domestic concrete sewage treatment plant

Biocell Domestic Concrete+

(19 customer reviews)

For the highest effluent quality at the lowest power consumption on the market*, choose the Concrete+.

*Certified by EN-12566-3, SR66, British Water, UK2020 Septic Tank Upgrade Regulations, CE marked

Available in 8/12 person capacity with gravity/pumped outlets.

Riser kits not needed for normal installations. Riser kits available from 300-600mm for deep installations.


The Recommended Concrete Domestic Wastewater Treatment Plant

The Biocell Domestic Concrete+ is one of the most popular domestic wastewater treatment plants at Biocell Water. This impressive home sewage treatment system combines a reinforced concrete septic tank with a three-stage treatment process into one single domestic packaged plant. Unlike many other domestic septic systems on the market, the reinforced concrete tank is suitable for below ground installation in all soil conditions. It is also suitable for installation in areas with vehicle traffic or livestock due to the reliable and robust structure of the concrete tank.

Like all Biocell home sewage treatment plants, the Concrete+ is both EN12566-3 and  SR66 certified and British Water approved. The innovative design comprises a strong water tight tank made from reinforced concrete with a flat base for easy installation. This shallow dig tank does not require a concrete backfill – saving time and money on costly installation works. It boasts very high effluent quality in combination with low running costs and a huge sludge storage chamber for extra long desludging intervals. In addition to the standard model, there are gravity and pumped outlet models available.

The Ideal Domestic Concrete Sewage Treatment Plant for Homeowners and Builders

There are many reasons behind the success of the Biocell Domestic Concrete+. It is a strong, durable and reliable home sewage system with a great price tag. For builders, installers and industry professionals we offer a trade discount.

We like to make things as easy as possible by delivering and placing the tank inside the excavation with a truck mounted crane. Where there is a high water table, this tank is the easiest to install. After that, it is plug and play with all the components built inside the system.

Once an order is placed we offer quick turnaround times and a rapid nationwide delivery service so contact us today for a free quotation.

For additional peace of mind, we provide a nationwide customer support service and for long term care we offer value for money maintenance packages to keep your new home sewage treatment system in top working order.


Can I upgrade my septic tank with a Concrete+?

In situations where an existing domestic septic system is outdated or failing, the Biocell Concrete+ is approved for replacement installation. It is a plug and play unit, with all the necessary components for domestic sewage treatment inside the reinforced concrete tank.

What happens to the sludge?

Sludge accumulates inside the Concrete+ over time. Like all treatment plants, the sludge should be removed on a regular basis by a professional sewage disposal company who pump it out and take it away for disposal. This is the most economical way to tackle sludge in domestic wastewater treatment systems.

How do I buy the Concrete+?

Our experienced technical sales team are here to help guide you through the process and ask the necessary questions. Simply get in touch using the contact form or give us a call. We are happy to provide you with a free quotation or to provide extra information about any of our wastewater treatment plants and products. We look forward to hearing from you.


Biocell Domestic Concrete+ Brochere

Biocell Domestic Concrete+ EN12566-3 SR66 Certificate

Biocell Domestic Concrete+ 8 Person Plan

Biocell Domestic Concrete+ 12 Person Plan

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  • Please add any additional information about your requirements here.

Additional information


6 to 18 persons

Outlet Type

Gravity or pumped

Inlet Pipe Size

110mm / 4"
160mm / 6" available on order

Outlet Pipe Size

Gravity models: 110mm / 4"
Pumped models: 38mm / 1¼"

Manhole Extensions Available

Yes – to 1000mm

Manhole Size

Ø 680mm

Tank Material

Reinforced precast concrete

Electrical Supply

3 core 220v

Electrical Consumption

55W blower on standard domestic models


EN12566-3, SR66, British Water approved

CE marked


Suitable for below ground installation


19 reviews for Biocell Domestic Concrete+

  1. tadhg heffernan

    Top class. Spoke to very helpful guy in the office about a service call. Got everything sorted in no time.

  2. PJ Murray

    Good service

  3. conor dwyer

    Great thanks.

  4. Richard Huges

    Our experience with Biocell was positive right from the start, they are very good at what they do! Good communication and reliable.

  5. Patricia Cox

    Very helpful staff with great technical knowledge, made the process a lot easier for us. Went with concrete in the end. Very happy with the service.

  6. Tom Davies

    All round great product and service

  7. Dan Rodgers

    It was my installers first concrete tank and he was impressed. I am happy with the overall solution.

  8. Zoe Bright

    Great purchase. Happy I went with concrete – but you do need plenty of space for the delivery truck!

  9. Ian Daninger

    Didnt know you could get a concrete sewage treatment plant until I found this one. In the ground now in Scotland. No complaints!

  10. Simon O’Carroll

    Received good advice from biocell. The price was very competitive.

  11. Frank Bourke

    Wanted concrete but didn’t want to buy from the local guy as he is a one man band so no backup if he stops selling/retires/is on holidays. Went with Biocell and glad I did. Good product and they supplied manhole extensions for free.

  12. Peter Quinn

    I work with concrete daily so wanted a concrete tank. Way better value than other systems I priced and very happy with it.

  13. MP knight

    Had to go concrete as pipes were so deep. Good service.

  14. Danny Durken

    Purchased for my new home in Ireland. Its one of the only tanks on the market that does 8 pe in a single nice round tank. Didnt want a two tank system as its extra connections and hassle. Very good job. A local concrete guy had a concrete tank on offer also – but I wanted to deal with a company that will still be there in 20 years!

  15. JM Agri

    Installed in the middle of a field so went with concrete to be safe. Very big strong tank. Very impressed.

  16. Paddy Barnes

    A different system was recommended by my architect. Shopped around and bought a biocell concrete and saved a few pound. Architect was also happy when he saw the unit installed.

  17. P.A Rynn

    Tight for space so installed tank under driveway. Good job.

  18. Frank Connors

    Great job. Dropped in the hole with the crane.

  19. Ted Rogers

    Very big tank. Value for money. Was going to buy from a local concrete lad – but the local guy seems to make tanks, fence posts, paving slabs, etc, and was not very knowledgeable – so decided to go with a specialist supplier as want a good aftersales service.

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