener Grass. Problems with Toilets and Drains.

Do septic tank additives really work?

There is little scientific data to suggest that you should add bacteria or enzymes to your septic system. The United States Environmental Protection Agency reported that biological additives do not appear to improve the performance of healthy septic tanks.

Does septic tank shock work?

Septic Shock clears clogged, foul-smelling septic systems and helps to digest soap, paper and grease. Pouring two liters (one container) directly into the toilet and flushing adds millions of beneficial bacteria to the process.

How do septics work?

Septic tanks work by allowing waste to separate into three layers: solids, effluent and scum (see illustration above). The solids settle to the bottom, where microorganisms decompose them. The middle layer of effluent exits the tank and travels through underground perforated pipes into the drainage field.

How does a septic tank soakaway work?

A soakaway in simple terms is a hole in the ground filled with rocks. It will be set away from the septic tank, and wastewater is then released into it. That wastewater will diffuse through the rocks and slowly escape into the surrounding ground. It is connected to a septic tank using pipes.

Do septic tanks need additives?

Septic tanks are designed to take care of waste disposal on their own — no additives needed. With regular septic tank pumping and inspections, a septic system should last decades. A septic system is used primarily in rural areas without access to city sewer systems.

How can I make my septic tank work better?

How to Keep Your Septic System Healthy

How the Septic System Works.
Don’t Overload the Septic Tank and Drain field.

Use an Efficient Toilet.
Don’t Treat the Toilet as a Garbage Disposal.
Don’t Pour Grease Down the Drain.

Divert Rain Water From the Septic Drain Field.
Keep Trees Away from the Septic System.

How do you tell if your septic tank is full?

How to tell your septic tank is full and needs emptying

Pooling water.
Slow drains.
Odours.

An overly healthy lawn.
Sewer backup.
Gurgling Pipes.

Trouble Flushing.

How do I keep my septic tank healthy?

Do’s and Don’ts when maintaining your septic system

Regularly inspect and maintain your septic system.

Pump your septic tank as needed.
Keep your septic tank lids closed and secured.
Be water-wise.

Direct water from land and roof drains away from the drainfield.
Landscape with love.
Keep septic tank lids easily accessible.

How fast does septic tank shock work?

A good bacterial septic tank shock treatment loaded directly into the system will normally open a drainfield digesting bio-mat in 1 to 5 weeks.

Do you need to pump both sides of a septic tank?

Septic tanks installed after the late 1980s have two compartments, and it is important to pump out both compartments each time. Most homeowners are unaware when their septic tank has two compartments; some companies use that to their advantage, charging to pump both sides of the tank but only actually pumping out one.

How long will a soakaway last?

How Long Do Soakaways Last? They should last the life of the house, at least 100 years but only if installed correctly and filters are used to prevent leaves and other material clogging the soakaway.

How far should a soakaway be from a septic tank?

Minimum distances that the drainfield should be from: Buildings – 15 metres. Boundaries – 2 metres. Water abstraction point (well, spring, bore hole) – 50 metres.

What is the difference between a septic tank and a soakaway?

A soakaway is a hole dug in the ground and filled with rubble and coarse stones, designed to disperse water back into the surrounding ground without flooding. A septic tank has two chambers and is buried underground in the same way as a cesspit.

How Does a Septic Tank Work?

Mr. Fix-It-Up-For-The-Family You may save a lot of money if you understand how a sewage treatment system works—and what can go wrong—so that you can handle your own septic system maintenance.

How does a septic tank work?

Pumping the tank on a regular basis eliminates sludge and scum, which helps to keep a septic system in good working order. It is possible for a well-designed and well built septic system to last for decades, or it might collapse in a matter of years. It is entirely up to you as long as you can answer the question of how do septic tanks function. Healthy septic systems are very inexpensive to maintain, but digging up and replacing a septic system that has completely collapsed may easily cost tens of thousands in labor and material costs.

It’s critical to understand how a septic tank works in order to maintain one.

Let’s take a look below ground and observe what happens in a properly operating septic system, shall we?

Understand that a septic system is a cafeteria for bacteria

Bacteria are responsible for the proper operation of a septic system. They decompose garbage, resulting in water that is clean enough to safely trickle down into the earth’s surface. The entire system is set up to keep bacteria healthy and busy at all times. Some of them reside in the tank, but the majority of them are found in the drain field. 1. The septic tank is the final destination for all waste. 2. The majority of the tank is filled with watery waste, referred to as “effluent.” Anaerobic bacteria begin to break down the organic matter in the effluent as soon as it enters the system.

A layer of sludge settles to the bottom of the container.
4.

Scum is mostly constituted of fats, greases, and oils, among other substances.
Grease and oils float to the surface of the water.
(5) A filter stops the majority of particles from reaching the exit pipe.

The effluent is discharged into the drain field.
Effluent is allowed to leak into the surrounding gravel because of holes in the drain septic field pipe.
The garbage is completely decomposed by aerobic bacteria found in gravel and dirt.

Potable water seeps into the groundwater and aquifer system from the surface.

Septic Tank Clean Out: Don’t abuse the system

Septic systems that have been correctly planned and constructed require just occasional ‘pumping’ to remove the sludge and scum that has built up inside the tank.

However, if you don’t understand how a septic tank works, you may unintentionally hurt or even destroy the system.

