3500 Litre Underground Water Tank Black

The 3500 Litre Underground Water Tank – Black is a robust, high-capacity storage solution designed for both domestic and commercial applications. Manufactured from industrial-strength MDPE, this underground tank offers exceptional durability and long-term performance, making it ideal for rainwater harvesting, general water storage and even chemical containment. Its versatile design allows multiple inlet and outlet size options—from 8mm up to 110mm—giving you the flexibility to configure your system to suit a wide range of installation requirements.
With built-in lifting lugs for easy handling and a compact shape suitable for installing under decking or in restricted spaces, this tank is perfect when above-ground storage is not an option. Multiple tanks can also be connected using up to 4" outlets, making it a practical solution for larger storage projects where space is limited.

Technical Specification

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• Capacity: 3500 litres
• Height: 1250mm
• Diameter: 2150mm
• Weight: 120kg
• Material: MDPE (Medium Density Polyethylene)
• Outlet: 4"
• Access: 450mm
• Construction: One-piece, rotationally moulded for strength and durability
• Installation: Underground, compatible with 4" (110mm) drainage pipe
• Applications: Domestic, commercial, industrial, chemical and rainwater harvesting systems