EWC code 10 12 13: sludge from on-site effluent treatment
EWC code 10 12 13 covers sludge from on-site effluent treatment. It sits in chapter 10, thermal process wastes .
Non-hazardous waste code
This is a non-hazardous waste code, so it can be recorded on a standard waste transfer note.
Where this waste comes from
Typically arises from thermal, incineration, power station and smelting.
Other codes in this group
Codes that share group 10 12 with 10 12 13.
- 10 12 01 waste preparation mixture before thermal processing
- 10 12 03 particulates and dust
- 10 12 05 sludges and filter cakes from gas treatment
- 10 12 06 discarded moulds
- 10 12 08 waste ceramics, bricks, tiles and construction products (after thermal processing)
- 10 12 09 solid wastes from gas treatment containing hazardous substances Hazardous
- 10 12 10 solid wastes from gas treatment other than those mentioned in 10 12 09
- 10 12 11 wastes from glazing containing heavy metals Hazardous
How it is recorded
The waste transfer note records the waste by its EWC code, along with the quantity, the time and place of transfer and the details of both parties. The EWC code lookup tool confirms a code before it goes on a note, and the guide to EWC codes on waste transfer notes explains how the codes are chosen.
From October 2026, permitted receiving sites in England and Wales record every load on DEFRA's Digital Waste Tracking Service, with Scotland and Northern Ireland following in January 2027. The EWC code is part of that submission.
Recording this code on every load
LoadLog checks EWC codes as a load is recorded, then submits the record to DEFRA's Digital Waste Tracking Service. Compliance Lite is free until the end of 2026 for sign-ups before October.
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