Commercial & Community Wastewater Systems
Packaged, modular Kubota treatment plants from around 5,000 litres up to 1 million litres a day, including membrane systems that produce Class A reuse-quality water. We cover the capacity band where most New Zealand packaged plants stop and bespoke civil-built plants begin: near-municipal performance, at packaged-plant speed, cost, and footprint.
The capacity most packaged plants can't reach
Most packaged treatment systems in New Zealand top out at small-to-mid commercial scale. Above that, projects usually jump to bespoke, built-on-site engineered plants. These are slower to deliver, more expensive, and far larger in footprint.
The Kubota commercial range closes that gap. It scales from small commercial loads right up to 1 ML/day while staying packaged, modular, and quick to install. At the top end, its membrane systems deliver Class A reuse-quality water suited to the most sensitive sites.
Behind every project, our local delivery team is backed by the engineering depth of True Water (Kubota's distributor across Australia and the Pacific) and the manufacturing pedigree of Kubota, a name in water technology since 1890, with over 1.7 million commercial systems installed worldwide. True Water has delivered more than 2,000 turnkey wastewater solutions and its plants treat over five million litres of sewage every day, for clients spanning government, councils, defence, mining, tourism, and development.
The Kubota commercial range
Every system uses the same proven Kubota technology a robust biological process, lightweight fibre-reinforced construction with a 50-plus year engineered life, quiet and odourless operation, low running costs, internal buffer storage, and remote monitoring. They're grouped by the level of treatment they deliver, and all are modular, so you can stage capacity as a project grows.
MBBR Biological
(Kubota HC-Z and K-HC-R) High-quality biological treatment using Kubota's Moving Bed Biofilm Reactor process. It's the workhorse of the range. The compact HC-Z suits smaller commercial loads from around 5,000 litres a day; the K-HC-R scales up for medium-to-large applications, with extra modules added as demand grows. Handles shock loads and peak flows well.
Best for: service stations, cafés and restaurants, lodges and venues, holiday parks, aged care, subdivisions, community projects
Indicative scale: from ~5 m³/day, modular to large
MBBR Biological: Nutrient Reduction
(Kubota K-HC-T) The same robust process with high-level nutrient removal added, for sites with strict discharge limits. This is the system of choice where a conventional plant won't meet a regulator's environmental conditions — while staying quiet, odourless, and easy to maintain.
Best for: environmentally sensitive sites, nutrient-limited catchments, coastal and waterway-adjacent projects
Indicative scale: medium to large, modular
MBR Membrane
(Kubota KM-SG-NP / Submerged Membrane Unit) Kubota's most advanced treatment: a Membrane BioReactor producing the highest treated-water quality with nutrient removal — clean enough for reuse and the most sensitive applications. It uses the same membrane technology found in the world's largest centralised treatment plants.
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Best for: water reuse and irrigation, premium developments, the most sensitive or constrained sites
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Indicative scale: medium to large, modular to 1 ML/day
Effluent dispersal & land application
Treatment is only half the system. The treated water still has to go somewhere. We design the land application or dispersal area (drip irrigation, mounds, sub-surface) to suit your site, soil, and consent conditions.
Why it wins on a commercial project
Scalable from day one
Modular design means you size for today and add capacity as the project grows, controlling capital and avoiding over-build.
Smaller footprint
Installed below ground at around half the size of conventional systems, freeing up sellable or usable land, with a clean finish above ground.
Low whole-of-life cost
Less power, reduced maintenance, no complex moving parts to fail. Strong lifecycle economics versus the alternatives.
Built to last
A 50-plus year engineered life from fibre-reinforced construction; some Kubota plants installed decades ago still run today.
Compliance security
High effluent quality, internal buffer storage and gravity flow that keep operating through power interruptions, remote monitoring, and scheduled servicing all working to keep you within consent.
Quiet, odourless, sealed
Near-silent and well-sealed against smells and pests, which matters on hospitality, tourism, and residential-adjacent sites.
Sectors we serve
Wineries and cellar doors · lodges, hotels and tourism venues · restaurants and hospitality · holiday parks, campgrounds and RV parks · service stations and truck stops · aged care and retirement villages · schools and early learning · aquatic and leisure facilities · subdivisions and cluster developments · marae and papakāinga · and larger infrastructure projects delivered with our network.
Proven around the world
Kubota systems delivered by our partners True Water across Australia and the Pacific show the same technology working across exactly the kinds of sites we specialise in: