Why Is It Bad To Have Washer On Septic Tank? (Solution)

Washing machines use a lot of water, and doing many loads of laundry in quick succession can overwhelm your septic tank system. If too much wastewater flows into the tank in a short space of time, the tank may be forced to release waste into the drainfield before it has been processed.

  • Perhaps the number one appliance for leading to the most septic tank system fails is the washing machine. It doesn’t matter if you have an energy-efficient model that uses less water, it is the buildup of lint that makes its way to the septic tank that can cause the system to fail.

Will a washing machine hurt a septic tank?

Normal washing machine use will not damage your septic system, but it is possible to do damage by committing common mistakes.

Is laundry water bad for septic systems?

A septic tank is only made to handle so much water on a given day. If you do multiple loads of laundry, then you can overload the septic system and not give the tank enough time to clear out excess water before the next load of laundry begins. Ideally, you want to limit laundry to a single load per day.

How often can you do laundry on septic?

Do spread laundry use over the week rather than many loads on one day. While it might be convenient to do so, dedicating an entire day to doing laundry will put a severe strain on your septic system. Consider connecting your laundry waste to a separate waste system (dry well or seepage pit).

How many loads of laundry can a septic tank handle?

Most septic systems 10 years old or older have a 600-900 square-foot absorption area. Spread it out and do one load a day for several days. A typical washing machine uses 30 to 40 gallons of water per load. If you do 5 loads of laundry in one day, that pumps at least 150-200 gallons of water into your lateral lines.

How do you clean a washing machine with a septic tank?

White vinegar disinfects and sanitizes, and the acidity helps to eat away built-up residue. Plus, as the vinegar drains away, it can clean the insides of your pipes as well! White vinegar also has deodorizing properties, so it will get rid of bad odors in the basin and in your septic system.

Can you use bleach in laundry with a septic tank?

Moderate use of bleach will not throw your septic system out of balance. Moderate use is the amount used in one normal size load of laundry (3/4 cup) or the amount used in an application of toilet bowl cleaner.

Are long showers bad for septic systems?

Washing frequent, small loads of laundry or taking exceptionally long showers every day is all it takes to overload your septic system with too much water. The primary treatment tank needs time to break up solids before partly-treated water can enter the drain field.

What should you avoid with a septic tank?

You should not put these items into your commode:

  • Cat litter.
  • Coffee grounds.
  • Cigarette butts.
  • Dental floss.
  • Disposable diapers.
  • Earplugs.
  • Sanitary napkins or tampons.

Are Tide Pods OK for septic systems?

While these prepackaged liquid detergent pods are conveniently wrapped and easy to use, they do carry an expensive price tag. Most pods are considered safe for septic tank systems, though, so if using caution and not minding the price tag, these pods may be a good choice for your use.

4 Ways to Protect Your Septic Tank While Doing Your Laundry

If you live in a property that is serviced by a septic tank system, you may have heard horror stories of catastrophic floods brought on by washing machines. Fortunately, most contemporary septic systems are well capable of managing wastewater from your washing machine. However, reckless usage of your washing machine can still cause major problems in your septic tank and lines. Washing machines may cause major damage to septic systems, thus it is best to err on the side of caution to avoid this.


It is dependent on colonies of helpful bacteria to keep septic tanks running smoothly.

Phosphates and surfactants are common ingredients in laundry detergents.

  1. Detergents are diluted in laundry water so that they do not kill bacteria under normal conditions, but using too much detergent can expose bacteria to toxic amounts of these chemicals, which can be harmful to them.
  2. When you use too much washing powder, the undissolved powder will clump together inside your septic system, causing it to back up.
  3. As long as you use the proper quantity of detergent with each load of laundry, you should not have any of these issues to contend with.
  4. Regularly clean the lint filters.
  5. clumps of lint can escape from the filter and block the septic system if they get stuck in the septic pipes.
  6. If this happens, the septic system can become severely clogged.
  7. Organic fibers in the lint, such as threads from polyester or nylon clothes, will be digested by the bacteria in the tank, while non-organic fibers will be left to settle at the bottom of the tank.


Washing machines consume a lot of water, and washing several loads of laundry in a short period of time might cause your septic tank system to overflow.

Consequently, drainfield obstruction and pollution can occur, resulting in major issues that are typically expensive to treat.

With a tank that is large enough to accommodate many average-sized loads in a day, you should have no trouble washing numerous loads each day.


Another option is to get a modern washing machine, which will prevent your tank from being overloaded with laundry water.

Although they are more expensive, a recent washing machine will allow you to do laundry more frequently without having to worry about septic system difficulties.

Please call the septic system professionals atPete’s Outflow Technicians for professional guidance and recommendations if you have any more concerns about how to safeguard your septic system.

Laundry With A Septic System: 5 Tips to Prevent Septic Trouble.

Yes and no, to be honest. Normal washing machine use will not harm your septic system, however it is possible to cause damage to your system by making typical errors while using your washing machine. Fortunately, by following five basic guidelines, you can ensure that your septic system is properly maintained and that you avoid making costly mistakes. 5 Tips for Keeping Your Septic System Running at Peak Performance 1. Don’t save all of your loads for one day; spread them out. Multiple loads should be spread out over several days in order to lessen pressure on your septic system and drainfield.

