At least 5000 On-Site Sewage Management ('OSSM') systems exist across the Shire. These are systems that process household waste-water and dispose of the treated effluent at the property.
There are two main types of On-Site Sewage Management systems:
Septic Tanks - A septic tank is a water-proof tank usually located in-ground and provides treatment of sewage by anaerobic (in the absence of air) bacterial digestion of the solids. The solids primarily accumulate at the bottom of the tank, while the partly treated liquid flows from the septic tank to a soil absorption system.
Aerated Wastewater Treatment Systems ('AWTS') - These systems use aeration of waste-water as an integral part of the treatment process. An AWTS differs from the septic tank in that the effluent is further treated (secondary treatment) through an aerobic biological process and disinfection, with the effluent finally being applied to land, typically through irrigation.
Application to Operate a System of Sewage Management (PDF, 191kB) (use this form to seek an 'Approval to Operate' licence for an existing on-site sewage management system)
Search for 'Approval to Operate' - On-Site Sewage Management System (PDF, 248kB) (use this form to request a copy of your Approval to Operate licence or check on your approval status. Please note that licences last for 2, 3 or 5 years.)
(use this form to change operator details if you are a new owner of a property with a current licensed on-site sewage management system. This form is to be lodged with Council within 3 months after property settlement. The operator of an on-site sewage system is usually the landowner, however may be a managing agent or caretaker, for example. Please note that an Approval to Operate licence is an agreement between the current operator and Council, and therefore a current operator must be nominated for the licence to remain valid.)
Fact Sheet - On-Site Wastewater Assessment (PDF, 240kB)
Buying or Selling a Property with a Septic Tank (PDF, 99kB)
Managing Aerated Wastewater Treatment Systems (PDF, 572kB)
Environment & Health Protection Guidelines - On site Sewage Management for Single Households (external link)