Septic Safe Laundry Detergent

There are Some Important things to Provide smooth Work for your Cleaning System

septic safe laundry detergent

Almost every homeowner encounters the problem of supplying a system for cleaning his country house, especially in cases where there is no central sewer nearby. In such cases, an autonomous system is provided where the reservoir provides for the accumulation and further treatment of wastewater. Thus, a septic tank is a very popular solution today.

But there are some important things to know to provide smooth work for your cleaning system.

And this article will tell you about septic safe products.

septic safe laundry detergent

What Is a Septic System?

All the sewage drains into the septic tank. It is hermetically sealed and contains special anaerobic bacteria to process wastewater. As a result, impurities are recycled into sludge that settles at the bottom and water that is completely clean and suitable for technical purposes. But purification is not yet complete.

The water undergoes the second stage of purification in the other tank. Here “live” aerobic bacteria purify the water once again. Then, completely clean water is poured into the soil or a third tank, from where you can use it for technical needs on the site and in the house.


Any cleaning system requires appropriate use and care. The work of septic tanks can be paralyzed by the improper selection of detergents, so you have to be aware of what substances can kill your septic tank.

Useful Hints to Keep Your Septic Safe

worst laundry detergent

It is not enough to use a list of septic safe cleaning products to provide proper operation of the septic system. There are some rules to be observed for a washing machine and dishwasher.

Here are some of them:

  • Always try to switch on the machines when you have enough goods (dirty linen or dishes) for a full load;
  • Try not to do more than one washing cycle per day if it is not extremely necessary;
  • If you still need to clean only a few things, use a short cycle;
  • When choosing a washing machine or a dishwasher, opt for a device with a water-saving feature.
  • Always try to use as minimal dosage of the detergent as it is possible.
  • Do not use detergents which may affect the work of a septic tank.

What laundry detergent is safe for septic systems?

septic tank safe laundry detergent

Detergents with chlorine are much cheaper, but restoring the microflora of the septic tank will be much more expensive. The septic safe detergent will increase the durability of your cleaning system.

Cleansers that can be used for household purposes are divided into two types:

  • Phosphate powder or gel.
  • The negative impact on nature is unambiguous: phosphates completely destroy calcium ions, providing the work of active surfactants.
    Phosphate-containing substances kill part of the bacteria, reducing the effectiveness of the entire purification system. So it is better to avoid this type of cleanser if you are using a septic tank.
  • Phosphate and chlorine-free cleaners can be used in septic tanks, but the increased surfactant content also adversely affects the microenvironment. So try to choose such products, but watch for the surfactant content to be below 5%.
septic tank safe laundry detergent

What is the best laundry detergent for septic systems?

To avoid septic problems, it is necessary to choose completely biodegradable detergents.

They are an ideal environment for the development of beneficial bacteria and are quite efficient for household purposes. Such substances decompose perfectly into components and reduce the load on the cleaning system.
In particular, the use of conventional detergents increases the load by 2-2.5 times. In this case, the septic system may reduce its effectiveness and even fail.

Note, that even using septic safe laundry detergent you need to take the right dosage.

And it depends on the following factors:

  •  water hardness;
  •  water composition;
  •  the level of contamination of the object (dishes, linen);
  •  frequency of the detergent use.

Overdose will not bring better results, but it will increase the load on the septic system.

Septic Safe Products

septic safe dishwasher detergent

You can buy all the detergents with biodegradable composition. There is a wide selection of them: for personal hygiene, cleaning the house, etc.

It is worth paying attention to the following brands that produce environmentally friendly detergents: Arm&Hammer, Eco-Me, Mrs. Meyers, Seventh Generation, Ecover, iHerb.

The components contained in these cleansers are ecologically friendly, they do not bring any harm to the environment. They do not represent the dangers of microorganisms, so they are completely safe for use in a home with a local wastewater treatment system.

What Chemical Substances Are Prohibited for Septic Systems?

You should never drain or flush aggressive chemicals into an autonomous sewer. They can adversely affect bacteria. So try to avoid such things as:

  • Pure chlorine, as well as chlorine-containing substances and detergents
  • Substances and products exceeding the surfactant content by 5%
  • Fluids containing phosphates and petrochemicals (kerosene, gasoline, engine oils, paints, solvents, fuels and lubricants, cadmium)
  • Medicines and substances containing formaldehyde, nitrate oxidizing agents and quaternary ammonium compounds. They are not fatal but can cause a strong and persistent unpleasant odor from the septic tank.
  • Active substances like alcohol, acids, alkalis, antifreeze, phosphorus compounds, etc.
  • Cleansers with artificial colors, perfumes, parabens, and sulfates.

Study the label of your washing powder. And if you find any of the above-listed components, then it is the worst laundry detergent for a septic tank.

Avoid clogging of a septic tank

Besides harmful substances, try to keep away the following waste and materials from draining into your septic system:

  • Construction and repair waste (cement, lime, nails, etc.);
  • The remains of rotten fruits and vegetables;
  • Non-recyclable materials (plastic bags, hygiene pads, cigarette butts, rubber, plastic products, etc.);
  • A large amount of pet hair, as well as toilet filler;
  • Items of clothing, diapers, and other fabric materials;

Make septic safe detergent by yourself

septic tank safe laundry detergent

It is very easy to make septic safe dish soap at home.

You will find all necessary components on your kitchen shelf:

  1. baking soda,
  2. soap,
  3. odorless hydrogen peroxide,
  4. white vinegar,
  5. citric acid,
  6. corn starch,
  7. mustard.

Mixing these ingredients in different proportions you can prepare detergents for various purposes.

You can get a solution to clean sewer pipes and plumbing fixtures, kitchen appliances, eliminate odors, stain, mold, grease, and other contaminants.

Such home-made cleansers are quite safe for the functioning of the septic tank. You can find many recipes to prepare septic tank safe laundry detergent or septic safe dishwasher detergent.

To summarize it all, not all chemicals are harmful to the bacteria contained in septic tanks.

Even chlorine powders in minimal doses do not kill bacteria, but only slow down their work.

septic safe dish soap

Therefore, do not worry if you accidentally drained the small amount of harmful detergent, a septic tank will continue to operate without the slightest disruption.
But do not make a habit of it, and your cleaning system will remain safe and reliable for a long time.

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