  • The high volumes of water generated by many washing loads might spell disaster following heavy rains, causing your soil to get saturated above its maximum saturation capacity.
  • When you’re doing numerous loads of laundry, the cost may rapidly mount up.
  • Instead of powdered detergent, use liquid detergent.
  • Clay, a frequent filler, has the potential to do significant damage to a properly working drainfield.
  • 3.
  • The use of normal amounts of bleach and detergents is safe for your septic system to handle.
  • The importance of beneficial microorganisms cannot be overstated.


Install a lint filter on the discharging water line of your washing machine to trap excess lint and keep it from entering your septic system, which can cause problems.

Lint is a typical source of serious obstructions and back-ups in plumbing systems.


Generally speaking, filthy clothing are acceptable.

A substantial amount of surplus soil entering your septic system should be avoided at all costs.

Observing these five basic guidelines can help to ensure that your septic system is safe, efficient, and worry-free. If you ever have a problem, you may contact Stamie E. Lyttle Co. by clicking on the link below, which is available 24/7 – 365!

Washing Machine Effects on Septic Tanks

  • Post a QUESTION or COMMENT regarding septic system maintenance in situations when a washing machine is utilized and the water drains into a septic tank.

InspectAPedia does not allow any form of conflict of interest. The sponsors, goods, and services described on this website are not affiliated with us in any way. A comparison between clothing washers and sewer systems is shown. Are clothes washers or “washing machines” permitted in homes that are connected to a privately owned sewage treatment system? What precautions should be taken to preserve the septic system from being overburdened with water, clothing lint, or laundry detergents? Here’s how to extend the life of your septic tank.

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Washing Machine Draining into Septic System

  • And the EFFECTS of LAUNDRY BLEACH on SEPTIC are all to be minimized.

Does a washing machine overload and harm the septic system?

With a standard septic system in excellent operating order, the volume of water generated by the usage of a household washing machine should not pose an issue. It was previously addressed atDishwashers that there are several circumstances in which you should avoid emptying washing machine output into the septic system:

  • If the absorption system (leach field or drainfield) has a restricted ability to absorb wastewater, then the drainfield capacity restrictions are applicable. Drainfields on the verge of failure: If the absorption system is showing signs of failure, such as effluent coming to the surface of the land or backing up into the structure (you will still need a septic field assessment and repair), you should contact a professional.

Steps you may take to reduce the potential negative impacts of increased wastewater loads generated by washing machines are discussed below. We also examine the effects of detergents and soaps when using a clothes washer that is linked to a sewer system or a drywell, which are discussed below.

Does Washing Machine Detergent Harm the Septic Tank or Septic System Drainfield?

In most cases, the volume of detergent from a domestic clothes washer entering the septic system is so little that it is extremely dilute when it enters the septic tank, dilute enough that it will not affect the septic tank microorganisms under normal conditions of residential dishwasher usage. Machine for washing clothes Inside the machine, detergents do not produce a significant amount of suds. Cleansing them requires the use of detergents as well as high water temperatures as well as considerable time spent churning the contents of the clothes washing machine.

Surfactants are responsible for the effectiveness of detergents in removing dirt particles off of a surface (a dish in the dishwasher or a shirt in the washing machine).

What laundry detergents or soaps should we use in a Clothes Washing Machine connected to a septic tank or to a Graywater System?

In most cases, the volume of detergent from a domestic clothes washer entering the septic system is so little that it is extremely dilute when it reaches the septic tank, dilute enough that it will not affect the septic tank microorganisms at regular levels of household dishwasher usage. Laundry machine for laundry. Inside the machine, detergents do not produce a large amount of suds. To clean them, they rely on surfactants, hot water, and agitating the contents of the clothes washing machine for an extended period of time.

When it comes to moving dirt particles off a surface, surfactants are what make detergents so successful (a dish in the dishwasher or a shirt in the washing machine). These compounds have the potential to be severe environmental pollutants of ground water and surface water.

How to minimize the possible clogging or other effects of laundry soaps on the septic system

The tank and drainfield of a private septic system can be safeguarded from clogging as a result of the excessive use of detergents. Even if the wastewater from a building is discharged into a public sewage system, there may be issues about detergent blocking the system’s drainage system. Encourage people to follow these recommendations at a laundry facility servicing a residential apartment complex such as the one seen on the left (Bronx, New York), and you’ll be helping to keep sewage drains unclogged.

  • Use only the amount of powdered laundry or dishwashing detergent that is absolutely necessary to complete the job. Powdered laundry detergent that is used in large quantities can often fail to dissolve in the washing machine. Laundry detergent in a liquid form: It is safer to use liquid laundry detergent if you are not the one who will be running the clothes washing machine. “Budget” powdered laundry detergents include higher concentrations of fillers (including, in some cases, montmorillonite clay), which enhance the likelihood of system drainage or drainfield obstruction. The use of high-phosphate laundry detergents may be a contributing cause to drainfield degradation. The following liquid detergents are recommended: Clothes washers that are linked to or emptying into any onsite disposal system, such as a septic tank, cesspool, or drywell are preferred over those that do not.

The following measures may relieve the water volume load on septic fields from the washing machine:

  • Make use of washing detergent in liquid form. In order to avoid septic system clogs, use a liquid laundry detergent rather as a dry soap powder. When excessive volumes of dry laundry soap powders are used, some experts say that the septic system becomes clogged in the pipes, septic tank, and drain field. Install a lint filter on the washing machine water drain line to prevent lint from entering the septic tank and fields. If you are utilizing a drywell to accept washing machine discharge waters, you should also install a graywater filter ahead of the drywell to prevent lint from entering the drywell. SILICONE FILTERS SEPTICGREENWATER
  • Install a separate drywell to collect water from the washing machine drain, as well as from the dishwasher and other graywater if necessary. Spread out the usage of the washing machine over longer periods of time – for example, washing loads in the morning and at night rather than running one laundry load after another – to make it more efficient. Because of this periodic “dosing” of the septic system or drywell, the absorption system has more time to recover between washes. Cleaning out your septic tank on a more frequent basis than the recommended timetable will help to extend the life of your drainage field. It is anticipated that this will allow the drainfield to better absorb the additional volume of wastewater created by clothes washing. A family that uses their washing machine frequently will find that any other precautions that safeguard the drainfield’s ability to absorb water, such as avoiding flooding the fields with surface runoff, become increasingly critical.
See also:  What Pipe Size Is Required For Effluent System In Septic Tank? (Solved)


Effects of Household Bleach on the Septic System

The average amounts of Bleachat consumption in a home should not be detrimental to the septic system.

  • Braida, Washington, Say Kee Ong, William L. Smith, and James W. McCabe are among the authors of this work. “Septic tank systems are affected by the presence of adsorbable organic halides from bleached laundry.” Environmental Toxicology and Chemistry 17, no. 3 (1998): 398–403, published online in 1998. In order to determine the destiny of adsorbable organic halide (AOX) generated by the use of home bleach during laundry in a septic system, an investigation was carried out in the laboratory. Septic tanks and leachfield systems were used in the experiments, which were carried out on a laboratory size. The addition of feed water comprising 20% bleached or unbleached laundry wash water had no effect on the performance of the septic tanks or the leach fields in this study. Chemochemical oxidation demand (COD) and total organic carbon (TOC) clearance rates were in the 90 percent range when measured through the septic systems. Adsorbable organic halide from unbleached laundry wash water with concentrations ranging between 0.13 and 0.21 mg/L appeared to be eliminated in the septic tank but not in the leach field, according to the results of the study. An approximate 43 percent clearance rate of AOX was observed while using unbleached clothes wash water as a control. The total clearance rate of AOX created by the use of sodium hypochlorite in bleached laundry wash water, on the other hand, was between 87 and 94 percent. In the septic tank, approximately one-third of the AOX had been removed, with the remaining AOX having been removed in the leach field. In the leach field, an analysis of the septic tank sludge and the soil revealed no buildup of AOX due to the usage of hypochlorite, and the AOX was most likely eliminated by biodegradation and/or chemical degradation.

Reader CommentsQ A

Donna: There are several potential factors, including:- a partially clogged drain that is unable to cope with the increased amount of wastewater flow – a faulty septic system or cesspool that backs up when a big amount of water is being discharged into it When I wash my clothing, why does the water in my tub, shower, and toilet back up? I don’t believe that liquid laundry detergent would be the source of a white greasy clog in a sink drain. Fats or oils, for example, from cooking, are more frequently the culprit.

  1. We have a septic system in place.
  2. When a snake is used, large gobs of a white substance appear to be producing an obstruction in the system.
  3. It was suggested to us by a friend that it may be the washing detergent.
  4. Is it conceivable that the problem is caused by the washing detergent?
  5. However, I have an aseptic tank and do not want to colour my clothing in the washing machine.
  6. Andy, Despite the fact that there are caustics that can break up soap scum, they are damaging to the environment and, more importantly, they are probably outlawed in your region.
  7. In the meanwhile, pumping and cleaning the present installation, as well as manually disrupting its bottom layer, may be able to provide some temporary improvement.

It is, in fact, a plastic drum with no bottom attached.

Is there a chemical that I can use to remove the soap scum from the drum?

Smutty, thank you for posing such an excellent question.

Meanwhile, stick to liquid detergents if at all possible, and be sure to use no more detergent per wash load than the manufacturer’s suggested amount.

Is there a list of detergents that are suggested for aeration systems?

InspectApedia provides marriage counseling services.

The use of soap down the drain is unlikely to explain a septic tank or system failure unless someone is physically dumping bottles of soap down the drain.

I’m using the biodegradable detergents and disinfectants on my septic system as well.

Are there too many bubbles entering the septic tank?

Ron, I agree that it took three days of “perseverance.” The most likely scenario in which clothes *dryer* lint from a typical clothes dryer would enter the septic system would be if someone made the mistake of pulling lint out of the dryer and flushing it down the toilet, as described above.

How could dryer lint possibly find its way into your septic tank, let alone your drain field.

A ventless washer/dryer combo seems like a horrible idea to me since dryer lint might potentially end up in the septic field, which I don’t want to happen.

I’ve started producing my own liquid laundry detergent in order to save money and be more environmentally conscious.

Fels Naptha soap, which must first be “melted” in hot water, washing soda, and borax are all used.

However, we have been experiencing a foul odor (which is sporadic rather than consistent) that smells like sewage for perhaps 4 months, possibly longer.

However, the toilet would not flush at all after that.

I got the tank cleaned (and you know how expensive that can be).

