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WPL Diamond DMS4 Sewage Treatment Plant 10-15 Person

A UK manufactured system with a separate kiosk

WPL Neck Extension
WPL Neck Extension

SKU: DMS4 Categories: , ,


This 15 person Diamond DMS4 sewage treatment plant from WPL is UK manufactured with 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.

Additional information

Capacity - Litres

3974 L

In ground depth mm


Outside diameter mm


Height to Inlet mm


Inlet Depth mm


Height to Outlet mm


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