In areas where reticulated sewer is not available, all household wastewater must be treated and contained within the boundaries of the property. This is done through the use of on-site domestic wastewater systems including septic tanks and secondary treatment systems.
Council must issue a permit before the installation or alteration of a wastewater system. Your plumber may provide you with general information regarding the wastewater treatment system suitable for your property however if you require specific details regarding on-site wastewater treatment options and installation requirements refer to the Environmental Protection Authority (EPA) website.
Council will only issue a Permit to Install for EPA approved wastewater systems.
The following is an outline of the on-site wastewater application and installation process:
Once a planning permit has been granted and prior to works commencing on the building, a Permit to Install must be obtained from the Environmental Health Unit. This must be obtained prior to any installation or alteration to a wastewater system. It is illegal to install a wastewater system without Council approval.
Initial inspection and assessment of the property will be conducted by Council's Environmental Health Officer (EHO) to assess the suitability of the proposed installation. This is a time whereby owners and plumbers can liaise with an EHO prior to installation and discuss any queries, options or issues that may arise. In some cases you may be required to provide additional information regarding the site and/or the proposed system for installation. Small lot sizes, steep slopes, flood prone areas or areas known to have poor draining soils, nearby surface water, shallow depth to bedrock or a high water table, may require a Land Capability Assessment as part of the planning process. If the EHO is then satisfied that the proposed system and area are adequate, a 'Permit to Install' will be issued. The "Permit to Install" should be attached to your Building permit application documents.
The installation of the septic system must be carried out by a registered plumber. Prior to back filling when installation is nearing completion, a second inspection by an EHO will need to be arranged to ensure the system has been installed in accordance with the Environment Protection Authority (EPA) Septic Tanks Code of Practice and the relevant conditions on the Permit to Install.
If the EHO is satisfied that the system has been installed correctly, an Approval to Use will be issued which will highlight any conditions of use and maintenance requirements that must be followed to ensure correct functioning of the system. A Certificate of Occupancy will not be issued for the property, by the relevant Building Surveyor, unless an Approval to Use for the wastewater system has been granted. Maintenance is required for your septic tank or a secondary treatment system to continue to operate in a safe and environmentally friendly manner.
It is your responsibility to manage the wastewater from your septic system and/or treatment plant.