Recently, the firm that has a “contract” to examine our tank came out and reported everything was good (we were not at home at the time of their visit.).

(This is quite inconvenient).

And, if so, what should I do to get rid of it?

Oh, and the aerator was causing us some problems (yep, it was still acting up days after they examined it), but after we had it running again, the scent was unbearably strong and offensive.

While I don’t have a lot of money to throw about on this, I’m desperate to find some answers.

Alternatively, view the FAQs on WASHING MACHINESSEPTIC SYSTEMS, which were originally put at the bottom of this page. Alternatively, consider the following:

Don’t Flush Articles for Sewage Grinder Pumps, Toilets, Septic Systems, Drains

  • CHEMICALS to AVOID Using in Septics
  • DISHWASHERS versus Septics

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Septic System

You need to know how many loads of laundry you may do each day without causing damage to your septic system since the amount of water that flows into your septic system on a daily basis might affect how effectively it performs. Water used in excess can flush undigested materials and particles out of your septic tank and onto the drain field, where they are not intended to be placed. A 1000-gallon septic tank is designed to handle a total daily water use of 250 gals. You also run the danger of overflowing your drain field if you do anything more.

Families in the United States wash around 300 loads of laundry every year, according to estimates.

Newer, high-efficiency washers can use as little as five to fifteen gallons of water each load, depending on the model.

In most cases, if you have a high-efficiency washing machine, you shouldn’t be concerned about the amount of loads you wash each day until you discover difficulties such as flooding in the drain field or backups in your plumbing.

Laundry Tips to Ensure Septic Systems Work Properly

The following laundry instructions are for those of us who use standard washing machines and want to keep the healthy bacteria balance in our septic systems.

  • Maintain a strict limit on the amount of loads you wash every day. In addition to the problems listed above, excessive volumes of water can result in backups, floods, and sewage leaks. Keep away from busy periods such as when the family is getting ready in the morning or while the dishwasher is running. Do your laundry on an as-needed basis rather than in one sitting. A certain amount of time is required for your septic system to separate waste solids from liquids and treat the waste. A solids problem might occur when you do multiple loads of laundry in a row
  • Solids can accumulate in your drain field. Make a point of just doing complete loads of laundry rather than half loads. Remember to put the washer to the smallest setting if you are only washing a few items at a time.

If you suspect that your septic system is not operating properly or if you are unsure of the maximum amount of water that should be used by your system, consult with a professional such as Drain Doctor’s Rooter and Septic Service. The quantity of water that your septic system can manage is determined by the size of your septic tank, the amount of water that your household uses, and the overall quality of your system.

An expert can assist you in avoiding difficulties by assisting you in setting water conservation goals. Read this article as well if you are interested in repurposing the water from your home to water your lawn and garden.

Septic System Do’s and Don’ts – Septic Tank and Septic System Services, Repairs, Installations in New Jersey

Skip to the main content MenuClose Take note of these suggestions on what to do and what not to do if you have a septic system for waste management at your residence or place of business. A decent rule of thumb is: if you haven’t eaten it, wouldn’t eat it, or couldn’t eat it, don’t put anything in the septic system.

Septic System Do’s

  • Spread out your laundry usage over the course of the week rather than doing many loads on one day. However, while it may be handy to dedicate a whole day to laundry, doing so would place a significant strain on your septic system. Consider connecting your laundry trash to a separate waste disposal system to save money (dry well or seepage pit). While it is not generally essential, it will minimize the pressure on the regular system and allow a mediocre system to survive. Laundry loads should be spaced out and only complete loads should be washed. In order to complete one load of laundry, 47 gallons of water are required. It makes a significant difference to your septic tank if you just do one load every day rather than seven loads on Saturday. In addition, front-loading washers consume less water than top-loading washers
  • Liquid laundry detergent should be used. Clay is used as a ‘carrier’ in powdered laundry detergents to transport the detergent. This clay can expedite the building of sediments in the septic tank and perhaps fill the disposal area
  • Reduce the number of home cleaners (bleach, strong cleansers, and similar harmful compounds)
  • And reduce the amount of fertilizer and pesticides used. Home sewage treatment systems are not adversely affected by the presence of detergents, food waste, laundry waste, and other household chemicals in reasonable proportions. Don’t forget to keep a permanent record of where the most important sections of your septic system are situated in case you need to do future maintenance (such as septic pumping service or field repairs)
  • Schedule septic pumping service on a regular basis. Every two to three years, or if the total depth of sludge and scum surpasses one-third of the liquid level of the tank, the contents of the septic tank should be drained out. It is possible that the sediments will be transferred into the absorption field, or leach field as it is more frequently known, if the tank does not receive regular cleaning. A rapid blockage ensues, which is followed by a premature failure, and eventually the leach field must be replaced. In comparison to rebuilding your leach field, pumping your septic tank is less costly. Instead of using the inspection ports located above the inlet and exit baffles, insist on having your septic tank cleaned through the manhole in the center of the top of your septic tank. Don’t forget to keep track of your septic pumping service and septic system maintenance. When at all feasible, conserve water by using water-saving gadgets. Reduced flush toilets and shower heads are readily available on the market. Install water fixtures that consume little water. Showerheads (2.5 gallons per minute), toilets (1.6 gallons), dishwashers (5.3 gallons), and washing machines are all examples of high-volume water users (14 gallons). A family of four may save 20,000 gallons of water per year by putting fixtures such as these in their home. Inspect any pumps, siphons, or other moving elements in your system on a regular basis
  • And Trees with substantial root systems that are developing near the leach field should be removed or prevented from growing there. Planting trees around your leach field is not recommended. Branches and roots from trees in close proximity to the absorption lines may clog the system. Check your interceptor drain on a regular basis to verify that it is free of obstructions
  • And Run water routinely down drains that are rarely used, such as sinks, tubs, showers, and other similar fixtures, to prevent harmful gases from building up and producing aromas within
  • All drainage from the roof, cellar, and footings, as well as surface water, must be excluded from the drainage system. It is permissible to discharge drainage water directly to the ground surface without treatment. Check to see that it is draining away from your sewage treatment facility. There should be no drainage of roof downspouts into the leach field. When water softeners are used, the backwash contains salt, which might harm your leach field. In order to protect your well and precious plants, you should discharge this waste into a separate system or to the ground surface. Make sure that swimming pools (above-ground or in-ground) are kept away from the leach field.
See also:  What Can You Hook Into A Septic Tank? (Correct answer)

