Self-Sufficient Wastewater Treatment
Turn any property into a fully self-sufficient home. Unlike above-ground competitors, our NV-type biological plants are installed completely underground — the smarter choice for the Greek climate — cleaning domestic wastewater to 95%+ purity, quietly, odour-free, and certified for direct discharge into nature.
Why Our System Outperforms the Competition
Most providers rely on above-ground units. Ours is engineered to live underground — a difference you feel every day.
Fully Underground Design
Competitors install their systems above ground. Ours is buried completely out of sight, shielded from summer heat and temperature swings, and leaves your garden free — the ideal solution for the Greek climate.
Toilet Paper — No Problem
Use ordinary toilet paper without a second thought. The biological process breaks it down naturally, so there is no separate bin, no clogging and no compromise on everyday comfort.
Government Subsidies Available
For larger installations, the Greek state offers subsidy programmes that can substantially reduce your investment. We help you check eligibility and handle the paperwork.
The Cleanest Way Off the Grid
Whether you live in a tiny house in Halkidiki, a rural villa or a remote plot with no municipal sewer, you still deserve clean, modern sanitation. Our NV-type plants use proven biological technology: microorganisms break down wastewater inside a buried glass-fibre tank, producing clear water that meets EU discharge standards. No reinforced concrete pit. No septic odours. No expensive monthly servicing.
Why Homeowners Choose This System
Designed for comfort, the environment and your wallet.
High Treatment Level
BOD removal up to 94%, suspended solids up to 95%, total nitrogen and phosphorus removal — exceeds EN 12566-3 requirements.
No Offensive Odours
Aerobic biological treatment eliminates the rotten-egg smell typical of septic tanks. Safe to install right next to your house.
Minimal Mounting Costs
Glass-reinforced plastic tank — no reinforced concrete pit required. Installation in a single day, often without heavy machinery.
Low Running Costs
Only 76–183 W of electricity. Sludge removal needed only once every 1–3 years (vs. 4–6× per year for a septic tank).
Remote Telemetry (RDTS)
Optional data transfer system monitors the blower, sludge level and water flow — alerts you on your phone if anything is wrong.
CE Certified Manufacturing
CE marked, ISO 9001 and ISO 14001 certified manufacturing. More than 16,000 households across Europe already trust this system.
Mount Anywhere
Three depth versions (up to 1,200 mm inlet). Can be installed under a driveway, lawn, or even with high groundwater using an anchor plate.
Discharge Directly to Nature
Treated water can flow into a soakaway, infiltration manhole, mound system, or open watercourse — depending on your site.
How the System Works
Four biological stages turn raw wastewater into clean, dischargeable water.
1 · Wastewater Inflow
Domestic wastewater from sinks, showers and toilets flows by gravity into the aeration chamber of the buried tank.
2 · Biological Aeration
A quiet air blower pushes oxygen through a diffuser. Naturally occurring microorganisms metabolise organic pollutants — they literally "eat" the waste.
3 · Secondary Settling
The treated water moves into a separate settling chamber. Activated sludge sinks to the bottom by gravity; clear water rises to the top.
4 · Clean Water Discharge
Clear, treated water — 95%+ free of pollutants — overflows into your chosen discharge: an infiltration field, soakaway, or open water body.
Pick the Right Size for Your Home
Four models cover everything from a small holiday home to a 19-person property.
| Model | Residents | Daily capacity | Blower power | Tank weight |
|---|---|---|---|---|
| NV-1 | 4 | 0.8 m³/day | 76 W | 188 kg |
| NV-2 | 8 | 1.44 m³/day | 114 W | 289 kg |
| NV-3 | 14 | 2.52 m³/day | 141 W | 578 kg |
| NV-4 | 19 | 3.42 m³/day | 183 W | 1000 kg |
Three Smart Ways to Manage Sludge
Pick the method that fits your lifestyle and budget.
Vacuum Truck Pumping
Classic method — surplus sludge is pumped out by a standard sewage tanker. Simplest and lowest upfront cost.
Dewatering Bags
Surplus sludge is air-lifted into bags on top of the plant. When 2/3 full, the bag is replaced — no special truck needed.
Sludge Thickener
A separate thickening unit means you only need to remove sludge once every 3–5 years. The lowest long-term running cost.
Three Ways to Discharge Treated Water
We engineer the right solution for your soil and water table.
Open Water Body
Treated water flows directly into a stream, pond or drainage channel — ideal when there is a water body nearby.
Infiltration Manhole
A perforated underground manhole returns water gently back into the ground through filtering layers.
Mound Infiltration
For sites with high groundwater — a raised infiltration mound spreads treated water across a larger area.
Built on European Excellence
- Installed across Europe
- 16,000+ households
- Certification
- CE · EN 12566-3 · ISO 9001 · ISO 14001
- Standard
- 89/106/EEC compliant
Make Your Home Truly Self-Sufficient
Tell us about your property — number of residents, soil type, distance to water bodies — and we will design and install the right NV-type system for you, with a fixed all-inclusive price.