Drains are used to dispose of waste that decomposes slowly (or not at all). Cigarette butts, diapers, and coffee grounds are all known to cause issues. Garbage disposers, if utilized excessively, can introduce an excessive amount of solid waste into the system. Lint from synthetic fibers is emitted from washing machine lint traps. This substance is not degraded by bacteria in the tank and drain septic field. Bacteria are killed by chemicals found in the home, such as disinfecting cleansers and antibacterial soaps. The majority of systems are capable of withstanding limited usage of these goods, but the less you use them, the better. When a large amount of wastewater is produced in a short period of time, the tank is flushed away too quickly. When there is too much sludge, bacteria’s capacity to break down waste is reduced. Sludge can also overflow into the drain field if there is too much of it. Sludge or scum obstructs the flow of water via a pipe. It is possible for tree and shrub roots to obstruct and cause harm to a drain field. Compacted soil and gravel prevent wastewater from seeping into the ground and deprive germs of oxygen. Most of the time, this is caused by vehicles driving or parking on the drain field.

Get your tank pumped…

Your tank must be emptied on a regular basis by a professional. Pumping eliminates the accumulation of sludge and scum that has accumulated in the tank, which has caused the bacterial action to be slowed. If you have a large tank, it may be necessary to pump it once a year; but, depending on the size of your tank and the quantity of waste you send through the system, you may go two or three years between pumpings. Inquire with your inspector about an approximate guideline for how frequently your tank should be pumped.

…but don’t hire a pumper until you need it

Inspections and pumping should be performed on a regular basis. However, if you’re not afraid of getting your hands dirty, you may verify the sludge level yourself with a gadget known as The Sludge Judge. It ranges in price from $100 to $125 and is commonly accessible on the internet. Once you’ve verified that your tank is one-third full with sludge, you should contact a professional to come out and pump it out completely.

Install an effluent filter in your septic system

Garbage from your home accumulates into three distinct strata. The septic filter is responsible for preventing blockage of the drain field pipes.

Septic tank filter close-up

The septic tank filter is responsible for capturing suspended particles that may otherwise block the drain field pipes. Obtain an effluent filter for your tank from your contractor and place it on the outflow pipe of your tank. (It will most likely cost between $50 and $100, plus labor.) This device, which helps to prevent sediments from entering the drain field, will need to be cleaned out on a regular basis by a contractor to maintain its effectiveness.

Solution for a clogged septic system

If your septic system becomes clogged and you find yourself having to clean the filter on a regular basis, you might be tempted to simply remove the filter altogether. Hold on to it. Solids, wastewater, and scum are separated into three levels in septic tanks, which allows them to function properly (see illustration above). Solids sink to the bottom of the container, where microbes breakdown them. The scum, which is made up of trash that is lighter than water, rises to the surface. In the drainage field, the middle layer of effluent leaves the tank and goes through an underground network of perforated pipes to the drainage field.

Keep the effluent filter in place since it is required by your state’s health law.
Waste particles might flow through the filter and clog the perforated pipes if the filter is not used.
Your filter, on the other hand, should not require cleaning every six months.

A good chance is high that you’re flushing filter-clogging things down the toilet, such as grease, fat, or food scraps.
A garbage disposal will not be able to break down food particles sufficiently to allow them to flow through the septic tank filtration system.
Plastic items, disposable diapers, paper towels, nonbiodegradable goods, and tobacco products will clog the system if they are flushed through it.

For additional information on what should and should not be flushed down the toilet, contact your local health authority. More information on removing lint from your laundry may be found here.

Get an inspection

Following a comprehensive first check performed by an expert, regular inspections will cost less than $100 each inspection for the next year. Your professional will be able to inform you how often you should get your system inspected as well as how a septic tank functions. As straightforward as a septic system appears, determining its overall condition necessitates the services of a professional. There are a plethora of contractors who would gladly pump the sludge out of your tank, but many, in my experience, are unable to explain how a septic system works or how it should be maintained.

A certification scheme for septic contractors has been established in certain states; check with your state’s Secretary of State’s office to see whether yours is one of them.

Also, a qualified inspector will be able to tell you whether or not your tank is large enough to accommodate your household’s needs, as well as the maximum amount of water that can be passed through it in a single day.

As you learn more about how a septic tank works, your professional should be able to tell you whether or not your system will benefit from this treatment.

Alternatives to a new drain field

If an examination or a sewage backup indicate that your drain field is in need of replacement, the only option is to replace it completely. As a result, it’s important to talk with a contractor about other possibilities before proceeding with the project.

Pipes should be cleaned. A rotating pressure washer, used by a contractor, may be used to clean out the drain septic field pipes. The cost of “jetting” the pipes is generally around $200. Chemicals should be used to clean the system. A commercial solution (not a home-made one) that enhances the quantity of oxygen in the drain field should be discussed with your contractor before installing your new system. Septic-Scrub is a product that I suggest. A normal treatment will cost between $500 and $1,000. Make the soil more pliable. The practice of “terra-lifting,” which involves pumping high-pressure air into several spots surrounding the drain field, is authorized in some regions. Some contractors use it to shatter compacted dirt around the pipes. Depending on the circumstances, this might cost less than $1,000 or as much as $4,000 or more.