Septic System Don’ts

  • Garbage disposals should be avoided. In addition to increasing the accumulation of solids in the septic tank, garbage grinders also increase solids entering the leach fields and pits, which are both detrimental to the environment. Their downsides exceed the convenience they give, and they are thus not suggested for houses that have their own sewage treatment systems in place. If septic tanks are utilized, the capacity of the tank should be raised, or the discharge should be routed via a separate tank first, known as a garbage tank. The system should discharge into the septic tank or into a separate leaching system rather than straight into the current leaching system once it has been installed. For those who have a garbage disposal, make sure to pump it more frequently– or, better yet, compost your kitchen wastes altogether. Disposals result in the accumulation of fats, particularly from meat and bones, as well as insoluble vegetable particles. Here are a few items (this is not an exhaustive list) that should never be dumped into a septic tank or leach field:
  • Cigarette butts, disposable diapers, sanitary napkins, tampons, handi-wipes, pop-off toilet wand scrubbers, garbage, condoms, hair, bandages, and so forth
  • Ragstrings, coffee grounds, paper towels, anti-bacterial soaps – biodegradable soaps only
  • No “biocompatible soaps”
  • Ragstrings, coffee grounds, paper towels Dead fish or small animals
  • Rubber, plastic, or metallic things
  • Hard toilet paper – soft toilet paper is preferable for the tank.
  • Excessive use of chlorine and chemicals should be avoided – (1 part chlorine to 5 parts water makes an effective bacteria cleaning spray)
  • Allowing water conditioning backwashes or outflow from water softeners, purifiers, sanitizers, or conditioners is not recommended. Dehumidifiers and air conditioners release moisture
  • Discharges from hot pools and jacuzzis Water from leaking devices, such as toilets that are difficult to detect. Make a habit of color testing the toilet on a regular basis to look for septic system issues. Keep dirt and inert materials to a minimum. Clothes, fruits, and vegetables that have been soiled should be dusted off before washing. Even diluted, do not dispose of chemicals from x-ray equipment since they will condense and harm the subsurface environment, which is against the law. Avoid using hair conditioners that include heavy oils – if you do, please let us know so that we may make adjustments to compensate with more or alternative bacteria (or avoid using them totally if they are not biodegradable). Keep grease from the kitchen OUT of the septic system. It is difficult to break down and might cause a blockage in your drain field. In order to dissolve these oils, there are currently no known solvents that are safe for use in groundwater. Chemical additions for septic tanks are not advised. Household systems cannot function properly if additives are used. In addition, excessive use of these chemicals may cause the waste from your toilet to be released into your septic tank, causing your system to fail prematurely. It is possible that some additives will damage your groundwater. In order for your septic system to function properly, no extra additives are required. Many of those that market their services as “solid waste removal” really deliver on their promises. During the solids removal process, the solids are transported to a disposal field. When the solids reach the disposal area, they shut up the space and cause the system to malfunction. Furthermore, although it is not harmful, it is not required to “seed” a new system with yeast or other organisms. Even routinely disposed of human waste includes enough bacteria to populate the septic tank, and other microorganisms are already in the soil and stones of the disposal region

Are Washing Machines Bad For Septic Systems? If not, What?

If you have a septic tank, it’s probable that you’ve thought about the influence your washing machine has on your septic system at some time and asked yourself the question – Are washing machines harmful for septic systems? The good news is that washing machines and septic tanks may perform successfully together without causing any damage to the septic system or its components. However, as is always the case with septic tanks and packaged sewage treatment plants, there are a few more considerations to be aware of if you want to make the most of your washing machine/drainage combo to its full potential.

Septic systems are not harmed by the use of washing machines.

Are Washing Machines Bad for Septic Systems?

No. Washing machines are completely safe to use in conjunction with a septic tank. To be on the safe side, it is recommended to exercise caution. Having an excessive amount of greywater seeping out of your waste drains and into your soakaway might cause a variety of problems. If you overburden your drainage system, you run the danger of wiping out the beneficial bacteria in your tank, or you run the chance of flooding your tank. In normal circumstances, water flooding may be quite unpleasant, but wastewater flooding is a particularly unpleasant experience.

