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BIOROCK®, the best compact sewage treatment without electricity, zero energy. 25 years warranty!

The original!

Revolutionary technology

  • Septic tank replacement / upgrade
  • No electricity sewage treatment process
  • Very light maintenance
  • 24 Hour start-up period
  • Long absence periods acceptable

Unique advantages

  • Completely silent
  • Low operational costs
  • Superb effluent quality
  • Septic tank conversion unit (retrofit)
  • Non-electrical
  • Optimized for Ireland


  • Low carbon footprint
  • Minimum annual maintenance
  • Long desludge interval


When buying a sewage treatment plant in the Ireland: BIOROCK! The low-maintenance, non-electric(*) waste water treatment plant.

(*) BIOROCK systems only need a small, easy to exchange pump to reuse the treated effluent if needed.

BIOROCK Non-Electric Septic Tank Conversion Unit: Our plant uses no electricity for the treatment process and can be added to an existing septic tank.

BIOROCK products

BIOROCK Sewage Treatment Plants

BIOROCK® offers a complete range of compact non-electric waste water treatment plants, denominated into 6, 10, 15 & 30 person ECOROCK systems. If installed in parallel the treatment units can also cater for 60, 90, 120 people and so on. BIOROCK non-electrical sewage treatment plants provide a revolutionary, efficient and reliable compact wastewater treatment solution for Ireland. Very compact, our systems don’t need any electricity for the treatment process. They are free from any blower or air diffusors, leading to minimal maintenance and repair costs.These unique advantages lead to significant costs savings for the user compared to conventional wastewater treatment plants, as the reliability of the system is maximized with no possible breakdowns thus no need for expensive spare parts.

The BIOROCK system consists of a separate settlement tank, which can be an existing traditional brick or concrete septic tank, followed by the BIOROCK sewage treatment plant.

The costs-saving domestic treatment unit

The BIOROCK non-electric sewage treatment plant will save you between € 350 - € 800 and over 0.5 tonnes CO2 emissions every year for 5 person plants when compared to the current market leading Sewage Treatment Systems. BIOROCK prices are no more than that of Biodisc systems.

The best final effluent testing results in Ireland

BIOROCK sewage treatment plants clean the sewage to an astonishing level of purity. They achieved a final effluent with a 99% reduction in pollutants during the EN 12566-3 test period when following a 2 stage settlement tank. This is a lot cleaner than the leading electric sewage treatment plant that sells for the same price. BIOROCK units can be used anywhare where no water treatment works is available.

Biorock sewage treatment solutions

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Let’s talk about sustainable sewage water treatment:


In order to support sustainable development, BIOROCK® has developed a sewage treatment plant that does not need electricity or chemicals to work. Making the choice to install a BIOROCK is a sound environmental decision.

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