Protect your drain septic field from lint

When this device is in place, it inhibits lint from entering the system, especially synthetic fibers that bacteria are unable to digest. One of these filters, which I’ve designed and termed theSeptic Protector, was invented by me. An additional filter is included in the price of around $150 plus delivery. Learn more about how to filter out laundry lint in this article.

Don’t overload the septic system

This device prevents lint from entering the system, particularly synthetic fibers, which bacteria are unable to digest and hence cause infection. Septic Protector is the name I gave to one of these filters that I designed myself. An additional filter is included in the price of roughly $150 plus delivery. See this article for further information on how to filter out lint from your clothes.

Meet the Expert

Septic systems, according to Jim vonMeier, are the solution to America’s water deficit because they supply cleaned water to depleted aquifers, according to vonMeier. He travels the country lobbying for septic systems, giving lectures, and giving testimony. For septic system inquiries, as well as information on the operation of the septic tank, contact him by email.

Septic System Guide: How It Works and How to Maintain It

As soon as you flush the toilet in most metropolitan locations, the waste is pumped out to the nearest sewage treatment facility. Garbage is processed at this factory, which separates it into two types of waste: water that is clean enough to be dumped into a river and solids known as residual waste. The remaining material is either disposed of in landfill or utilized as fertilizer. Septic systems, which are used in places where there aren’t any sewage treatment plants, provide a similar function, but on a much smaller scale.

In most cases, waste-water exits the home and drains into an underground septic tank that is 20 to 50 feet distant from the house, kicking off the treatment process.

What are Septic Tanks and How Do They Work?

Septic tanks are normally composed of concrete or heavyweight plastic and have a capacity of 1000 to 2000 gallons, depending on the manufacturer. In the tank, there are two chambers that are divided by a portion of a wall. The waste from the residence is channeled into the bigger room. Solids sink to the bottom of the chamber, and liquids make their way through a partial wall into the smaller second chamber, which is located above it. Anaerobic bacteria, which are found naturally in the environment, digest the solids and convert them into water, carbon dioxide, and a tiny amount of indigestible debris.

Septic Fields Distribute Liquid Effluent

The second chamber has an output pipe via which the liquid (known as effluent) from the tank is discharged to a disposal or leach field, depending on the situation. It is drained into the earth by a network of perforated pipes or through perforated plastic structures known as galleries, which are constructed of perforated plastic. It is common practice to lay the pipe or galleries in a bed of gravel, which aids in dispersing the liquid. During the course of the effluent’s percolation through the soil, the soil absorbs remaining bacteria and particles, resulting in water that is safe to drink by the time the water reaches the aquifer deeper down.

They are not much deeper than that since a large quantity of water escapes through evaporation or is transpired by grass growing above ground.
If you have sandy soils that drain too rapidly, you may not be able to treat the wastewater properly.

Sometimes the water cannot be disposed of properly because the natural soils include a high concentration of silt or clay.
Topsoil and grass are applied to the mound, which allows more water to leave through transpiration and evaporation than would otherwise be possible.

Septic Systems Rely on Gravity, Most of the Time

The majority of septic systems rely on gravity to transfer the liquid from the home to the tank and then to the field where it will be disposed of. However, due to the slope of the land, the tank or the field may need to be higher than the house in some instances. It is necessary to have a pump, or occasionally two pumps, in order for this to operate. A grinder pump, which liquefies sediments and is installed in a pit in the basement or crawlspace of the home, will be used if the tank is higher than the house.

Sewage pumps are essentially large sump pumps that are used for heavy-duty applications. When the amount of effluent in the pit reaches a specific level, a float activates a switch, which then activates the pump, which empties the pit.

How to Treat Your Septic System

It is not necessary to do much to keep your septic system in good working order, other than cut the grass above it and keep the drainage area free of trees and plants with roots that may block it.

How Often Do You Need to Pump A Septic Tank?

You should have a septic provider pump out the particles from your tank every two years, at the absolute least. A manhole at the surface of the tank will provide the pump operator access, but older systems may necessitate digging a hole in the tank’s top so the pumping hatch can be exposed. Unless the tank is continuously pumped, sediments will build up in it and ultimately make their way into the leach field, clogging it. You’ll know it’s occurring because untreated effluent will rise to the surface of the tank and back up into the home, causing it to overflow.

Pumping the tank on a regular basis can ensure that the leach fields continue to work eternally.

What to Do if Your Septic System Fails

Pumps in a pumped septic system will ultimately fail, just as they will in any mechanical system. Most pumps are equipped with an alarm that sounds when the effluent level in the pit is greater than it should be, indicating that the pump has failed and has to be replaced. This is a job that should be left to the professionals. Visit the following website to locate a trusted list of installation and septic system service companies in your area:

The National Onsite Wastewater Recycling Association’s Septic Locator

The National Association of Wastewater Technicians
And the National Association of Onsite Wastewater Recycling Association

It is rare for a homeowner to have to worry about their septic system because it is well-maintained and doesn’t cause problems. Simple maintenance, such as keeping the tank pumped and the lawn trimmed, should result in decades of trouble-free service. What kind of protection do you have in place for your home’s systems and appliances against unforeseen maintenance needs? If this is the case, you might consider purchasing a house warranty.

