Small tank, big results!
Backed by 25 years tank warranty
If your property is not connected to mains sewerage, your wastewater can be treated by our discreet below ground Diamond DMS ((formerly known as the 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 drainage field or watercourse.
Our 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.
Key features
*subject to correct installation, consistent influent conditions and regular plant maintenance as per the manufacturers’ instructions.
Easy on the eye and the landscape
Our Diamond DMS is entirely underground, boasting the flushest lid on the market and ensuring minimal visual impact to your beautiful garden or surrounding landscape.
The Diamond Process
Our Diamond has the advantage of a high quality process for wastewater treatment; in a compact single tank which is easy to install and maintain.

Ideal septic tank replacement
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,
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 Diamond
are designed with an aerated process for todays’ increased volume of water usage in everyday life.