Offering you the most innovative, simple, and smart wastewater treatment plants since 1988

ECOROCK small sewage treatment plant


BIOROCK offers a complete range of compact and non-electric residential waste water treatment plants, denominated into 4, 5, 6, 8, 10, 15 & 30 person systems. If installed in parallel the treatment units can also cater for 60, 90, 120 people and so on. BIOROCK power-free Waste Water Treatment Plants offers an ideal solution for residential, domestic wastewater treatment.

Our Wastewater Treatment systems offer a simple yet effective process that requires no electricity, has no moving parts, and needs minimal annual maintenance.

One of the main benefits of having a BIOROCK wastewater treatment plant is that it’s a longterm sustainable and economic investment.

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How BIOROCK plants work?

Step 1 : Primary Tank
The Primary Tank clarifies the raw sewage by dividing fats, oils, greases and organic solids. The wastewater then passes through an effluent filter, before discharging into the BIOROCK reactor.

The Bioreactor purifies further the pretreated wastewater with a biological process. To naturally treat the wastewater, our systems use our unique BIOROCK Media, an exclusive and very efficient carrier material for bacteria.

Step 3 : Discharge
Depending on the ground type, effluent will be discharged by gravity, or by a pump.

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The Cost Saving Wastewater Treatment Solutions

BIOROCK offers a unique, innovative solution to eco-friendly water treatment. With the industry’s lowest operational costs and longest emptying intervals, BIOROCK is a valuable, worthwhile investment for your home or establishment.

non electric sewage treatment plant

Odourless domestic wastewater treatment

Quiet domestic sewage system

Eco-friendly domestic sewage system

Eco-friendly domestic sewage system

Who Are Our Wastewater Treatment Plants For?

best domestic sewage treatment plant


This system is perfect for your home wastewater treatment, as it is totally silent, odorless, calls for minimal annual maintenance, and is barely visible. You can even use the resulting water for your irrigation. This is a great method of recycling your wastewater.

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sewage treatment plant for hotel

Restaurants, Hotels and Lodges

BIOROCK systems are the most innovative, cost-effective solutions to wastewater treatment for restaurants, hotels, and lodges, keeping your establishment’s sewage system hygienic and eco-friendly. The unobtrusive innovation is also completely silent, meaning no disturbance for you or your guests.

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commercial wastewater treatment systems

Commercial and Institutional

With so many people in and around your institution, a reliable sewage system is key – which is why BIOROCK is the ideal solution. It’s sustainable, eco-friendly, and efficient - offering a long-term answer to your wastewater problems.

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Our amazing projects

ECOROCK Small Wastewater Treatment Plant installed at Mahia Peninsula New Zealand

Septic system and drainage upgrade: BIOROCK is the real deal

Quality homes should have quality on-site Wastewater Treatment Plants

Wastewater Treatment Plant to serve 60 Seasonal Employees Amenities in Hawke's Bay, NZ

Upgrade of an existing failed septic tank system at a school in the Waikato Region

Potable water harvesting and an On-site Effluent Management Solution

Our Unique Wastewater Treatment Media

BIOROCK's exclusive media is degradation-resistant, stable and sustainable - keeping the purification system working effectively over the long term. You will exclusively find it in our sewage systems.


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