Aquatron Composting Toilet System
The best Swedish separator technology paired with NZ-made manufacturing - a rugged, eco-friendly composting toilet system that still flushes.
Key Benefits
Easy composting
The Bio Chamber composts solids to just 5% of their original volume; composted material only needs removing about once a year.
No smells, no chemicals, no power
The system uses the toilet flush and gravity to work; no fan is needed.
Customisable to your needs
Multiple toilets can be installed above a single bio-chamber.
The best of both worlds
The unique separator means you get a flush toilet that's still a composting toilet.
Low, easy maintenance
No lugging heavy, smelly containers; you only ever handle composted material.
Highest quality standards
The best of Swedish and New Zealand manufacturing for a durable, reliable system.
Why Aquatron
The Aquatron combines the best Swedish separator technology with the highest-quality New Zealand manufacturing - a rugged, reliable, eco-friendly composting toilet system that still gives you the comfort of a flush. At its heart, the patented Aquatron Separator uses the momentum of the flush water, centrifugal force and gravity to split solids from liquid. No moving parts. No chemicals. No electricity.
How the Aquatron Works
The Aquatron works with a conventional household toilet pan - ideally a low-flush (6 litres maximum) with a P-trap. When you flush, waste travels to the genuine Aquatron Separator, made in Sweden and imported exclusively by us.
Inside this unique, patented separator, the momentum of the flush water, centrifugal force and gravity split the solids (waste and toilet paper) from the liquid - with no moving parts and no power. Solids drop into the NZ-made Bio Chamber to compost, while the liquid is diverted to a soakage field or joins the grey water for further treatment.
The Bio Chamber has four rotating bins. When the first fills with solids, you turn the handle so the second bin takes over. By the time the first bin comes back around, compost worms have reduced the solids to about 5% of their original volume - so you only remove composted material about once a year at most, depending on climate and use.
INDEPENDENTLY TESTED
Proven Results
PPM E. coli, untreated
PPM after treatment
%
volume reduction with compost worms
Tested by the Rotorua Lakes Council Environmental Laboratory - meeting or bettering NZ and Australian standards.

The Patented Aquatron Separator
Every system uses the genuine, patented and CE-certified Aquatron Separator, imported from Sweden. It harnesses the momentum of the flush water, plus centrifugal force and gravity, to split solids from liquid — with no moving parts and no power. Up to three standard toilets can share a single separator; a larger model handles up to eight flushing at once.
Innovative Waste Separation Technology
View showing the centre of the Separator leading into the Bio Chamber, where the solid waste will go.

Aquatron Composting Systems
The Ultimate Bio Chamber

Aquatron Ultimate, installed under a house
Extra strong for outdoor use where you have the system under the open sky. Rainproof and protective hood against strong UV light from the sun for longer Life (hood for the separator). Suitable for a medium household with 5 persons, permanent living.
- The bio chamber (4 compartments, about 100 liters each) is rotated every 225 visit or 2-3 months.
- A full rotation takes approx 1 year, then the the post-composted chamber is ready to be used again, or emptied (some nutritious odorless soil at the bottom).
Made in Rotorua, New Zealand, the Ultimate Bio Chamber uses bacteria and, if you choose, compost worms to break solids down - cutting their volume by up to 95%.

Every compartment in the bio-chamber can be taken apart if needed.

Showing 1 of 4 internal rotating bins, fittings for connecting the separator to the biotank & the gray drainage mat.

The center shaft is stainless steel tube for maximum durability.
Compact model
Aquatron Primary Bio Chamber
Suitable for the the family vacation house, 1-2 persons.
- The bio chamber (drawer 50 liters) empties approximately every 120 visits.

APPLICATIONS
Suited to Almost Any Site
From holiday homes and lifestyle blocks to campgrounds and even public buildings, the Aquatron works almost anywhere - especially where a vacuum truck can't reach or you'd rather manage waste on-site. And it scales: connect up to three toilets to one separator, or up to eight on the larger model.
The Range
Aquatron Products

The Ultimate Package
FOR THE HOME
The complete setup: Ultimate tank (800L) + separator + a standard toilet, ready to install.

Standard Setup (50 L)
FOR THE BACH
A more economical option: standard toilet + separator on the compact Primary 50 L tank.

Aquatron Ultimate & Seperator
FOR YOUR OWN TOILET
ust the core hardware - tank and separator - for a custom install or your own toilet.
Why Aquatron is a Good Decision
Better results than a traditional septic tank - for less. No smells, no chemicals, no power. A normal flushing toilet almost anywhere, backed by Swedish engineering and NZ manufacturing, and independently tested to meet NZ & AU standards.
Downloads
Brochures & Certifications
Aquatron Separator Brochure
Aquatron UV TEST REPORT
CE Certificate / Sitac Test Report
GreenPro Assessment Report
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