This reference index contains all 842 six-digit entries in the WM3 GB waste-classification reference. An asterisk identifies a hazardous entry. Mirror entries need the relevant hazardous-property assessment before the correct member of the pair can be selected. Code selection is based on the activity and process that produced the waste, not simply on words that happen to match a description.
Waste classification is separate from dangerous-goods transport classification and from a receiving facility’s acceptance checks. WM3 GB applies in England, Scotland and Wales; Northern Ireland uses its own WM3 version and regulatory arrangements.
Code descriptions are reproduced from WM3, with Crown copyright material used under the Open Government Licence v3.0.
Finding the correct List of Waste code
Search by waste description or six-digit code. Spaces and hyphens are accepted. Chapter and WM3 entry-type filters narrow the list, but code selection still depends on the activity and process that produced the waste.
- Waste origin: the business activity and process that produced the material.
- Composition: known substances, contaminants and representative analysis where available.
- Code information: the full six-digit entry and any hazardous asterisk shown in existing records.
- Waste movement: quantity, container type and the documentation required before collection.
Reference sources for the waste code library
These sources explain the WM3 classification framework, legal responsibilities for waste classification and general pollution-prevention duties. They are reference material only. The correct classification depends on the waste itself and the jurisdiction in which it is produced.
Waste code guides
Chapter 10
10 03 27* — wastes from cooling-water treatment containing oil
EWC / LoW 10 03 27*
This is the hazardous side of a WM3 mirror entry. The source and official description must fit, and the relevant hazardous-property assessment is needed to decide between the mirror entries.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- This is the hazardous side of a mirror entry. The actual composition and assessment determine which entry applies.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 03 28 — wastes from cooling-water treatment other than those mentioned in 10 03 27
EWC / LoW 10 03 28
This is the non-hazardous side of a WM3 mirror entry. The source and official description must fit, with the relevant assessment supporting use of the non-hazardous entry.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- This is the non-hazardous side of a mirror entry. The actual composition and assessment determine which entry applies.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 03 29* — wastes from treatment of salt slags and black drosses containing hazardous substances
EWC / LoW 10 03 29*
This is the hazardous side of a WM3 mirror entry. The source and official description must fit, and the relevant hazardous-property assessment is needed to decide between the mirror entries.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- This is the hazardous side of a mirror entry. The actual composition and assessment determine which entry applies.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 03 30 — wastes from treatment of salt slags and black drosses other than those mentioned in 10 03 29
EWC / LoW 10 03 30
This is the non-hazardous side of a WM3 mirror entry. The source and official description must fit, with the relevant assessment supporting use of the non-hazardous entry.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- This is the non-hazardous side of a mirror entry. The actual composition and assessment determine which entry applies.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 03 99 — wastes not otherwise specified
EWC / LoW 10 03 99
This is a WM3 absolute non-hazardous entry. For waste that fits the official description and source activity, the non-hazardous status is fixed; waste from a different source or of a different type may require another code.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- WM3 identifies this as an absolute non-hazardous entry. Confirm that the waste fits this entry rather than another description.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 04 01* — slags from primary and secondary production
EWC / LoW 10 04 01*
This is a WM3 absolute hazardous entry. For waste that fits the official description and source activity, the hazardous status is fixed; waste from a different source or of a different type may require another code.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- WM3 identifies this as an absolute hazardous entry. Confirm the waste fits the description and source activity.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 04 02* — dross and skimmings from primary and secondary production
EWC / LoW 10 04 02*
This is a WM3 absolute hazardous entry. For waste that fits the official description and source activity, the hazardous status is fixed; waste from a different source or of a different type may require another code.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- WM3 identifies this as an absolute hazardous entry. Confirm the waste fits the description and source activity.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 04 03* — calcium arsenate
EWC / LoW 10 04 03*
This is a WM3 absolute hazardous entry. For waste that fits the official description and source activity, the hazardous status is fixed; waste from a different source or of a different type may require another code.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- WM3 identifies this as an absolute hazardous entry. Confirm the waste fits the description and source activity.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 04 04* — flue-gas dust
EWC / LoW 10 04 04*
This is a WM3 absolute hazardous entry. For waste that fits the official description and source activity, the hazardous status is fixed; waste from a different source or of a different type may require another code.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- WM3 identifies this as an absolute hazardous entry. Confirm the waste fits the description and source activity.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 04 05* — other particulates and dust
EWC / LoW 10 04 05*
This is a WM3 absolute hazardous entry. For waste that fits the official description and source activity, the hazardous status is fixed; waste from a different source or of a different type may require another code.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- WM3 identifies this as an absolute hazardous entry. Confirm the waste fits the description and source activity.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 04 06* — solid wastes from gas treatment
EWC / LoW 10 04 06*
