Treatment Levels

Treatment Levels

There are four main levels to wastewater treatment systems: primary, advanced primary, secondary and advanced secondary.

For ecologically sensitive areas, systems can also be tertiary/UV and denitrify the water which removes harmful bacteria and nitrogen from the water. 

Primary

Primary systems (such as septic tanks) use anaerobic bacteria to break down material slowly and remove contaminants through a simple process of sedimentation and floatation.

Advanced Primary

Advanced primary systems such as our NaturalFlow treat wastewater using a media trickling filter combined with vermiculture processes to break down and compost waste products.

Secondary

Secondary systems such as Biolytix provide additional treatment to wastewater before it is disposed of. Biolytix nature-inspired technology is a unique blend of vermiculture with subtle aeration provides council-approved secondary treatment.

Advanced Secondary

Providing the next level of care, advanced secondary systems, such as the aerated wastewater treatment system EconoTreat, are ideal for ecologically sensitive areas. EconoTreat is OSET tested and council approved; making the consent process simple.

Tertiary/UV

Tertiary systems follow the same process as secondary treatment however the addition of UV further cleans the water by removing bacteria and contaminants such as E. coli.

Both our EconoTreat and Biolytix products are examples of tertiary systems.

Denitrification

A high concentration of nitrogen can cause problems to the ecosystem. Denitrification turns the nitrogen into a harmless gas. Not all advanced secondary treatment systems denitrify wastewater, but EconoTreat does.

It’s ability to reduce nitrogen is one of the reasons why it is suitable for even the most sensitive ecosystems.

It all starts with your site

Get a free site assessment

Not sure what will work for you? Let us take a look.

Your site and dispersal field have the biggest say in which system will work best for you. Let our team take a look, either on site or via aerial mapping, and we can help you find a solution that works for you.

Projects

We’re in 6,000+ backyards around Aotearoa New Zealand

At WaterFlow we work across the country recommending and installing smarter wastewater and sewage systems, for a cleaner New Zealand.

Whether it’s upgrading a water tank or installing a new water system, we always offer bespoke solutions designed to fit your environment and lifestyle. Take a look at our recent projects to be inspired.

Muri Lagoon, Rarotonga

Together with Government initiatives to improve the sanitary situation at Muri to date almost 100 Biolytix tanks are in operation on Rarotonga all helping to minimise the threat of lagoon contamination.

South Pacific Paradise
20 September 2024
Read More

Soneva Jani & Soneva Fushi

The award-winning resort truly defines the essence of barefoot luxury. 33 Biolytix systems help to keep it clean and healthy.

Luxury Resort
20 September 2024
Read More

Vunabaka, Fiji

Green technologies and designs are utilised throughout the resort including the selection of Biolytix for wastewater treatment.

Residential and Hotel Development
28 August 2024
Read More

Passive Solar Home

Our clients came with the mission of creating their own passive solar home. The NaturalFlow system was an obvious choice, being power-free. We were able to help them achieve their dream on this awesome property.

Off-grid, tiny homes
14 December 2023
Read More

Family Home

The EconoTreat was perfect for this family home. With higher volumes of waste and council requirements of secondary treatment, they needed a system that would provide a consistently high treatment.

Residential
14 December 2023
Read More

Packhouse Accomodation

With large seasonal fluctuations, this kiwifruit packing facility needed capacity for peak season staff. A custom designed system by WaterFlow met the requirements for the project, with the capacity to process up to 54,000L per day.

Commercial
14 December 2023
Read More

Otamatea Marae

Struggling to have enough water to sustain the events, we were asked to upgrade the water tanks and drainage. With an additional four 25000L tanks, they aren’t likely to run out any time soon!

Marae & Light Commercial
14 December 2023
Read More

Rural Oasis

The Naturalflow NF8000 System was used in this piece of paradise. The landscaping gives it a tropical feel, as you step through to the pool for some quality time out.

Residential
14 December 2023
Read More

Bahá’í – Henderson

With major upgrades to the building and facilities, the Spiritual Assembly of the Bahai’s was in need of an upgraded wastewater system.

Marae & Light Commercial
01 December 2023
Read More

Servicing

Protecting the Future of Your Property and our Shared Backyard
At WaterFlow we are with you from start to finish – and beyond. Once installation has finished, we are still on hand to provide, maintenance, support and servicing.

Discover ways to maintain your systems in between servicing and how to contact our expert service technicians.

Trade

All you need from first inspection to post-install support

For trade professionals, working with WaterFlow means gaining a reliable lifelong partner committed to achieving project success, and a team that values collaboration, precision, and timely execution.

It all starts with your site

Get a free site assessment

Not sure what will work for you? Let us take a look.

Your site and dispersal field have the biggest say in which system will work best for you. Let our team take a look, either on site or via aerial mapping, and we can help you find a solution that works for you.

WaterFlow NZ Ltd.

Home

Call WaterFlow NZ Ltd.

Call Us

Get a free site assessment

Free Site Assessment