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WPL Diamond DMS3 Sewage Treatment Plant 5-11 Person

A UK manufactured system with a separate kiosk

WPL Neck Extension
WPL Neck Extension

SKU: DMS3 Categories: , ,


This 11 person Diamond DMS3 sewage treatment plant from WPL has a compact design.  Through a process of aeration and sedimentation the plant treats the wastewater so that it can be discharged into a stream or watercourse.

It is a cost effective and eco-friendly solution to dispose of your wastewater. It has a separate kiosk to house the compressor which can be installed above or below ground dependent on-site conditions.

Key benefits:

  • Up to 3 years de-sludge intervals
  • Compact design, minimal excavation
  • Installed in ‘wet’ or ‘dry’ ground conditions
  • Flushest lid to the ground
  • No moving parts within the tank
  • Alarm beacon included
  • CE mark, EN12566-3 approval
  • Effluent standard; as a minimum: 20mg/l BOD; 30mg/l SS; 20mg/l NH3
  • Load tested and water tight

This kit price includes as standard:

  • A tank
  • A pedestrian cover
  • A kiosk with compressor/blower
  • An alarm beacon
  • 10m air hose


2 years warranty on technology (compressor and parts, housed externally)

25 years warranty on the tank

Options available:

External pumped outlet in a separate chamber

Neck Extension – 460mm turret

Further documentation can be found under the ‘Product Downloads’ tab.

Delivery includes off-loading to the nearest hard standing.  Additional charges may apply for delivery to Scotland.

The Septic Tank Store also offers an Installation Service for domestic properties, cafes, equestrian yards, camping and glamping sites, and many other solutions. Take a look at our reviews.

Additional information

Capacity - Litres

3028 L

In ground depth mm


Outside diameter mm


Height to Inlet mm


Inlet Depth mm


Height to Outlet mm


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