This is a WM3 absolute hazardous entry. For waste that fits the official description and source activity, the hazardous status is fixed; waste from a different source or of a different type may require another code.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- WM3 identifies this as an absolute hazardous entry. Confirm the waste fits the description and source activity.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 04 07* — sludges and filter cakes from gas treatment
EWC / LoW 10 04 07*
This is a WM3 absolute hazardous entry. For waste that fits the official description and source activity, the hazardous status is fixed; waste from a different source or of a different type may require another code.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- WM3 identifies this as an absolute hazardous entry. Confirm the waste fits the description and source activity.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 04 09* — wastes from cooling-water treatment containing oil
EWC / LoW 10 04 09*
This is the hazardous side of a WM3 mirror entry. The source and official description must fit, and the relevant hazardous-property assessment is needed to decide between the mirror entries.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- This is the hazardous side of a mirror entry. The actual composition and assessment determine which entry applies.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 04 10 — wastes from cooling-water treatment other than those mentioned in 10 04 09
EWC / LoW 10 04 10
This is the non-hazardous side of a WM3 mirror entry. The source and official description must fit, with the relevant assessment supporting use of the non-hazardous entry.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- This is the non-hazardous side of a mirror entry. The actual composition and assessment determine which entry applies.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 04 99 — wastes not otherwise specified
EWC / LoW 10 04 99
This is a WM3 absolute non-hazardous entry. For waste that fits the official description and source activity, the non-hazardous status is fixed; waste from a different source or of a different type may require another code.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- WM3 identifies this as an absolute non-hazardous entry. Confirm that the waste fits this entry rather than another description.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 05 01 — slags from primary and secondary production
EWC / LoW 10 05 01
This is a WM3 absolute non-hazardous entry. For waste that fits the official description and source activity, the non-hazardous status is fixed; waste from a different source or of a different type may require another code.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- WM3 identifies this as an absolute non-hazardous entry. Confirm that the waste fits this entry rather than another description.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 05 03* — flue-gas dust
EWC / LoW 10 05 03*
This is a WM3 absolute hazardous entry. For waste that fits the official description and source activity, the hazardous status is fixed; waste from a different source or of a different type may require another code.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- WM3 identifies this as an absolute hazardous entry. Confirm the waste fits the description and source activity.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 05 04 — other particulates and dust
EWC / LoW 10 05 04
This is a WM3 absolute non-hazardous entry. For waste that fits the official description and source activity, the non-hazardous status is fixed; waste from a different source or of a different type may require another code.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- WM3 identifies this as an absolute non-hazardous entry. Confirm that the waste fits this entry rather than another description.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 05 05* — solid waste from gas treatment
EWC / LoW 10 05 05*
This is a WM3 absolute hazardous entry. For waste that fits the official description and source activity, the hazardous status is fixed; waste from a different source or of a different type may require another code.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- WM3 identifies this as an absolute hazardous entry. Confirm the waste fits the description and source activity.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 05 06* — sludges and filter cakes from gas treatment
EWC / LoW 10 05 06*
This is a WM3 absolute hazardous entry. For waste that fits the official description and source activity, the hazardous status is fixed; waste from a different source or of a different type may require another code.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- WM3 identifies this as an absolute hazardous entry. Confirm the waste fits the description and source activity.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 05 08* — wastes from cooling-water treatment containing oil
EWC / LoW 10 05 08*
This is the hazardous side of a WM3 mirror entry. The source and official description must fit, and the relevant hazardous-property assessment is needed to decide between the mirror entries.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- This is the hazardous side of a mirror entry. The actual composition and assessment determine which entry applies.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 05 09 — wastes from cooling-water treatment other than those mentioned in 10 05 08
EWC / LoW 10 05 09
This is the non-hazardous side of a WM3 mirror entry. The source and official description must fit, with the relevant assessment supporting use of the non-hazardous entry.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- This is the non-hazardous side of a mirror entry. The actual composition and assessment determine which entry applies.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 05 10* — dross and skimmings that are flammable or emit, upon contact with water, flammable gases in hazardous quantities
EWC / LoW 10 05 10*
This is the hazardous side of a WM3 mirror entry. The source and official description must fit, and the relevant hazardous-property assessment is needed to decide between the mirror entries.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- This is the hazardous side of a mirror entry. The actual composition and assessment determine which entry applies.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quoteChapter 10
10 05 11 — dross and skimmings other than those mentioned in 10 05 10
EWC / LoW 10 05 11
This is the non-hazardous side of a WM3 mirror entry. The source and official description must fit, with the relevant assessment supporting use of the non-hazardous entry.
Environment Agency: WM3 ↗WM3 reference information. A matching description alone does not establish the correct classification for a particular waste.
Waste classification notes
- This is the non-hazardous side of a mirror entry. The actual composition and assessment determine which entry applies.
- The correct List of Waste code depends on the activity and process that produced the waste and, where required, the evidence supporting its classification.
Environment Agency: WM3
Get a quote
