Effluent Tank – Above Ground

This 2,300-litre capacity above-ground effluent storage tank is designed for portable cabins, toilet blocks, welfare units etc. where mains effluent drainage is unavailable.

The ability to site these tanks underneath these structures means they are great space-savers and can be ‘hidden’ from sight. These tanks can be interlinked to achieve a higher capacity and make a great yet affordable alternative to steel effluent tanks.

We manufacture plastic effluent holding tanks by rotomoulding with UV-stabilised, seamless and corrosion-resistant polymer.

Our plastic effluent tank offers numerous advantages compared to steel tanks, including being cost-effective, lightweight for easy transportation across the same site or different locations, and maintenance-free without unsightly rust.

As well as a dedicated under-cabin effluent tank, these can also be interlinked to achieve a higher capacity where needed and are ideal for larger toilet blocks on constructed sites and other sites not connected to the main sewers.

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effluent tank
1 Year Warranty

Effluent Tank – Above Ground Specifications

  • Capacity (Ltrs) 2300
  • Length (mm) 3100
  • Width (mm) 2460
  • Height (mm) 450


  • 2 x 5″ inspection lids (wastewater entry point)
  • 1 x 12″ inspection lids (wastewater removal point)
  • 1 x 18″ inspection lid (wastewater removal point)
  • 4 x tank handles
  • 2 x Forsheda seals
  • Convenient lifting eyes
  • Internal bracing

key benefits

A septic unit designed to fit under portable cabins where mains effluent / wastewater drainage on site is not available. This tank fits perfectly underneath cabins of all descriptions. They are an excellent temporary effluent waste storage device. Wastewater tanks can be sited underneath toilet blocks, kitchens, canteens and welfare units. Tanks are space-saving and can ideally be stored on end.

  • Easily linkable to allow the creation of larger capacity tanks
  • Lightweight meaning it can be positioned manually without the need for specialist lifting and positioning equipment
  • Durable tank without the need for maintenance or  drawback of rust
  • Extremely weather resistant
  • Easily cleaned with a jet-wash
  • Short lead times


Effluent Tank Linking Kit Spec: 2 x 138mm – 110mm Forsheda Seal 2 x 110mm Drain Plug

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