  • What you put in your washing machine
  • How often you use your washing machine
  • And so on.

Maximum Daily Washing Machine LoadsFor Septic Systems

If you use your washing machine on a regular basis, you will unavoidably be putting greater strain on your septic tank and soakaway system. However, there is no definite upper or lower limit on the number of loads of laundry that should be done every day in order to minimize such harm. The amount of laundry needed will vary from household to household. It is more likely that an active family will create larger and heavier loads than example, a retired couple or an individual living alone in their own home.

One of the most important things you can do is to spread out how often you wash your clothes.

Decrease the number of wash loads you run each week, and you’ll reduce the amount of power and water you consume as a result, of course.

This might result in cheaper expenses for you in the long run, as well as having a good influence on the environment in your neighborhood. A great, conscience-satisfying option to consider.

Recommended Wait Time Between Using Your Washing Machine

Our clothes washing routines and requirements are unique to everyone of us. In terms of how long you should wait between washing machine loads, the good news is that there are no formal rules or recommended averages available. You should exercise caution, though, because the amount of greywater you pump into your tank in a short period of time, as previously said, is significant. A large amount of water discharged in a short period of time might disrupt the sediments in your septic tank, weaken the beneficial bacteria, and even block your septic system, making it more difficult for your wastewater to escape down the soakaway.

Reduce The Volume Of Washing Machine Water Entering The Septic System

It is recommended that you avoid using the washing machine at the same time as anything else that consumes a lot of water. A family member taking a shower or emptying a bath tub while you’re doing a large load, for example, is not going to be pleased with your septic tank. Your septic tank chambers and soakaway are only capable of dealing with a certain amount of waste at a time. As a result, when using your washing machine, think about the water you flush or drain away from it. It is possible to become quite congested in a short period of time if you do not take action.

Choosing a Septic Safe Laundry Detergent

Concerns have been raised in the past about the laundry detergents we use in our washing machines and whether or not they are safe to use in septic tanks. This was a response to concerns about the harm that chemicals, such as phosphates, present in laundry detergents can do to septic tanks, including weakening and even killing the beneficial bacteria that exist in them.

Why Are Phosphates Bad for Septic Systems?

Phosphates are detrimental to the operation of any septic system. This is due to the detrimental impact that they have on the population of microorganisms or bacteria that live in your tank as a result of their presence. Microbes are required to break down the waste in your tank, which means that if you flush too much phosphates through your system, you will have a detrimental influence on the health of your septic system. As well as being hazardous to human health, phosphoates are also damaging to the environment.

You should thus refrain from using phosphate-containing solutions in order to prevent your soakaway from inflicting any form of long-term damage to your lawn.

Choosing The Right Laundry Detergent For Your Washing Machineand Septic System

Whether you use powder, pills, or liquid capsules, the major brands of detergent now on the market are devoid of harmful phosphates and, as a result, are safe to use in conjunction with a septic tank. Fortunately, new regulations in the United Kingdom prohibit detergent manufacturers from including phosphates in their products. This applies to dishwasher capsules and tablets as well as dishwasher capsules. As a result, you shouldn’t have too much trouble locating a washing powder or similar that is septic safe.

It is possible to find products that are nearly chemical-free on the market. A solid rule of thumb to follow in this situation is that if something is marketed as environmentally friendly, it is most likely going to be beneficial to a soakaway and the septic tank as a whole.

Should I Wash Everything By HandIf I Have A Septic Tank?

In no way, shape, or form. Many people believe that septic tank owners shun washing machines like the plague. This is not true. To restate, there is no problem with using a washing machine when using a septic drainage system. The most important consideration is how much water you are able to pump through to the tank and soakaway. Of course, you should always be sure that you are not putting anything in your laundry that will destroy the microorganisms in your septic system. Your septic tank is most likely the only area where you will find the germs you require to grow.

You run the danger of clogging up your septic tank if you use bleach in the laundry or anything even anti-bacterial in the house.

Laundry Habits – Tips For Septic Tank Owners?

When using your washing machine, make sure to follow these guidelines to avoid damaging your septic system.

  1. Keep an eye on your water consumption– try to avoid taking showers or baths while running your washing machine. Make an effort to reduce the amount of loads you do in a single day by spreading your laundry out over the course of the week rather than doing it all in one day. When it comes to purchasing a new washing machine, don’t be fooled by the A+ certification! This is for energy efficiency in the form of ‘electricity,’ not in the form of ‘water consumption. To assist customers in the buying of water-efficient washing machines, How To Save Water offers a fantastic post on Water Efficient Washing Machines.

Looking After Your Septic Tank

One of the most important things you can do to extend the life of your septic tank and safeguard its beneficial bacteria is to use your washing machine responsibly. Additionally, you may apply Muck Munchersseptic tank bacterial treatment on a regular basis to maintain a healthy, efficient septic tank system as well as drains and soakaways that are free of clogs. You may take further actions to ensure that your septic system remains in peak operating condition, which we have discussed in previous articles, such as Your Septic System – What Not to Flush Into It!

And, if you’re interested in learning more about which laundry detergents are the best for septic tanks, check out our post on the best laundry detergents for septic tanks.