Home Warranty Coverage for Roof Leaks
Septic Warranty Coverage and Costs
And more. Plans for protecting your mobile home’s warranty

What Is Home Repair Insurance and How Does It Work? How to Find the Most Reasonably Priced Home Appliance Insurance

SEPTIC-TANK DRAIN FIELDS: WHAT YOU SHOULD KNOW ABOUT PROTECTING THEM FROM HARM

While a septic system may appear to be impenetrable, the fact is that neglect may cause severe damage, which may even result in a complete shutdown of the system. Septic systems may give many years of reliable service if properly maintained, but they can also be completely damaged by reckless actions. The drain field is an element of your septic system that is particularly prone to failure. More information on this crucial component, as well as numerous important measures that will help to keep your drain field in good condition, may be found in the sections below.

Generally speaking, a septic drain field is the region where effluents, which are liquid waste products produced by the system, are discharged into the soil, after which the liquid waste products seep through the soils around the area.

From a structural standpoint, drain fields are composed of many parallel pipelines that empties into a particular substrate that is buried several feet beneath the surface.
It is for this reason that being vigilant in protecting the septic drain field is so critical to success.
Because drain fields are so critical to the overall health of a septic system, you must take a proactive approach to prevent them from being damaged or destroyed.

Keep impurities out of the system that might clog it.
Never put grease, oil, or other scum-forming compounds into the septic system in order to avoid this situation from developing.
Instead, direct gray water to a sump pump that will be used solely for disposal.

Drain-field components are often only a few feet below ground level, making them accessible to things that might create a clog or other problems.

Among the other potentially harmful aspects are storage sheds and pavement that is too close to the drain field; anything that creates long-term weight stresses on drain fields should be avoided.

Keep biological activity at a high level.

It is possible to disrupt this activity by killing beneficial microorganisms and cause an imbalance in the environment, which may result in the cessation or reduction in the effectiveness of filtering and cleansing of effluent.

Detergents, pesticides, insecticides, fertilizers, and other potentially toxic compounds are examples of such agents.

On a regular basis, carry out the necessary “upstream” maintenance tasks.

However, even in the absence of dangerous chemicals being introduced into the effluent, the regular processes occurring inside a septic system might eventually result in the closure of drain fields.

Effluent filters, for example, should be cleaned and replaced on a regular basis.

Another important maintenance operation is the pumping out of accumulated sludge that has developed at the tank’s bottom.

Regular pumping of tanks, which may be as often as once a year, is necessary to prevent sludge from departing the tank and contaminating the drain-field lines and causing a backup.

How Does My Septic System Work?

Septic systems are marvels of contemporary science, allowing us to take use of the comfort of indoor plumbing without having to worry about how to dispose of our home waste in an effective and safe manner, which is a major benefit. Is it true that you are completely unaware of how your septic system functions? Understanding the operation of your septic system is essential to ensure that it is appropriately utilized and maintained in the future. Continue reading to find out more about what your septic system is and how it works:

Common Parts of a Septic System

A septic system is not necessary a complicated system, and each of its components works together to ensure that the waste generated by your family is properly kept and disposed of as soon as possible.

Septic Tank

Located beneath the earth on your property, a septic tank is a huge rectangular or cylindrical container composed of concrete, fiberglass, or polyethylene that collects and treats waste. They are used for homes that do not have access to a sewer system, which is most frequent in rural regions.

Drainfield

Septic tank sewage is channeled into your yard by a network of pipework known as the drainfield. Wastewater is normally held in the septic tank for two days before being discharged to the drainfield in the yard. This section of your septic system consists of lengthy lengths of pipe, referred to as “drainpipes,” that are punctured with small holes to allow for the release of waste. Drainfields can get possibly clogged if sediments build up and are not pushed away appropriately. It is possible that these obstructions are produced by an inadequately sized septic tank, infrequent pumping of the septic tank, or by a large amount of water.

The presence of greener grass over the drainfield

Unusual scents in your yard
And plumbing backups a squishy or muddy surface

If your drainfield becomes clogged, your complete septic system will be unable to work correctly. It is preferable to hire skilled underground service specialists to take care of the problem.

Pump Tanks

Even though pump tanks are not a required component of your septic system, they are highly suggested in order to guarantee that the system operates and maintains itself properly. Pump tanks are made up of the following components:

Pumping of effluents It catches sediments before they leave the tank, preventing them from being discharged into the drainfield, which helps to keep the drainfield from being clogged. Control floats in mid-air. It is connected to a control panel and sends signals to tell the panel when to turn the pump on and off. A high-water alarm has been activated. When the pump fails to function properly, this feature is activated to signal an excessive volume of waste in the septic tank. In most cases, it is found under the kitchen sink or in the garage.

The best course of action for homeowners who have a high-water alarm activated is to conserve water and have a professional septic system specialist assess the water levels.

Distribution Box

The distribution box, which is positioned between the septic tank and the drainfield, is meant to transport wastewater evenly across the drainfield lines, which are connected to the septic tank.

Leach Drain Field

Often referred to as the septic field, the leach field is a component of your septic system that accepts wastewater from the septic tank. It refers to the network of drainpipes, stones, and a layer of unsaturated soil that make up the drainage system. It moves trash into the soil, where it is eventually re-circulated back into the groundwater supply.

How a Septic System Works

All of these components work together to securely remove wastewater from your house and disperse it into the surrounding environment.

