Unique advantages


  • No electricity required for treatment
  • No moving parts inside
  • Very fast start-up period
  • Tolerates long absence periods


  • Completely silent
  • Lowest operational costs
  • Superb effluent quality
  • Can be retrofitted to existing septic tanks


  • Long lifespan BIOROCK Media
  • Low carbon footprint
  • Minimum annual maintenance
  • Long desludge intervals

Recycle 100% of the water you have already paid for with a BIOROCK water recycling system

Using the proven trickling filter process, a proprietary media, and natural aeration, the BIOROCK range offers a complete domestic wastewater recycling solution for both greywater and blackwater. By retrofitting a BIOROCK system to an existing septic tank, you can recycle 100% of the water, and nutrients, for irrigation.

Our residential On-Site Wastewater Treatment Plants

BIOROCK offers a complete range of compact and non-electric domestic sewage treatment plants, denominated into 6, 8, 10, 15 & 30 person systems. Installed in a parallel configuration, the treatment units can also cater for 60, 90, 120, or 180 people. The BIOROCK energy-saving wastewater treatment plants offer an ideal solution for residential, domestic wastewater treatment.

BIOROCK provides a revolutionary, efficient, and reliable compact wastewater treatment solution. Our compact packaged systems do not use blowers or air diffusors, or air pumps (commonly achieved with pumps and venturi nozzles). They don’t require electricity for the treatment process, resulting in minimal maintenance and repair costs, the lowest operational costs, and by far the longest desludge intervals. These unique advantages lead to significant costs savings for the owner compared to conventional wastewater treatment plants, as the reliability of the system is maximised, while minimising possible breakdowns, and eliminating the need for expensive spare parts.

The cost-saving Wastewater Treatment Solution

Not all Package Sewage Treatment Plants Wastewater are created equal. The ongoing operational cost is one of the most important considerations when buying a Domestic Wastewater Treatment Plant. Electric On-Site Treatment Plants result in significant energy and operational costs in the future. By combining the competitive capital cost with the most cost-effective operating costs, BIOROCK is an investment in your future.

Download our brochures to learn more

See our full range of leading systems available in Southern Africa

Testimonials and case studies

With 25 years in the wastewater industry, we pride ourselves on our ability to supply our customers with the most economic, sustainable and effective residential Wastewater Treatment solutions.

Click on the pictures for an overview of some BIOROCK installations throughout the world.


Significant savings through very low maintenance and running costs

No energy costs for the treatment process:
Save more than R3,000 a year*
Long emptying intervals of the primary tank (3-4 years only):
Save more than R2,000 a year*

Minimal maintenance and repair costs. Not prone to failure or electrical or mechanical breakdowns, thus no need for expensive spare parts:
Save more than R2,500 a year*


Savings of more than R7,500 a year!*

* Compared to conventional domestic packaged sewage treatment or wastewater treatment plants


Why consider BIOROCK?

It is the only low-maintenance and non-electric wastewater treatment plant available in Southern Africa.

  • Structurally sound in all ground conditions such as high ground-water sites.
  • Ability to handle intermittent (seasonal) wastewater loadings, even during long absence periods.
  • Can also handle low utilisation levels without compromising the treated effluent quality. 
  • Non-Electric septic Tank Conversion Unit: Our plant can be added to an existing septic tank. 

The best final effluent testing results

BIOROCK residential On-Site Wastewater 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 anywhere where no water treatment works is available. 

More information: Read Traditional VS BIOROCK

The BIOROCK Advantage

  • Completely silent
  • Minimal odour risk
  • Excellent treatment performance
  • Independently Tested and Certified
  • Free Initial Consultation
  • Installation by trained BIOROCK Certified professionals 

Leading Warranty!

Media: 10-years
Tank: 25-years

Terms and Conditions apply.

About the unique BIOROCK Media

The BIOROCK media material has a very high surface area which allows for the extensive colonisation of the necessary bacteria. The bacteria are already present in the domestic wastewater and does not need to be added at any time. The presence of these bacteria are essential for the effective treatment of the domestic wastewater.

The BIOROCK media is highly resistant to degradation, and remains stable over the proven service life of the systems - our more than 25 years' experience in the industry is proof of this.

  • Very stable inorganic material - it does not break down over time, like "organic" media.
  • Requires little maintenance - scraping and scarification is not necessary as with other media.
  • The structure and composition ensures unsurpassed surface area and unique treatment with exceptional purification results.
  • The media is an ecological material, and 100% recyclable.

BIOROCK offers a more efficient and environmentally friendly wastewater treatment technique compared to alternative and traditional techniques which have a high maintenance and energy consumption.

An Independant Organisation has ranked the BIOROCK Media as the most efficient Media of its category - click here to learn more