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05 01 10 Sludges from on-site effluent treatment other than those mentioned in 05 01 09

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

Not hazardous Mirror entry (non-hazardous side)

Official description: “sludges from on-site effluent treatment other than those mentioned in 05 01 09”

Where it sits: chapter 05 (wastes from petroleum refining, natural gas purification and pyrolytic treatment of coal), section 05 01 (wastes from petroleum refining).

What the hazard status means

This is one half of a “mirror” pair. You can only use this non-hazardous code once you have assessed the waste and shown it does not contain hazardous substances above the thresholds and has no hazardous properties. If you are not sure, it must be treated as hazardous.

Its mirror entry

05 01 09* Sludges from on-site effluent treatment containing hazardous substances Hazardous

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 05 01

05 01 02* Desalter sludges Hazardous
05 01 03* Tank bottom sludges Hazardous
05 01 04* Acid alkyl sludges Hazardous
05 01 05* Oil spills Hazardous
05 01 06* Oily sludges from maintenance operations of the plant or equipment Hazardous
05 01 07* Acid tars Hazardous
05 01 08* Other tars Hazardous
05 01 09* Sludges from on-site effluent treatment containing hazardous substances Hazardous
05 01 11* Wastes from cleaning of fuels with bases Hazardous
05 01 12* Oil containing acids Hazardous
05 01 13 Boiler feedwater sludges Not hazardous
05 01 14 Wastes from cooling columns Not hazardous
05 01 15* Spent filter clays Hazardous
05 01 16 Sulphur-containing wastes from petroleum desulphurisation Not hazardous
05 01 17 Bitumen Not hazardous
05 01 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.