Specifically, it accomplishes this by relying on naturally occurring bacteria to break down the materials that are dumped into the septic tank. All of the things that you flush down the toilet or rinse down the drain fall into one of three categories:

Sludge is a term that refers to heavy things (such as solid food waste, excrement, and toilet paper) that collect at the bottom of a tank and accumulate there. Natural bacteria break down the particles in the tank over time, allowing them to be drained out of the tank as scum. These are lighter items (soaps, oils, and grease) that float to the surface of the septic tank
Liquid (Effluent) wastewater
And solid (Sludge) wastewater. Water that remains in the tank is pumped to the drainfield, which is located in the centre of the tank.

In the end, everything that goes into your septic tank will decompose and produce effluent wastewater, which will then be discharged into your drainfield. This wastewater has been processed (thanks to the bacteria) and is released down the drain pipes before being filtered by the soil. The wastewater is subsequently absorbed, treated, and dispersed by the soil until it finally seeps into the groundwater table. As a natural filter, the soil eliminates dangerous germs and viruses while also absorbing nutrients.

Septic System Issues

As previously stated, septic systems are susceptible to high water levels as well as clogged drainfields and leach fields. There are, however, several other septic-related considerations to bear in mind:

Clogs. The system between your house and the tank might get clogged for a variety of reasons, including clogs in the drainage pipes themselves. During this time, you’ll observe sluggish drainage and sewage backups in your home. The roots of a tree. Tree roots will naturally grow in the direction of water and moisture, and they will tend to wrap around or bore through any obstructions that stand in their way. There may be harm to your septic system if there are trees growing on or around it
This includes damage to the tank and pipes. Detergents are products that remove dirt and grime. Certain detergent solutions that contain high amounts of phosphate can foster the growth of algae in your tank, which can subsequently cause the perforations in the drain pipes to get clogged with algae.

In order to avoid problems with your septic system, it is important to be aware of the substances and products that you are releasing into your home’s plumbing system at all times. It is preferable to use phosphate-free detergents and cleaning products that are specifically intended for septic systems. These products degrade more quickly and will help to keep your system from being blocked in the future. Also, be mindful of what you are flushing down the toilet. Everything plastic and non-biodegradable, such as paper towels and sanitary tampons, is not intended to break down in a septic tank and should be avoided.

A regular pumping and maintenance schedule is a certain method to keep your septic system operating at full efficiency.

We are accessible 24 hours a day, seven days a week to answer your inquiries and handle your issues!

How a Septic System Works – and Common Problems

This Article Discusses Septic Tanks are a type of septic tank that is used to dispose of waste. Field Sizing and System MaintenanceProblems with the Leach FieldSystem Performance Questions and comments are welcome. See Also: Septic System Frequently Asked Questions Articles on SEPTIC SYSTEM may be found here. In locations where there are no municipal sewage systems, each residence is responsible for treating its own sewage on its own property, which is known as a “on-site sewage disposal system,” or septic system, more popularly.

One of the most commonly seen types of leach field is composed of a series of perforated distribution pipes, each of which is placed in a gravel-filled absorption trench.

SEPTIC TANK

The wastewater is collected in the septic tank once it has been discharged from the residence. Septic tanks are normally between 1,000 and 2,000 gallons in capacity and are composed of concrete, strong plastic, or metal, depending on the model. Highly durable concrete tanks, which should endure for 40 years or more provided they are not damaged, are the most common. Many contemporary tanks are designed with two chambers in order to maximize efficiency. Household wastewater is collected in the septic tank, where it is separated and begins to degrade before being discharged into the leach field.

In the tank, oil and grease float to the top of the tank, where they are known as scum, while solid waste falls to the bottom, where they are known as sludge.

Bacteria and other microorganisms feed on the sediments at the bottom of the tank, causing them to decompose in an anaerobic (without oxygen) process that begins at the bottom of the tank.
Solids and grease must be pushed out of the system on a regular basis in order for it to continue to function effectively.
Each gallon added to the tank results in one gallon being discharged to the leach field, leach pit, or other similar treatment facility.

A large amount of water delivered too rapidly to the tank may discharge untreated effluent, along with oil and particulates, into the leach field, where it may block the field and cause a backup.

Leach Field

When used properly, a leach field (also known as a “drain field”) is a series of perforated pipes that are typically buried in gravel trenches 18 to 36 inches below grade — deep enough to avoid freezing, but close enough to the surface that air can reach the bacteria that further purify the effluent (see illustration below). As little as 6 inches might separate you from the ground surface, depending on your soil type and municipal regulations. It is customary to cover the perforated pipes with approximately two inches of gravel and a layer of topsoil that is 18 to 24 inches in depth.

Grass is often sown above the ground.
The leach field is comprised of rows of perforated pipes in gravel trenches that are used to spread wastewater over a vast area in order to further purify it.

A bacteria-rich slime mat forms where the gravel meets the soil, and it is responsible for the majority of the water purification work.
Despite the fact that wastewater freezes at a far lower temperature than pure water, freezing is still a hazard in cold areas.
The leftover pathogens are converted into essential plant nutrients by these organisms, while sand, gravel, and soil filter out any solids that remain.

If the system is operating effectively, the filtered wastewater will return to the aquifer as naturally clean water that is suitable for human consumption at this stage.
Alternative systems may be permitted in situations when traditional leach fields are unable to function properly owing to poor soil conditions or a high water table.
Special systems may also be necessary in regions where there are flood plains, bodies of water, or other ecologically sensitive areas to protect against flooding.

