Natural Flow F11000 Secondary Treatment System

Natural Flow F11000 Secondary Wastewater Treatment System (1600L Per Day)

Looking for an eco-friendly, ultra-reliable wastewater solution for an off-grid lifestyle block, rural New Zealand home, or commercial project? The Natural Flow F11000 Secondary Treatment System is the leading vermiculture-based wastewater technology in New Zealand. Engineered specifically to meet stringent NZ standards, this power-free, passive treatment system delivers high-performance secondary-level purification without the ongoing electricity bills or the hassle of regular septic pump-outs.

Whether you are a professional drainlayer sourcing trade-quality systems for challenging Kiwi terrain, or a homeowner planning a sustainable rural build, the NF11000 provides quiet, odourless, and reliable service. Proudly manufactured by Waterflow and supplied by Pratts--your local New Zealand plumbing, heating, and trade supplies specialists.

Key Benefits of the Natural Flow NF11000 System

• Zero Power Consumption: This passive system operates completely power-free, saving you thousands of dollars in energy costs over the lifespan of your property.
• No Regular Septic Pump-Outs: Utilizing natural vermiculture (tiger worms), the system digests solid waste and reduces its volume by approximately 95%. This leaves only a minimal amount of clean vermicasts, eliminating the need for expensive, routine de-sludging.
• Durable & Lightweight Construction: Made from high-strength, roto-moulded plastic modules. The lightweight design allows for straightforward transport and rapid installation using lighter machinery, making it ideal for sites with challenging access or steep terrain.
• Odour-Free Aerobic Process: By harnessing natural aerobic bacteria and vermiculture, the system remains completely odourless and silent, blending seamlessly into your property's natural environment.
• High Daily Capacity: Capable of treating a combined daily flow volume of up to 1,600 litres of blackwater and greywater, making it suitable for larger residential and commercial applications.

Advanced Engineering & NZ Standards Compliance

The Natural Flow NF11000 is a highly engineered 3-module system designed to separate, filter, and purify household wastewater at its source:

• The Wormorator® Module: Blackwater and kitchen sink waste are directed into a 1.8m diameter x 1.7m high dry-vault Wormorator® chamber. Solids are captured on a textile-lined natural media bed, where resident tiger worms rapidly digest the waste, eliminating harmful pathogens and bacteria.
• Secondary Filtration: Wastewater flows through a secondary filter tray designed to reduce Total Suspended Solids (TSS) and Biochemical Oxygen Demand (BOD). This built-in outlet filter meets AS/NZS 1546.1:2008 Clause D3.3 standards and features a minimum life expectancy of 15 years.
• Greywater Management: Greywater is separated at the source and directed to its own treatment tank. It passes through an aerating matrix filter and layers of natural media, combining with treated blackwater in the dose chamber. Features a generous 1,000-litre buffering capacity to easily manage sudden flow surges.
• Emergency Storage: In configurations requiring pump loading, the Wormorator® and dose tank provide a substantial 2,000-litre reserve capacity, offering 24-hour emergency storage in the event of a power or pump failure.
• Flexible Discharge Options: Fully treats effluent to meet strict 20/30 BOD/TSS secondary treatment criteria. It is ready for environmental discharge in accordance with AS/NZS 1547:2012 via LPED, PCDI (surface or subsurface), ETS beds, soakage beds, conventional trenches, mounds, or sand trenches.

Versatile Applications Across New Zealand

The trade-quality NF11000 system is incredibly versatile and commonly specified by specifiers and local councils for:

• Large 3 to 8-bedroom residential homes, rural baches, and sleep-outs
• Farm accommodation, worker housing, and transportable dwellings
• Rural commercial facilities with up to 40 day-staff
• Community buildings, schools, marae, campgrounds, and holiday parks
• Motels, golf clubs, rural cafes, stables, and animal facilities

Get a Custom Wastewater Quote from the Pratts Trade Team

Selecting the right wastewater system depends on your specific site conditions, including soil type, slope, and proximity to sensitive waterways or bores. At Pratts, we help Kiwi homeowners and trade professionals navigate council consents and design the perfect wastewater solution. Contact us today to discuss your project requirements, request technical documentation, or secure a competitive trade quote for the Natural Flow F11000 system.