Enviro EPS

A simple low-cost solution –

one single unit removes the full spectrum of pollutants

Cost reductions are generated by:

  • One unit removes the full spectrum of pollutants as defined in the CSIRO Best-Practice Environmental Management Guidelines 1999
  • No pit inserts or secondary units required
  • Simple in-line installation, fitted into drainage system
  • One installation location
  • One service location

The Enviro EPS is third generation technology supported by controlled testing and field monitoring.




Growing environmental awareness has led governments and legislators to set new water quality standards and promote Water Sensitive Urban Design (WSUD). One of the aims of such initiatives is to encourage the removal of pollutants and other contaminants such as hydrocarbons and sediments from stormwater.

The Enviro EPS provides a fully compliant, simple, low-cost way of achieving this. In contrast to the conventional approach of multiple devices and pit inserts, the Enviro EPS centralises  capture and retention of the full range of contaminants within a single unit. Typically one Enviro EPS unit is sufficient to service catchment areas up to 20,000 sq m.

Not only is the Enviro EPS easier and more straight forward to install, it takes up only a small footprint which means it can be conveniently positioned for ease of access and servicing.


The Enviro EPS is an inline unit that incorporates multiple processes and chambers within one prefabricated enclosure. Our units are available to suit pipe sizes ranging from 225 to 1050 mm.

As stormwater enters the unit, sediments are separated and deposited in one chamber while hydrocarbons, larger trash and litter are forced into another. The device’s unique tumbling action serves the dual purpose of transporting the materials, while at the same time continuously cleaning the internal screens, thereby preventing clogging.

Servicing is recommended every 6-12 months to remove the captured contaminants and we offer a service agreement option with each Enviro EPS unit.


Due to the wide variety in catchments, contaminants and water conditions, there are no universally accepted methods to measure the performance of Stormwater Quality Improvement Devices.

Design and testing of the Enviro EPS has therefore been based on recommendations in the Australian Run-Off Quality Guideline 2006 (ARQ) as well as recommendations from eWater, and in accordance with Water Sensitive Urban Design (WSUD) principles.

The unit’s processes have been tested via:

  • field monitoring
  • scaled model testing at University of Sydney
  • mathematical modelling and predictive analysis
  • University field data gathering and research
  • peer review by University of Western Sydney
  • full scale testing at Manly Hydraulics Laboratory

Enviro EPS | Compliance and Testing


Stormwater Australia, as the national advocacy body have recently issued a draft protocol for the field testing and monitoring of devices that fall under the classification of Stormwater Quality Improvement Devices (SQID’s).

In accordance with the high standard of compliance, Enviro Australis have engaged independent industry experts to implement the draft protocol entitled Stormwater Quality Improvement Device Evaluation Protocol (SQIDEP). This is aimed at augmenting field monitoring and testing already conducted.

Enviro EPS | Field Testing and Monitoring

Enviro EPS | Stormwater Quality Improvement Device | SQID

Enviro EPS | How it Works

Enviro EPS | Compliance & Testing

Enviro EPS | Field Testing and Monitoring

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