Apply for wastewater works design approval

You need to get wastewater works design approval before constructing certain types of wastewater systems. These include:

  • on-site systems (excluding those for single residential buildings)
  • community wastewater management systems
  • waste stabilisation ponds
  • recycling and reuse systems
  • third party irrigation
  • composting and hybrid toilets.

An application can only be made by the person who has responsibility for the property that the wastewater system will be installed on.

The applicant needs to engage a certified engineer (hydraulic) or plumber and drainer (design) to prepare the application. These consultants must have experience in designing wastewater systems.

How to apply

To apply for wastewater works design approval follow the below steps.

Step 1: read the guidelines

Read the guidelines for wastewater works design approval.

Guidelines for wastewater works design approval applications (725.7 kb)

Guidelines for wastewater works design approval applications (82.9 kb)

Step 2: fill in the form

Fill in the wastewater works design approval application.

Wastewater works design approval application (867.0 kb)

Wastewater works design approval application (78.7 kb)

Step 3: attach supporting documents

You will need to attach documents showing that the system will create minimal risk to public health or the environment.

These will vary depending on the type of system being installed and may include:

  • plans and drawings
  • technical specifications
  • laboratory analysis
  • certificates
  • statements.

Step 4: pay the fee

You will need to attach proof that you have paid the appropriate fee when you submit your application.

Find out more about wastewater fees, including how to pay.

Step 5: submit the application

The application can be emailed to envirohealth@nt.gov.au or submitted in person to the Darwin or Alice Springs Environmental Health offices.

The location of these offices can be found on the Department of Health website.

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Last updated: 09 August 2018