SIZING THE LEACH FIELD

Using perforated pipes put in gravel-filled trenches, the drain field is sized to accommodate the number of beds in the house. In order for the system to function successfully, the leach field must be appropriately sized for the soil type and amount of wastewater, which is normally determined by the number of bedrooms in the house. In order for the liquid to seep into the soil, it must be permeable enough to do so. As a result, the denser the soil, the larger the leach field that is necessary.

Better to have surplus capacity in your system than to have it cut too close to the bone.
Septic tank backup into your house, pooling on the surface of the earth, or polluting local groundwater are all possibilities if the ground is incapable of absorbing the liquid.
Dense clay soils will not absorb the liquid at a sufficient rate, resulting in a backlog.
If the soil is mostly composed of coarse sand and gravel, it might drain at such a rapid rate that untreated sewage can poison the aquifer or damage surrounding bodies of water.
Alternative systems may be permitted in situations when traditional leach fields are unable to function properly owing to poor soil conditions or a high water table.

These systems sometimes cost twice or three times as much as a regular system and require significantly more upkeep. Near flood plains, bodies of water, and other ecologically sensitive places, special systems may also be necessary to protect people and property.

SEPTIC SYSTEM CAREMAINTENANCE REQUIRED

If you take good care of your system, you will be rewarded with years of trouble-free operation. Pumping the septic tank on a regular basis is necessary to remove the particles (sludge) and grease layer (scum) that have built up in the tank. The solids will ultimately overflow and spill into the leach field, decreasing its efficacy and diminishing its lifespan if this is not done. The rehabilitation of a clogged leach field is difficult, if not impossible; thus, constant pumping is essential!

Cooking fats, grease, and particles may also wash into the leach field if the tank is too small for the amount of water being used or if the tank is overcrowded on a regular basis.
Extra water from excessive residential consumption or yard drainage can overwhelm the system, transporting oil and particles into the leach field and causing it to overflow.
In addition, don’t try to complete a week’s worth of laundry for a family of five in a single day.
To minimize overburdening the system, the following measures should be taken:

Distribute your washing loads and other high-water-use activities across the week
And In the kitchen and bathroom, use low-flow appliances, faucets, and fixtures. Toilets, in general, are the source of the greatest amount of water use. Water should be diverted away from the leach field from the yard, gutters, and basement sump pumps.

In addition, refrain from flushing sediments, strong chemicals, and just about anything else down the toilet or sink other than biological waste and white toilet paper. Avoid using garbage disposals in the kitchen. If you really must have one, keep it for small non-meat bits only. Avoid flushing chemicals or paints down the toilet since many chemicals can destroy beneficial microorganisms or cause water contamination in the surrounding area. Avoid flushing the following down the toilet:

Grease, fats, and animal scraps
Paints, thinners, chemicals, and pharmaceuticals
And a variety of other materials sanitary napkins, tampons, and other supplies Paper towels and disposable diapers are examples of such products. Egg shells, coffee grounds, and nut shells are all good options. Antibacterial soaps and antibiotics are available.

It is preferable to put grass over the leach field and to refrain from driving or parking in the vicinity. Excessive weight placed on top of the drain field might compress the earth, diminishing its efficiency as a drain field. Drain pipes can also become clogged by trees and plants with invasive roots. In order to prevent damage to the leach field, the following measures should be taken:

Heavy machinery should not be driven, parked, or stored on top of the leach field (or septic tank). Placement of a deck, patio, pool, or any other sort of construction over the leach field is prohibited. Remove any large trees or other plants with deep roots from the leach field. Grass is the most effective groundcover.

Even with careful use and routine maintenance, however, leach fields are not guaranteed to survive indefinitely. It is inevitable that the soil will get saturated with dissolved elements from the wastewater, and that the soil will be unable to absorb any more incoming water. The presence of an odorous wet area over the leach field, as well as plumbing backups in the house, are frequently the first indicators that something is wrong. Many municipalities mandate septic system designs to incorporate a second “reserve drain field” in the case that the first field fails.

A well constructed and maintained system should last for at least 20 to 30 years, if not longer than that. After a few tears, the initial field will naturally heal and may be used once again when the situation calls for it to be. More information on Septic System Maintenance may be found here.

SEPTIC SYSTEM PERFORMANCE PROBLEMS

Poor original design, abuse, or physical damage, such as driving heavy trucks over the leach field, are the root causes of the majority of septic system issues. The following are examples of common situations that might cause a septic system to operate poorly: Plumbing in the home. obstructed or insufficient plumbing vents, a blockage between the home and the septic tank, or an insufficient pitch in the sewer line leading from the house are all possible causes. Sewage tank to leach field connection Septic tank and leach field blockage caused by a closed or damaged tank outlet, a plugged line leading to the leach field caused by tree roots, or a blockage caused by sediments that overflowed from the tank Piping in the leach field.

