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07 04 13* Solid wastes containing hazardous substances

EWC / List of Waste code · Last checked 21 October 2026 · Applies across the UK (England, Wales, Scotland and Northern Ireland)

Hazardous Absolute hazardous entry

Official description: “solid wastes containing hazardous substances”

Where it sits: chapter 07 (wastes from organic chemical processes), section 07 04 (wastes from the MFSU of organic plant protection products (except 02 01 08 and 02 01 09), wood preserving agents (except 03 02) and other biocides).

What the hazard status means

Waste that matches this description is always hazardous waste, whatever the amount of hazardous substances in it. You do not need to test it to decide whether it is hazardous, but you still need to know its hazardous properties to fill in the paperwork.

Using this code

Write the code on the paperwork when waste is passed on: a waste transfer note for non-hazardous waste, or a consignment note for hazardous waste (called special waste in Scotland).
Choose the code from where the waste came from first (the chapter), then what it is. If a load is mixed, you may need more than one code.
The waste must go to a site whose permit allows that code. A registered carrier can tell you which codes they accept: check a waste carrier.
Businesses have a duty of care to describe their waste correctly.

Other codes in section 07 04

07 04 01* Aqueous washing liquids and mother liquors Hazardous
07 04 03* Organic halogenated solvents, washing liquids and mother liquors Hazardous
07 04 04* Other organic solvents, washing liquids and mother liquors Hazardous
07 04 07* Halogenated still bottoms and reaction residues Hazardous
07 04 08* Other still bottoms and reaction residues Hazardous
07 04 09* Halogenated filter cakes and spent absorbents Hazardous
07 04 10* Other filter cakes and spent absorbents Hazardous
07 04 11* Sludges from on-site effluent treatment containing hazardous substances Hazardous
07 04 12 Sludges from on-site effluent treatment other than those mentioned in 07 04 11 Not hazardous
07 04 99 Wastes not otherwise specified Not hazardous

This page explains the code in plain English. It is not a classification of your waste. The official List of Waste and the classification guidance decide which code applies, and you are responsible for the code you use.

07 04 13* Solid wastes containing hazardous substances

What the hazard status means

Using this code

Other codes in section 07 04

Official sources