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Septic systems

Properties unable to connect to the sewage system require a septic system to remove, contain and/or treat waste.

New or Alterations to Septic System

Applications and approval are required to install or alter a septic system. Download and return either the Application to Install (DOCX, 327KB) or the Application to Alter (DOCX, 340KB) a Septic System which contain the details of lodgement, costs, approvals to install/alter and use.

If you need to make changes to your application after approval, you need to apply for public health assessment and approval of those changes. Fees may apply. Minor changes such as change of plumber or minor adjustments, will need to be put  in writing with new plans. Major changes will require a new application to install or alter a septic system form.

Assessment of application and inspections are included in application fee.

New owners need to re-apply if septic system installation not completed at time of purchase.

Other Requests

Download and return the relevant request form for:

Fees are outlined in the request forms.
Please note: Properties with Building orders that were affected by storm damage in October 2016 do not need to pay a fee when requesting Septic Plans.

Septic Maintenance

If your home has a septic system it is your responsibility to make sure it is well-maintained and works effectively. A well maintained system will safeguard your family's health, protect the environment and neighbouring properties. Make sure:

  • You know the location and performance of your septic system
  • Your septic tank is cleaned at least every three years
  • Regularly check treatment plant services, sand filter and effluent disposal system
  • Effluent disposal area is protected from livestock and vehicles
  • Fats, high nutrient detergents and sanitary products do not enter the system
  • Water saving devices and water conservation measures are used where possible
  • If selling your property, that the new owners are provided with septic details

Decommissioning Septic Tanks

If replacing an old system with new or connecting to reticulated sewer, the septic tanks must be removed from the ground and back filled or decommissioned. Any works must be done by a licensed plumbing practitioner. The plumber will ensure pipes are permanently sealed, disinfected and filled properly and you will need to send a copy of decommissioning certificate to us.

Septic tank discharges

We have over 22,000 properties that rely on a septic tank system to treat household wastewater. Systems installed up to the early 1980’s were allowed to discharge untreated grey water off-site into storm water drains. Systems installed in the 80’s and 90’s were allowed to discharge treated wastewater off-site.

If you have a query about septic tank discharges contact our Health Services Department on 1300 368 333

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