Name: WATER double-chamber drainage treatment plant
Brand: Marseplast
SKU: 4231
Availability: InStock

The WATER³ septic tank is a high-quality unit designed for the preliminary treatment of wastewater in small treatment plants or domestic installations.
It is manufactured by Marseplast using the rotational moulding (rotomoulding) method from durable polyethylene (PE), ensuring a monolithic, seamless structure with no joints — which guarantees full tightness and long service life.

Inside the tank, two key processes take place: sedimentation (heavier particles settling at the bottom) and flotation (lighter particles rising to the surface). As a result, the wastewater is pre-treated — sludge remains inside the tank, and the clarified liquid flows further to the secondary treatment system or drainage field.

💧 Applications

Facilities without access to a sewage network or with a limited gravity sewer system
Domestic installations: single-family houses, holiday cottages
Farms, utility buildings — anywhere initial wastewater treatment is required before discharge
Works with a drainage field, infiltration tunnel, or as part of a larger wastewater treatment system

⚙️ Advantages and Structural Features

Monolithic PE body – no welds or joints, ensuring maximum tightness
Rotomoulding technology – uniform structure, lightweight, corrosion-resistant, and mechanically durable
Resistant to biological and chemical factors present in wastewater
Available in two-chamber versions (smaller capacities) and single-chamber versions (larger capacities) — allowing adaptation to the number of users
Pre-made inlet and outlet connectors, ready for installation
Low weight for easy transport and assembly
Long service life — a long-term solution when properly maintained

📊 Technical Specifications

Model	Intended use (PE)	Flow rate [m³/d]	Total height [mm]	Width [mm]	Length [mm]	Chamber type
WATER³ 2.0 (≈2000 L)	~4 people	0.6	~1570	~870	~2410	Two-chamber
WATER³ 3.0 (≈3000 L)	~6 people	0.9	~1570	~1210	~2700	Two-chamber
WATER³ 4.0 (≈4000 L)	~9 people	1.35	~1860	~1500	~2400	Single-chamber
WATER³ 5.0 (≈5000 L)	~11 people	1.65	~2220	~1500	~2400	Single-chamber

Material: Polyethylene (PE) – manufactured using the rotomoulding method.
Standards and certificates: Products comply with relevant standards (e.g., PN-EN) and have manufacturer approvals.

Features:

Underground tanks
Black
two-chamber
RLM from 4-6 persons
no electronics or electrical components
gravity flow
ribbed settling tank made of polyethylene
simple operation
Sludge is exported from the treatment plant once or twice a year

Number of inhabitants [pe]	11, 4, 6, 9
Polyethylene cover	2 pcs.
Distribution pit	1 pcs.
Closing manhole	3 szt.
Seepage drainage	48 mb, 60 mb
Aeration mushroom	3 pcs.
Geotextile, width 0.5 m	48 mb, 60 mb
Elbow Ø 110 90 degrees	2 pcs.
Full pipe 0.5 m	3 szt.
Assembly and operation book	1 pcs.
Dimensions (L x H x W)	2410x1570x870, 2700x1570x1210
Waga	100 kg, 120 kg
Type	Drenażowa
Capacity	2000 l, 3000 l, 4000 l, 5000 l