Environmentally this rapid flow infiltration is potentially catastrophic. Stormwater infiltration into sewers potentially leads to failure of sewer infrastructure resulting in sewerage overflowing through manholes onto the ground and flowing into creeks, rivers, lakes and out to sea. 
The photo on the left clearly illustrates the problem with the ORG below the path allowing rain to flow down the path and straight into the ORG grate. Stormwater infiltration into sewers potentially leads to failure of sewer infrastructure resulting in sewerage overflowing through manholes onto the ground and flowing into creeks, rivers, lakes and out to sea. With storms, rapid flow infiltration into sewers peaks quickly with an estimated 40% of all stormwater infiltration into sewers originating from non-compliant house overflow relief gullies or ORG’s.
Overflow Relief Cap
Protect Your Sewer System with the ORC Overflow Relief Cap - Stopping Stormwater Infiltration, Guaranteed!
Prevent Rapid Flow Infiltration with ORC Overflow Relief Cap - Stops Stormwater in its Tracks
Overflowing stormwater and overland ground flow during storms or long rainfall events have always been a problem in Australia.
This is due to ground flow water flowing into the sewer drains through illegal or non-compliant house overflow relief gullies or ORG’s. This water flow is termed rapid flow infiltration.
The solution for councils, water authorities, plumbers and individual households is the simple installation of an ORC anti infiltration Overflow Relief Cap.
The photo on the right illustrates how the simple installation of an ORC has allowed rain to still flow down the path without it infiltrating the sewer drain.
- 40% reduction of rapid flow infiltration of rainwater into sewers from house ORG’s
- reduction in sewer surcharge overflows during storms
- reduced capital expenditure for councils and water authorities on sewer storage capacity
- reduced capital expenditure on sewer pumping capacity
- reduction in capital expenditure on sewerage treatment
Easy to install and maintain, the ORC is suitable for use in both new and existing sewer systems. Its design ensures that it remains reliable and efficient, making it a valuable addition to any sewer system.
Overall, the ORC overflow relief cap offers an essential solution for managing stormwater infiltration in sewer systems and protecting them from potential issues.
Plumbing Standards
- the ORC anti-infiltration overflow relief device is manufactured in Australia to meet the Australian Standards WMTS 501-2016 and holds WaterMark Licence 60136
- the ORC is compliant with AS/NZS 3500.2-2021 for use in any plumbing installation in Australia
Aquatemp stock ORC Overflow Relief Caps and ship Australia wide. For product enquiries or orders, contact Aquatemp or buy Overflow Relief Caps online now in our online shop for fast delivery.
To download our ORC brochure and installation instructions click here