A Primer for Washing Laundry in Your Septic System

The majority of homeowners who are new to septic systems aren’t sure how to properly care for their system or what changes they need make to their typical routines. When you have a septic system, you will notice a difference in the way you wash your clothes. What you should know about doing laundry with a septic system is outlined in this section. Be familiar with the differences between potable, blackwater, and graywater Potable water, also known as clear water, is the clean water that enters your home and is used for a variety of purposes such as drinking, cooking, bathing, and doing laundry.

  1. If you use your washing machine to wash filthy diapers, this is also considered blackwater usage.
  2. Gray water from the washing machine can be diverted and used for other reasons, such as watering non-edible plants, in some places where the regulations allow it.
  3. In order to comply with code, an addition to a conventional septic system is required.
  4. The washing machine accounts for over 22 percent of a home’s gray water use; therefore, using the machine properly can help safeguard your septic system.
  5. However, spreading out your loads of laundry across a week can save you time and money.
  6. A washing machine consumes a significant amount of water.
  7. If you have a large family, you may need to do 1 or 2 loads of laundry every day in order to keep up with the demands on your system and keep it from being overloaded.
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Using a washing machine that is more efficient than your present washing machine will help you minimize the quantity of gray water that enters your septic system.

Standard washing machines, on the other hand, consume far more water – 30 to 40 gallons!

If you just have a little load of laundry, make sure you change the load size on your washing machine to conserve water and limit the amount of waste that goes into your septic system.

Most consumers appreciate a good deal, but cheap laundry detergents, particularly powdered detergents, sometimes contain additional filler, which is often clay in composition.

When washing clothes, it is advisable to use a high-quality liquid laundry detergent that has been expressly formulated to be safe for septic systems by the manufacturer.

Don’t Use Too Much BleachIt’s fine to use bleach on a regular basis in levels that are common for a household.

Just be cautious not to overdo it, since this might disturb the balance of microorganisms in your system.

If you are a homeowner who is unfamiliar with septic systems, please call us immediately. Our technicians can provide you with further laundry advice, information on how to best maintain your septic system, and help you set up a scheduled repair appointment.

Does Washing Too Many Loads of Clothes Hurt a Septic Tank?

Septic tanks are intended to do a variety of tasks, including storing, filtering, and draining all of the wastewater generated by your home. Adding more wastewater to a tank than it was intended to hold may not necessarily harm the tank, but it can result in a variety of other major issues. If you do a lot of washing, you may need to make some changes to your routine in order to preserve your septic tank and ensure appropriate drainage of the water.


Flooding, blockages in plumbing fixtures, and spilling sewage rising to the surface of the earth are all possible consequences of an excess of wastewater in the system. In order to eliminate contaminants from wastewater, it must have enough time to filter and drain. If there is too much water in the wastewater, it may not filter correctly or may flow too rapidly through the septic tank and drain field.


Selecting the right cycle for your laundry load will help you save water. For example, don’t use the large-load cycle if you just have a few items of clothing to wash. Washing a lot of clothes at once is not recommended; instead, spread it out over several days to allow the tank to drain completely. If you are considering getting a new machine, consider investing in a water-efficient model that will let you to put less water into your septic tank.


Thousands of species of bacteria live in your septic tank, many of which are valuable in removing toxins from wastewater. However, some cleansers, such as chlorine and nonbiodegradable soaps, can kill these beneficial bacteria, making your septic tank ineffective. Excessive quantities of detergent can clog dirt pores and cause drainage to get clogged; liquid detergents, on the other hand, are less prone to do so.

Your Wastewater System: Where Does Your Washing Machine And Dish Wastewater Go?

Wastewater from your washing machine and dishwasher may be disposed of in your septic tank and/or cesspool, or it may be disposed of in a dry well, which is a separate disposal system. Because of the high quantities of soaps and detergents, grease, and paper in this effluent, it can be hazardous to human health. Many bacteria can be inhibited or even killed by soaps and detergents when used in high enough quantities, according to the EPA. This portion of plumbing may be maintained by simply combining 8 oz.

of warm water to ensure that it is well cleaned.

After that, simply run your washing machine as usual, and your pipe will be clean and free of obstructions.

Why does this work?

Roebic K-87 (Roebic K-87) It is a combination of specialized, proprietary bacteria that survive in conditions with high concentrations of soaps, detergents, and other organic materials. In addition to having the genetic ability to breakdown soaps and detergents, these bacteria are also capable of mitigating the negative effects of the detergent on other microorganisms. The bacteria in this product carry out their functions without interfering with the activities of other microorganisms that are necessary to keep a system working well.

If your wastewater is treated using this product, you should use it at least twice a year and more frequently if required, regardless of whether your wastewater is treated with a septic tank, cesspool, or drywell.

Important Tip:

Washing loads should be spaced out: Spacing out your laundry loads and avoiding performing three or four loads back to back accomplishes two goals at the same time. First and foremost, it contributes to lengthening the period of time during which hazardous soaps and detergents are delivered into the system, so helping to “soften the blow.” Second, by gradually increasing the volume of data transferred via your system, it helps to alleviate capacity demands placed on your system. When processing an additional 100 gallons of wastewater over a period of six hours, your system will perform better than it will if the 100 gallons were placed into the system all at once.

