Diamond DMS5 with Standard External Pumping Chamber (14-20 Occupants)

The Diamond DMS5 Domestic Sewage Treatment Plant is a cutting-edge, high-performance solution for homes and small commercial properties where mains drainage isn’t an option. Formerly known as the WPL Diamond, this treatment plant is designed for properties with 14 to 20 occupants, making it ideal for domestic homes, or B&Bs. With its compact and discreet design, featuring a flush-to-the-ground lid, the Diamond DMS seamlessly integrates into any landscape, ensuring minimal visual impact.

This advanced system goes beyond traditional septic tanks by offering a faster, environmentally friendly treatment process without the need for chemicals. The final effluent can be safely discharged into a drainage field or watercourse, allowing homeowners and business owners to benefit from an extended emptying cycle of up to three years between desludging, making it a low-maintenance, cost-effective option.

Included with this listing is a Standard External Pumping Chamber (EPC), which enhances the functionality of the Diamond DMS. This EPC features a red and amber beacon and serves as an additional sample chamber for convenient monitoring. The EPC is equipped with a variety of essential components, including a pump chamber, high-level float switch, submersible pump with integral float switch, non-return valve, isolation valve, and a 32mm MPDE pipe outlet fitting. It also includes an electrical junction box and installation handles, along with a red, flashing high-level alarm beacon.

Built to the highest standards and fully compliant with BS EN12566-3, the Diamond DMS is CE marked and meets all necessary General Binding Rules for small sewage treatment plants. Its durable construction from glass-reinforced plastic (GRP), complete with a UV-stabilised external gel coat finish, ensures reliability and longevity. With a generous 25-year tank warranty and two years for the blowers, you can trust that this system is engineered for performance.

Designed to adapt to varying ground conditions, whether wet or dry, the Diamond DMS also offers optional invert depth extensions (select from dropdown) for flexible discharge options on complex sites. Its compact design minimises excavation during installation, saving time and reducing disruption. This advanced treatment plant meets the growing water usage demands of modern life while providing a cleaner, odour-free, and environmentally conscious solution for wastewater management. Proudly made in the UK, the Diamond DMS5 with Standard External Pumping Chamber is a smart, sustainable investment for any property.

Benefits of the Diamond DMS5 with Standard External Pumping Chamber (14-20 Occupants):

• High-performance DMS for 14 to 20 occupants
• Includes EPC & essential components
• Durable GRP with UV stable gel coat finish
• Compact design with flush-to-the-ground lid
• Up to 3 years between desludging
• Suitable for wet or dry ground conditions
• Minimal excavation required
• BS compliant & CE marked

Product Specifications:

Population: 14-20

Max Outside Diameter (mm): 1990

Height to Inlet (mm): 2000

Inlet Invert Depth (mm): 780

Height to Outlet (mm): 1930

Max Height/In Ground Depth (mm): 2780

Weight Empty (kg): 210

Total Capacity (L): 3975

Factory Fitted Invert Extension: Select from dropdown

Please note: Please ensure all necessary permissions have been granted and due consideration has been given to:

• Planning permission, building regulations, and other regulating or interested parties.

• Sizing of the plant is in line with the British Water Flows and Loads codes of practice.

*25 years warranty and two years for the blowers is subject to correct installation, consistent influent conditions and regular plant maintenance as per the manufacturers’ instructions.