The WPL Diamond DMC range of package sewage treatment plants is specifically designed for properties not connected to mains drainage in a range of sizes for population equivalents from 21-55 persons.
Unlike other plants, the Diamond’s unique design has no internal moving parts and therefore requires minimal annual maintenance and has low running costs.
The WPL Diamond uses a treatment process which does not require any chemicals and is also kind to the environment. Together with minimal visual impact due to a completely below-ground tank, it’s the ideal solution for off-mains drain
The continuous bacterial digestion treats the wastewater to a standard which meets normal Environment Agency consents and this treatment process can achieve a desludge (emptying) period of up to 3 years, much longer than other plants available.
The Diamond is CE marked, fully type tested and certificated in accordance with the mandatory European standard BS EN12566- 3, and meets all current legislation under the Environmental Permitting Programme.
The Diamond is fully compliant with UK Building Regulations and Environment Agency recommendations.

• CE Marked in accordance with EN12566-3
Fully accredited and certificated for total peace of mind, a copy is available on our website www.wpl.co.uk

• Fantastic value for money
Low running costs with a small, quiet air blower

• No internal moving parts
Simple design for reliable operation and minimal maintenance

• Up to 3 year de-sludge intervals
Due to the efficiency of the continuous bacterial digestion process (the DMC range generally requires annual de-sludging)

• No odours
The treatment process does not require primary settlement of raw sewage, where odours occur

• Excellent performance guaranteed
Meets normal Environment Agency consent standards

• Up to 5 Years Warranty
Comprehensive parts and labour warranty for air blower/plant
(All guarantees are subject to regular maintenance)
Diamond DMS plants 5 years, Diamond DMC plants 2 years
Tanks life expectancy is 25 years

• Low visual impact
Small lid, flush with the ground

• Easy installation
Design minimises labour & materials

• Robust construction
Reduces the need for concrete backfill where ground conditions permit

• Compact design
Reduced excavation and handling costs

• Designed in accordance with British Water
Using their Code of Practice Flows and Loads, to ensure the correct size tank

Process Performance Guaranteed
The Diamond is proven to treat the wastewater to a standard of 20mg/l Biological Oxygen Demand (BOD), 30mg/l Suspended Solids (SS) and 20mg Ammoniacal Nitrogen (AMM-N) on a 95 percentile basis.
If more stringent environmental requirements are specified, please contact WPL for details of how to meet those demands on 0845 450 4818.
WPL can provide information on soakaways by contacting the sales team on 0845 450 4818. WPL advises customers to use an experienced and qualified installer to assess their site conditions for a soakaway, or whether a water course or ditch can be used.

Model Range & Flow Rates

* As with all blowers actual power consumption will vary, and be dependent on the motor efficiency and nature of the installation
** For DMC7, DMC8 and DMC9 models using 3 Phase electrics, blower rated at 0.9 kw

Techical Data and Dimensions

* Deeper inverts can be accomodated with our standard invert extensions; contact WPL for further information.

Click here for higher treatment specification 

WPL also provides a data sheet to assist you with soakaway construction.

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