Wastewater management

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Recycled water

If you are a company or organisation that supplies recycled water in the Northern Territory (NT), you must meet certain public health and environmental regulations.

Read the code of practice for water recycling.

Code of practice for water recycling PDF (1.1 MB)
Code of practice for water recycling DOCX (778.2 KB)

You should also read the administrative procedures.

Administrative procedures for water recycling PDF (244.9 KB)
Administrative procedures for water recycling DOCX (659.4 KB)

How recycled water is used

Recycled water can be used for different purposes such as irrigating:

  • parks
  • sports fields
  • crops.

Types of recycled water schemes

Recycled water use is categorised into two schemes, depending on the level of exposure to the public:

  • low exposure
  • high exposure.

Low-exposure recycled water schemes

Common low-exposure uses of recycled water include:

  • irrigation of:
    • public open spaces (such as playing fields and parks)
    • pasture and fodder crops
    • heavily processed food crops
    • non-food crops
  • dust suppression on mining or construction sites.

To help you meet your water quality requirements for low-exposure use, you can use the spreadsheets below.

High-exposure recycled water schemes

High exposure recycled water schemes include supplying recycled water to:

  • increase a supply of drinking water via a source supply (eg. a dam)
  • support a development by way of a dual reticulation system
  • irrigate minimally processed food crops.

For help and guidance, get the information sheets and templates below.

If you want to supply recycled water for low exposure use, you must notify the Department of Health.

To notify the department, follow these steps:

Step 1. Get a hydraulic consultant to fill in a notification for low-exposure recycled water scheme DOCX (61.4 KB).

Step 2. Attach any supporting information.

Step 3. You must sign the form.

Step 4. Pay the fee to the Receiver of Territory Monies.

Step 5. Email your form with the receipt of payment to wastewater@ntg.gov.au.

If you want to supply recycled water for high exposure use, you must get approval from the Department of Health.

To apply for approval, follow these steps:

Step 1. Get a hydraulic consultant to fill in an application for approval for high-exposure recycled water scheme DOCX (62.1 KB).

Step 2. Attach your supporting information including the following checklists:

Step 3. You must sign the form.

Step 4. Pay the fee to the NTG Receiver of Territory Monies.

Step 5. Email your form with the receipt of payment to wastewater@ntg.gov.au.

Access spreadsheets, information sheets and templates.

Spreadsheets

Use the following spreadsheets to help you comply with water quality guidelines.

Calculation tool for class A recycled water - E. coli analysis XLSX (52.3 KB)

Calculation tool for class A+ recycled water - E. coli analysis XLSX (52.8 KB)

Calculation tool for class B recycled water - E. coli analysis XLSX (53.3 KB)

Calculation tool for class C recycled water - E. coli analysis XLSX (53.6 KB)

Calculation tool for class D recycled water - E. coli analysis XLSX (52.5 KB)

Information sheets

Get the following water recycling information sheets.

Calculating log reduction values (LRV) PDF (220.1 KB)

Indicators, reference pathogens and log reductions PDF (140.7 KB)

Critical control points (CCP)  PDF (162.5 KB)

End-user agreements PDF (122.3 KB)

Getting chlorination right PDF (203.3 KB)

Non-treatment barriers: end-use and on-site controls PDF (107.4 KB)

Public health incident - notification and response PDF (98.0 KB)

Benefits of risk-based prevention versus end-point testing PDF (112.7 KB)

Types of monitoring PDF (156.9 KB)

Validation and verification PDF (219.6 KB)

Templates

Use the following water recycling templates.

Model recycled water end-user agreement DOCX (641.9 KB)

Critical control point template DOCX (55.5 KB)

Recycled water management system template DOCX (183.7 KB)

Contact

For more information, email wastewater@ntg.gov.au.

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