Most of the time, tree roots do not make their way through the gravel bed and into the perforated pipe.
Reduced flows, achieved through the use of flow restrictors and low-flow faucets and fixtures, may be beneficial.
Because of the seasonal high water table, the soil around the trenches might get saturated, reducing the soil’s ability to absorb wastewater.
This may frequently be remedied by adding subsurface drains or curtain drains to intercept the water flow into the leach field region and to lower the water table in the immediate area around the drainage system.
Likewise, see: In order to do a perc test, who should I hire?
Is It Possible for Septic Systems to Last a Lifetime?
Performing an Inspection on a Septic System When Is the Best Time to Take a Perc Test?
Examination of the WellSEPTIC SYSTEMView allSEPTIC SYSTEMarticles Return to the top of the page

Drain Fields 101

There are many people who are unfamiliar with the concept of septic drain fields (sometimes referred to as leach fields), and this might make them feel intimidated. In contrast to the tank, a drain field is often devoid of indicators. When there is no problem with the drain field, it is easy to overlook it. Because the drain field is the most expensive component of a septic system, it is unfortunate that this has happened. Understanding your leach field may help you extend the life of your septic system while also saving you a significant amount of money.

Is it possible for you to feel significantly more at ease with regards to owning and maintaining your septic system? Take a look at our ebook, which is provided below. This book is packed with in-depth knowledge about everything septic, yet it is also readily skimmed.

Drain Field Layout

A typical drain field is made up of three basic components: excellent soil, gravel, and perforated pipe (or tubing with holes in it). A drainfield operates according to a straightforward procedure. The effluent (waste from the septic tank) is collected by the perforated pipe and distributed among the aggregate; as the effluent trickles through the aggregate, it is absorbed by the soil. The soil will filter out the dangerous bacteria, which will then be reintroduced back into the water table. When the septic tank has completed its task of decomposing the waste, it overflows into the drain field.

Perforated pipes are pipes that feature holes towards the bottom that are not visible from the top.
As soon as the effluent is discharged from the pipe, it enters the aggregate.
The aggregate’s goal is to equally spread the effluent so that it may be absorbed by the soil in the same proportion as before.
If the soil beneath the stone becomes moist, the stone aggregate will begin to fill up the spaces between the stones themselves.
If the effluent level rises to or exceeds the level of the stone aggregate, there is no more suitable soil on the sides or bottom of the drain field to be found.
A drain field’s ability to operate is dependent on the quality of the soil.
The majority of these tests are concerned with your soil, namely with what it is made of and how well it drains.
Other soils, particularly those that are more clay-like, will not drain as effectively and may necessitate the construction of a bigger drain field to compensate for the lack of adequate drainage.
Now that we have a better understanding of how a drain field works, we can look at what may go wrong in one.

Drain Field Problems

When you notice patches of thick, lime green grass beginning to grow above your drain field, this indicates that the drain field is not operating properly. But, how did it get there in the first place? It everything comes down to the dirt. As the soil begins to fill up with effluent and sludge, the soil’s capacity declines, and effluent begins to leak out of the ground as a result. The easiest way to think about this is to imagine the drain field as a sponge filled with water. While filling up, a sponge takes up all of the available space in the sponge.

Due to the lack of a suitable location for the liquid to go, it rises.
To return to the sponge analogy, let us say It will hold water for as long as you keep filling up the sponge with water until it gets a chance to drain or dry up.
Not only that, but the soils may be permanently destroyed as a result of the contamination.
This is why it is so critical to ensure that you are not consuming more water than you require and that there is no extra water departing your home and entering your septic system at any time.
Sump pumps, in particular, may be quite hazardous.
A series of severe rains might cause irreversible damage to your irrigation system.
It doesn’t matter how little the trickle is now; it will cause problems down the line.

This is accomplished by driving across a field on a continuous basis or by moving massive construction trucks across a field.

In the end, it all boils down to the very important empty area in the drain field.

Heavy construction vehicles have enough weight to smash pipes on the job site as well as in the workshop.

If you want to drive near your drain field, it is really useful to be aware of the specific location of the field.

Inform your construction crew that driving is not permitted on the field.

Large construction vehicles may wreak havoc on your field because of their weight. if you are unsure of the location of your field, you may either have your pumper locate it during routine maintenance or you can request that an inspector come out and locate it for you.

Locating Your Drain Field

As a homeowner, it is in your best interests to be aware of the location of your drain field. Whether you have a septic check performed before to purchasing your home, ask if the inspector can include a map of the drain field in the report. Our reports will include a photograph of the area where the drain field is located. There are a number of reasons why this is beneficial to the maintenance of your septic system.

As previously said, you should take precautions to ensure that no one drives over your drain field. Many homeowners desire to plant trees, and this is true for building projects as well. Trees can cause significant damage to a drain field. This will be discussed in greater detail later on. You want to be certain that no surplus water is dripping down your drain field or into your basement. In the long term, any precipitation from a roof leader or excess runoff will cause harm to the system. As part of routine maintenance, a reputable pumper will probe your field to determine how much moisture is currently there
It is a good idea to keep an eye out for any indicators of malfunction. A strong possibility that sewage is being discharged from the drain field exists if the drain field begins to seem to have sections of dense, brilliant green vegetation

Drain Fields and Trees

The development of trees is another important component in the health of your septic system. Many times, individuals may plant trees on top of your irrigation system or extremely close to it if they do not know where your field is. We may see this during inspections and consider it a red signal. The roots that extend into the field are the primary source of worry. You may assume that doing so would assist with drainage, but it really has the opposite effect. The roots of the trees will penetrate the pipes and create a “root ball” around the pipes.

