Earn Rewards on Every Order - Unlock Your Discounts Now!

Free UK Mainland Delivery On This Product | Lead Times Vary

Over 17,000+ Happy Customers

WPL Diamond DMS2 Sewage Treatment Plant (up to 6 people) | WPL-DMS2

£2,234.00
Was £3,308.84 (inc VAT)
£2,680.80 (inc VAT)
£2,234.00 (exc VAT)
£2,757.37

FREE UK 
DELIVERY

CUSTOMER OFFLOADING

BELOW
GROUND

SEWAGE
WATER

Quantity

Secure Payment - Multiple Payment Gateways

Product Description

This product is delivered directly from the supplier, lead times vary.

 

The compact WPL Diamond DMS2 has the flexibility to be configured to meet for various population sizes. The WPL Diamond  DMS2 is suitable for a single house with up to 4 bedrooms. The unit can be installed in ‘wet’ or ‘dry’ ground conditions and discharged safely to soakaways or watercourses.

The standard package includes a WPL Diamond tank, WPL kiosk, alarm beacon, blower (housed in a kiosk) and 10 metres air hose.

If your property is not connected to mains sewerage, your wastewater can be treated by our discreet below ground WPL Diamond DMS package wastewater treatment range.

This is a small and compact wastewater treatment plant designed for properties that house 1 person or up to 20 (people) occupancy equivalent; ideal for new builds and replacement of existing septic tank systems and package sewage treatment plants. No need for chemicals, allowing final effluent to be safely discharged to a soakaway or watercourse.Our WPL Diamond is better designed for modern day living than a septic tank system; with a faster process and a more environmentally friendly end result, it is the ideal replacement solution. Homeowners with septic tanks that discharge directly into the surface water will now need to consider the option 
of replacing with a packaged wastewater treatment plant, by (or before) the 1st January 2020. when selling a property or upgrading an ‘end of life’ septic tank.
Unlike the traditional septic tanks, the modern packaged wastewater (sewage) treatment plants such as a WPL Diamond
are designed with an aerated process for todays’ increased volume of water usage in everyday life.

 

Features and Benefits of the WPL Diamond DMS2

  • CE mark, EN12566-3 approval
  • Effluent standard; as a minimum: 20mg/l BOD; 30mg/l SS; 20mg/l NH3
  • Load tested and water tight
  • Part H2 UK building regs compliant
  • LABC registered
  • Meets General Binding rules
  • Designed using British Water Code of practice flows & Loads
  • Compact design, minimal excavation
  • Installed in ‘wet’ or ‘dry’ ground conditions
  • Flushest lid to the ground
  • No moving parts within the tank
  • Up to 3 years de-sludge intervals
  • No odour
  • Alarm beacon included
  • Original WPL Diamond, patent granted
  • Robust design, UK manufacture
  • 460mm Extension Turret available for deeper installations
  • Separate Pump Chamber available for sites where a gravity discharge cannot be achieved

 

WPL Range Brochure

WPL Diamond DMS 2 Technical Drawing

WPL Diamond DMS 2 Installation Guide

WPL Diamond DMS 2 Operation and Maintenance Manual

WPL Diamond Installation Guide

 Commissioning and Servicing Information

SKU: TANTREAWPL001

Why Buy Your Tank from Direct Drainage?

Free Tank Delivery

Tanks ship direct from the manufacturer, with lead times varying by product.

Best Price Guarantee 

Found the same tank cheaper? Send us the quote and we’ll try to match it.

Authorised Supplier

Buy with confidence from a sewage and drainage specialist.

Expert Tank Support

Need help choosing the right tank? Call our team on 01388 537050.

You May Also Like

CUSTOMER REVIEWS

Rated 4.8/5 by Direct Drainage Customers

Based on over 600 verified reviews

VERIFIED REVIEW

Very helpful from the start to the finish

Items were despatched quickly and arrived the next day. Would recommend.

Title

North Hayne Farm Cottages | 26 June 2026

VERIFIED REVIEW

Cheapest price I could find for the pump

Cheapest price I could find for the pump and delivery the next day what more could you want.

Title

Sam Jukes | 5 November 2025

VERIFIED REVIEW

Great service!

I ordered a septic tank it was delivered within a week and the delivery driver left it in the exact right place and time. Would definitely use this company again, thanks so much.

Title

Eve Harland | December 2025

OFFICIAL SUPPLIERS OF:

FAQs

From choosing the right treatment plant to installation, maintenance and UK regulations, we've answered some of the most common questions to help you find the right solution for your property.

What is the difference between a septic tank and a sewage treatment plant?

A septic tank separates solids from wastewater before allowing the liquid to drain into a suitable drainage field. A sewage treatment plant goes a step further, using biological processes to treat wastewater to a higher standard before discharge. Sewage treatment plants are often the preferred choice where improved treatment performance is required.

What size sewage treatment plant do I need?

The correct size depends on the number of people your property is designed to accommodate, the expected wastewater flow and the type of property. Sewage treatment plants are commonly rated by Population Equivalent (PE). It's important to select a system with sufficient capacity to handle your property's requirements. Our team can help you choose a suitable system.

Do sewage treatment plants need electricity?

Most sewage treatment plants require electricity to operate components such as air blowers, pumps or control systems. However, power consumption varies depending on the manufacturer and model. Some systems use low-energy technology to help minimise running costs. Always check the individual product specifications before purchasing.

How often does a sewage treatment plant need emptying?

Sewage treatment plants require periodic desludging to remove accumulated solids. This is commonly carried out at least once a year, although the frequency depends on the system, usage and manufacturer's recommendations. Regular servicing and maintenance are also essential to maintain performance and help prevent costly breakdowns.

Do you supply replacement parts for sewage treatment plants?

Yes! At Direct Drainage, we supply a wide range of sewage treatment plant spare parts, including air blowers, diaphragms, filters and other essential components. Whether you're carrying out routine maintenance or replacing a faulty part, our team can help you identify a suitable replacement for your system.

Do you stock all tanks and sewage treatment systems?

We do not stock tanks and treatment systems as standard. These are supplied directly from the manufacturer. The lead times of these systems will vary. If you need an accurate delivery date, please contact us on 01388 537050.

Are your prices inclusive of VAT?

It is important to note that all prices listed on our website exclude VAT. VAT will be calculated at checkout.