- Easily transported without lifting equipment
- Great for temporary or permanent use
- Simple to connect multiple to increase capacity
The Mini Tuff Tank 725 litre Above Ground Sewage Tank is a compact, low-profile effluent holding tank built to collect and store sewage, wastewater, and greywater from welfare units, site cabins, catering trailers, and other temporary structures.
Built from UV-stabilised, corrosion-resistant polyethylene, this plastic waste tank is tough, lightweight, and completely sealed to prevent leaks and stop contamination. With a 725-litre capacity and weighing only 40kg when empty, it’s easy to move and install without lifting equipment – perfect for sites with limited space or frequent relocations.
The tank includes 2 x 2” ports as standard, plus optional 5” access hatches positioned to suit your setup for waste inlet or extraction. Tanks can be linked side-by-side or end-to-end using optional connection kits to create larger above-ground sewage storage systems.
Designed for the construction, events, hire, and sanitation industries, the Mini Tuff Tank provides a reliable, reusable alternative to underground septic systems – requiring no excavation, concrete base or permanent installation.
Compatible Accessories
Upgrade your Mini Tuff Tank with these practical accessories to improve hygiene, safety and usability:
Breather Kit & Odour Trap – Maintains airflow and prevents gas build-up, keeping your effluent tank vented, odour-free, and compliant with site hygiene standards.
Elsan Tipping Point – A clean, designated station for safely emptying chemical toilets or Elsan waste directly into the tank, which reduces spill risk.
WC Connector Kit – Provides a sealed connection between welfare cabin toilets and the tank inlet.
Wireless Waste Level Alarm (High Level) – This monitor wirelessly tracks tank levels and issues a visual and audible alert before capacity is reached, preventing costly overflows and emergency call-outs.
Tank Linking Kit – Increase your site's versatility and capacity by connecting multiple tanks together.
FAQs
Q: What’s the difference between a sewage tank and a septic tank?
A: A sewage tank (effluent holding tank) stores waste water temporarily until it’s emptied by a tanker, whereas a septic tank treats and discharges it. The Mini Tuff Tank is a sealed, above-ground effluent holding tank — ideal where no drainage or treatment system is available.
Q: Can multiple tanks be connected together?
A: Yes — the Mini Tuff Tank can be linked nose-to-tail or side-by-side to increase capacity for large sites or extended hire setups.
Q: Is this suitable as a waste water tank for welfare units?
A: Absolutely. It’s designed for portable sanitation and welfare cabin applications, compliant with UK HSE welfare guidance.
Q: Can this tank also store clean water?
A: Yes, it’s suitable for non-potable water storage, such as rainwater harvesting or supplying cleaning equipment.
Q: How is the tank emptied?
A: Simply connect a vacuum tanker or extraction hose to one of the 5” access ports, or decant through a pump if used as a holding tank.