The sludge is subsequently trapped between the hairs of the seal, resulting in a watertight closure.
Inevitably, the region immediately preceding the halt absorbs the entirety of the liquid and begins to saturate.
It is recommended that any trees within a 10-foot radius of any septic system be removed.
The greater the distance between a tree’s location and any component of a septic system, the better.
There is still a lot to learn about your specific drain field and how to manage it, so keep reading.
In the meanwhile, have a look at our booklet, which will equip you to cope with any problem you may encounter as a septic system proprietor.

The Drainfield

The drainfield is a network of perforated pipes (or “laterals”) laid in gravel-filled trenches or beds. After solids settle in the septic tank, the liquidwastewater (oreffluent) is discharged, either by gravity or pressure,to an absorption field, also known as a drainfield or leachfield (seediagram of septic system/drainfield layout).NOTE:In most gravity systems the wastewater first flows into a distribution box (d-box) or tee, which then disbursesthe effluent equally among the trenches in the drainfield, which is where the final treatment takes place.Effluent trickles out of the pipes, through the gravel layer, and into the soil where further treatment occurs.

Thesoil filters the wastewater as it passes (or “percolates) through the pore spaces and the soil microbes treat itbefore it eventually enters the groundwater.

The size and type of drainfield depends on the estimated daily wastewater flow and local soil conditions.

The Soil

The soil under the drainfield is responsible for the ultimate treatment and disposal of the septic tank effluent once it has been treated. Upon entering the soil, organisms in the soil purify and decontaminate the effluent before it percolates downhill and outward, eventually entering groundwater or surface water. This is because different types of soil have different capacities for treating wastewater. For example, clay soils may be too tight to allow much wastewater to pass through, whereas gravelly soils may be too coarse to give much treatment.

Replacement (Reserve) Area

Every new residence or facility served by a septic system is expected to have a designated replacement or reserve space. This is a specified location appropriate for a new drainfield and must be handled in the same manner as your existingdrainfield. A reserve area should have been declared as part of the permission procedure for any sewage system that was constructed after 1980. Once a septic system has failed, it is too late to remedy the problem by pumping your tank. A new drainfield will haveto be built at a different site.

For further information, visit Landscaping Your Drainfield and Choosing a Drainfield Location.

Do These Things

Find out where your drainfield and replacement area are before you start. It is much easier to safeguard anything when you know where it is located. Locate Your Drainfield. Heavy machinery should be kept away from your drainfield. There should be no parking or driving over the drainfield by cars or heavy equipment
This might cause cracks in the pipes. If the area is accessible to automobiles, cattle, or heavy equipment, put up a barrier. Reduce your water consumption to a bare minimum. Drainfields are not capable of carrying an endless amount of water. It is impossible for the system to drain and filter effluent when there is more water than it can absorb. This results in the effluent reaching groundwater. Water should be diverted away from the drainfield. Roof runoff and drainage ditches can saturate the soil, causing it to become waterlogged. It is most effective for drainfields to operate when the soil underneath the drainfield is not waterlogged. Maintain a minimum distance of 30 feet between trees and bushes and the drainfield. Please keep in mind that some soil conditions may dictate that plants be placed at an even greater distance from the drainfield.) Drainfields are a common habitat for trees and plants because their large root systems are attracted to and develop in moist places. Drain pipes might get blocked and damaged as a result of this. Landscape Your Drainfield. Over the drainfield, only grass or shallow-rooted plants should be planted. This will prevent soil erosion from occurring. Protect the area where your replacement will be installed. It is possible that this is the only spot with appropriate soil conditions in the event that you need to rebuild, repair, or expand the drainfield. All of the solutions made above are applicable to the replacement area as well

Don’t Do These Things

Don’t construct anything on top of your drainfield. Patios, carports, and other constructions are included in this category. It is possible that you will cause harm to the drainfield. Do not construct a road over the drainfield. Drainfields require air in order to operate correctly. Biological breakdown and treatment of sewage need the use of oxygen. Make sure you don’t dig up your drainfield. It is possible that the pipes will be damaged
Large animals and livestock should be kept away from the drainfield. Soil compaction hinders oxygen from getting into the soil and water from moving away from the drainfield
It also causes erosion. It is not permissible to apply landscaping plastic over the drainfield. Air is required for the drainfield to work properly
Otherwise, it would fail. Planting a food garden over a drainfield is not recommended. As a result, there is the chance of food contamination. Installing an irrigation system in the drainfield is not recommended. Additionally, the irrigation system should not drain toward the drainfield.

Please call a trained septic specialist for additional evaluation if you detect any of the following indicators of a potential failure or if you have any reason to believe your system is experiencing issues. Please contact Thurston County EnvironmentalHealth at 360-867-2673 if your septic system should fail.

Odors, surface sewage, or damp areas in the drainfield region are all signs of a problem. Backups from the plumbing or septic tank (which are often a dark liquid with a foul odor)
Fixtures that take a long time to drain
The plumbing system is making gurgling sounds. Your drainfield may be failing if you have a well and tests reveal the presence of coliform (bacteria) or nitrates in the water from it. Even in dry weather, there will be a pool of liquid over the drainfield. This might imply that an excessive amount of wastewater is being transported upward via the soil rather than downward.

Landscape Drainfield Planting Suggestions and other landscaping information are welcome. Identifying and Locating Your Drainfield How to determine the location of your drainfield
Drainfield Frequently Asked Questions Drainfields are frequently asked questions, so here are some answers. Request for Drawing Permit Information for Record Drawings

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