Septic System Do’s and Don’ts

Do you currently reside in a house that is equipped with a septic system? Are you considering purchasing a property that has a septic system? You’ve arrived to the correct location. The average septic system may last 20-30 years if it is professionally installed and well-maintained. If you follow the typical do’s and don’ts of septic systems, your system can survive even longer. What you do and don’t do has a significant impact on the ability of your septic system to perform its functions. We’ve divided the list of dos and don’ts into categories to make it easier to navigate.

The Septic Tank

  • Every 3-5 years, you should have your septic tank drained. If you have an aerobic system, make sure it is inspected and maintained on a regular basis (every 6 months)
  • Space the usage of water-generating equipment out over a period of time. Call a professional DEQ qualified contractor for installations and repairs, especially if your tank is over due for a pumping. If you feel your system is malfunctioning, call a professional DEQ certified contractor for installation and repairs. 100 percent of the DIY septic systems we see end up costing the homeowner significantly more money than they anticipated
  • Keep a detailed record of repairs, tank pumping, inspections, permits issued, and other maintenance records
  • Keep a sketch of your system with your maintenance records
  • Hire a professional to inspect your system every year. This comes in helpful while performing maintenance and repairs on your vehicle. Whether you don’t have a drawing, you can check with the Department of Environmental Quality to see if there is a record on file.

NOTE: If the DEQ does not have a record of your septic system, it is likely that it is either:1. an old system that was installed before all of the requirements were in place, or2. a new system that was placed after all of the regulations were in place. 2. A system that has been illegally installed by someone who is not qualified. In the case of a newly constructed home, this should raise alarm bells.


  • WARNING: If the Department of Environmental Quality (DEQ) does not have any data on your septic system, it is either:1. an old system that was installed before all of the requirements were in place, or2. a new system that was installed after all of the regulations were in place. An unlicensed installer who installs an unauthorized system. This is a major red flag if your home is relatively new.

The Lateral Field

  • Maintain the grass on your lateral field. Using this method, you may reduce evaporation and erosion while diverting other sources of water away from the septic system, such as gutters, house footing drains, and sump pumps, for example. Overabundance of water will prevent natural purification of waste water by the soil in the lateral field.


  • Drive over or park on the lateral lines of your property. They will be damaged as a result of the weight. Grazing animals can also be a source of concern. The same regulations apply to those of you with aerobic systems when it comes to your sprinklers
  • Don’t grow trees or bushes that are too close to your lateral lines. The roots will grow into your system and cause it to get clogged. Building anything over your lateral field is something we see all the time. We see people erecting buildings on top of them on a regular basis. As a result, their systems eventually collapse. Because replacement is expensive, you should cover any section of your lateral field with gravel, asphalt, concrete, or other suitable material. This is something we see a lot as well. In addition, systems such as installing sprinkler systems over or around your lateral field, overwatering your lateral field, altering drainage in your yard without considering the impact it will have on your septic system, and draining water from hot tubs or swimming pools into your septic system all fail. Using a large amount of water would drown your lateral field, and chlorine will kill vital microorganisms in your septic tank as well as your lateral field.

Septic System – In The Kitchen

  • Reduce the amount of time you use your garbage disposal. It is not recommended to put anything down the disposal that can easily be thrown away, such as coffee grounds or food. A drain catcher can be used to prevent food bits from traveling down the drain. Only a complete load of dishes should be loaded into the dishwasher. It is wasteful to run tiny loads since it wastes both water and electricity.


  • Cooking fat or oil should be poured down the sink or toilet. When you pour household chemicals down the sink, it can harden and clog your pipes
  • When you pour oil or gas down the drain, paint thinners, latex paint, solvents, weed and bug killers, or other chemicals down the drain, it can clog your pipes. They have the potential to pollute your septic system and perhaps endanger the water supply for your entire area.

Septic System – In The Bathroom

  • Fix any leaky faucets or toilets as soon as possible. Installing water-saving toilets, faucets, and shower heads may save up to 5-10 gallons per hour, which is enough water to fill a swimming pool in a year
  • Instead, use low-flow toilets, faucets, and shower heads. These gadgets have the potential to cut water use by up to 50%.


  • Items or substances that are difficult to degrade, such as feminine hygiene products, condoms, dental floss, diapers, cigarette butts, kitty litter, paper towels, or drugs, should be flushed. All of these products have a place in the garbage can. The only items that should be flushed are wastewater and toilet paper
  • When shaving or brushing your teeth, let the water running continually to prevent clogging. You may save up to 6 gallons of water each usage
  • You can flush dead fish or small animals
  • And you can save money on water bills.

Septic System – Laundry

  • Make use of a washing machine that has the Energy Star mark on the front. This line of washing machines uses half the amount of water that normal models use. Top loading washing machines use nearly twice as much water as front loading washing machines
  • Thus, only wash full loads in your washing machine or use the right load size when washing lesser loads. liquid washing detergent should be used


  • Make a point of doing all of your laundry in one day. While it may be handy to do so, it will place a significant strain on your septic system as a result. Spread out the work over the course of the week by completing 1-2 loads every day. a piece of advice: start a load of laundry before night and put it in the dryer when you get up in the morning

Following these guidelines and educating everyone in your household can allow you to save a lot of money and headaches while also protecting your home, health environment, and septic system. If you have any questions concerning your septic system, please contact us and we would be happy to answer them. Do you adhere to the following septic system best practices? Tell us in the comments section! More do’s and don’ts may be found on our Facebook page.

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