[Australian waste code finder](https://complyonsite.com/tools/waste-code-finder-australia)

# N205 national waste code Sludge & ash left after treating or disposing of industrial waste.

> N205 national waste code. Residues from industrial waste treatment & disposal operations. A national reporting category for treatment plant waste.
> Web page: https://complyonsite.com/tools/waste-code-finder-australia?code=national-n205

- Free, no account
- DCCEEW hazardous-waste data and reporting standard 2025
- Nothing is stored

## Is National N205 hazardous waste?

**Not from the code alone.** N205 is a DCCEEW reporting category that groups waste data nationally. It doesn't make every material with this description hazardous. State and territory rules decide the classification, exclusions and movement duties for a real load.

Enter N205 in the national waste-data category field when reporting under that standard. It isn't a transport certificate. A movement needs the code and record accepted where it starts, plus any required destination consignment authorisation for an interstate controlled load. Apply [separate interstate movement controls](https://complyonsite.com/tools/waste-code-finder-australia), because a reporting code gives no state movement classification.

## What does National N205 cover?

Residues from treating or disposing of industrial waste go here. National examples are scrubber sludge, ion-exchange residues, treatment sludge, pollution-control residue, digestate, bottom ash and char. What links them is the treatment or disposal operation they came from.

- **Official wording**: Residues from industrial waste treatment/disposal operations
- **Reporting group**: Soil/sludge
- **Description edition**: 2025
- **Rule or list**: [Australian hazardous waste data and reporting standard, 2025 edition](https://www.dcceew.gov.au/sites/default/files/documents/australian-hazardous-waste-data-reporting-standard-2025.pdf)

## Is waste-treatment residue National N205 or another code?

| Code | When it fits |
| --- | --- |
| N205 | The residue came from an industrial waste treatment or disposal operation. |

These examples show the national category only. A state may use a different code, threshold or facility permission, so use that state's list before preparing transport paperwork.

## Which wastes take National N205?

| Waste | When it’s N205 |
| --- | --- |
| Waste treatment residues | The residue comes from treating or disposing of waste. |

## Which codes sit beside National N205?

| Code | What it is |
| --- | --- |
| [N140](https://complyonsite.com/tools/waste-code-finder-australia?code=national-n140) | Fire debris and washwater |
| [N150](https://complyonsite.com/tools/waste-code-finder-australia?code=national-n150) | Fly ash |
| [N160](https://complyonsite.com/tools/waste-code-finder-australia?code=national-n160) | Fixed, solidified or encapsulated waste |
| [N190](https://complyonsite.com/tools/waste-code-finder-australia?code=national-n190) | Filter cake with listed-waste residue |
| [N220](https://complyonsite.com/tools/waste-code-finder-australia?code=national-n220) | Asbestos waste |
| [N230](https://complyonsite.com/tools/waste-code-finder-australia?code=national-n230) | Asbestos-like ceramic fibres |
| [R100](https://complyonsite.com/tools/waste-code-finder-australia?code=national-r100) | Clinical and related waste |
| [R120](https://complyonsite.com/tools/waste-code-finder-australia?code=national-r120) | Discarded medicines and pharmaceuticals |

### Sources

- [Australian hazardous waste data and reporting standard, 2025 edition](https://www.dcceew.gov.au/sites/default/files/documents/australian-hazardous-waste-data-reporting-standard-2025.pdf)
- [National Environment Protection (Movement of Controlled Waste between States and Territories) Measure 1998, compilation F2012C00858](https://www.legislation.gov.au/F2007B01119/latest)