DWT-Septic – Bio-Septic Tank Bacteria

Item number: 7108814731851
  • Powerful septic tank additives that effectively break down the layer of sludge in your tank
  • Keep your septic tank in top condition and prevent odours and blockages
  • Biological, non-toxic and safe for your pipes
  • In a durable packaging
  • Bio-Septic becomes DWT-Septic. Different name. Same product.
  • Contents: 1 kg ℮

DWT-Septic | Bio-Septic Tank Bacteria

The well-known DWT-Septic septic tank bacteria, but packed with 90% less plastic.

DWT-Septic supports the bacteria in your septic tank. It improves the efficiency and degradation in the tank. This results in less sludge in the tank, a cleaner discharge and less or no odour nuisance.

DWT-Septic is a biological, non-toxic and non-harmful product for the maintenance of your septic tank or WTP. The product works with aerobic micro-organisms that are sporulated on a mineral carrier. A natural process, as it were a kind of hibernation. One gram of Bio-septic contains over 10,000 micro-organisms, which are 100% intact due to the sporulation technique. This is in contrast to many other methods, such as freeze-drying, in which less than 10% of the micro-organisms survive.

DWT-Septic is a non-soluble powder. About ten grams should be dosed once or twice a week in the drains of the kitchen or toilet. When the product comes into contact with water, the micro-organisms will become active and the bacteria will find their way to the septic tank or WTP. There, the bacteria will break down the excess sludge. Sludge is food for them. Because this decomposition takes place in an aerobic way, the septic tank or WTP will give less or no odour nuisance and the efficiency is improved, which reduces the impact on the environment.

By switching to new packaging, we can reduce the amount of plastic used by approximately 90%. The cardboard can be disposed of as waste paper and the plastic end-caps can be disposed of as plastic waste.

What is DWT-Septic suitable for?

DWT-Septic is suitable for maintaining, solving and preventing odours in septic tanks and WTPs. When you dose Bio-Septic through the kitchen drain, it will keep the pipes cleaner. Grease is also broken down by these septic tank bacteria.

How do I use DWT-Septic?

Start-up period: Distribute 10 grams per person per week over drains such as toilet and kitchen.

After 15 weeks: Distribute 5 grams per person per week over drains such as toilet and kitchen.

Calculation example: You have a family of 4 and you discharge into an small sewage treatment system of about 3,000 litres. The first 15 weeks you dose 40 grams per week in the toilet. After the start-up period of 15 weeks, you reduce the dosage somewhat and flush 20 grams down the toilet per week.

How much DWT-Septic do I need for my septic tank or WTP?

DWT-Septic+ is delivered in a 1 kilo cardboard can. A family with 5 persons will use approximately 1 to 1.5 kg per year.

Difference between DWT-Septic and DWT-Septic+ for use in a septic tank?

Both products are pre-eminently suitable for maintenance, solving and preventing odours in septic tanks and WTPs. The aerobic micro-organisms are very effective in breaking down organic material without causing any odour. The standard DWT-Septic contains approximately 10.000 bacteria per gram.

For septic tanks that are heavily used or that already give a lot of odour nuisance, there is DWT-Septic+. This product contains an enormous amount of micro-organisms, approximately 100.000 per gram. In combination with the unique production method, DWT-Septic+ is a very effective product for the maintenance and support of your septic tank or WTP.

What are the advantages of DWT-Septic and DWT-Septic+?

  • The WTP, septic tank or septic tank has to be emptied much less.
  • No more stench from your septic tank because of aerobic working
  • Cleans and keeps the pipes from your kitchen clean
  • 100% biological
  • Durable
  • Easy in use

 Is DWT-Septic a preventive product?

Yes, it is. DWT-Septic is a preventative and supportive product.

What can affect DWT-Septic?

In case of a septic tank or WTP, be careful with chlorinated cleaning products! They can seriously disturb the biology in the tank.

What is the difference between DWT Bio-Septic products and other products on the market?

Apart from the fact that DWT-Septic is a very effective mix of bacteria, fungi and other micro-organisms, its production method is unique: many bacterial products are freeze-dried after cultivation together with a carrier material. This method is simple and cost-effective. However, a large proportion of the micro-organisms do not survive this method. This can be detrimental to the effectiveness.

The DWT-septic products are made differently.

The bacteria, moulds and other micro-organisms are cultured under ideal conditions. Then a natural carrier material is added to this mix. After this, the conditions are made extremely unpleasant for the bacteria. They react to this by attaching themselves to the carrier material.
The great advantage is that this is a natural reaction to stressful conditions. Bacteria can maintain this stage for many years. As soon as the conditions are right again (as soon as they enter a watery environment), the bacteria can activate again very quickly. This is good news, because it means they can clean your septic tank or WTP very quickly!

More information:

In our webshop we sell several organic and ecological cleaning products, which are suitable in combination with a septic tank, cesspool or domestic wastewater system without affecting the function of the bacteria.

Customer Reviews

Excellent service

5/5

I ordered bacteria for my stalled septic tank system. Fixed the problem! Thanks!

– Martin, Brewood

Great product delivered quickly

5/5

Easy to navigate website with detailed descriptions of wide range of products.

– Alastair, Okehampton

Great. Fast and efficient despatch

4.5/5

So far so good. Product takes a bit to work so difficult to rate yet but arrived safe N sound.

– Agi, Girvan

Customers rate us with a

9 out of 10
05/01/2026

Very Happy with the Service

I spoke with Richard who was able to advise me on the best products to use. Dispatched quickly and arrived well packaged.
– Mike
Source: Kiyoh
28/12/2025

Cleared.my water to my soakaway

I had an obvious clog between soakaway and septic tank. Completely inaccessible to a human. This solved the problem almost instantly.
– Be Ge
Source: Kiyoh
22-12-2025

Very good service

Great product, good around service, quick delivery.
– John
Source: Kiyoh
18/12/2025

New to Septic tanks problems

New to septic tanks so was befuddled by an annoying stench. Great website was easy to understand, advice and problem solving. Purchased recommended products and it seems to be sorted. Will follow advice going forward. Reasonable price compared to other sites, purchase and delivery was seamless and quick. Grateful newbie. Cheers
– Andrew
Source: Kiyoh
09/12/2025

Great customer service

Great descriptions on each product, Easy to order and pay, quick delivery, well packaged and the products work! Perfect! Thankyou
– Kathryn
Source: Kiyoh
07/12/2025

Brilliant

The Septic Take shop products and delivery – are brilliant.
– James
Source: Kiyoh

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