ZDHC has opened an industry consultation on plans to make chemical management the foundation of textile circularity, with a Lisbon summit next month set to decide how far the scheme can stretch across recycling supply chains.

The move matters for a specific tier: mills, tanneries and recyclers handling post-industrial textile and leather waste. ZDHC's initial focus will sit there, where manufacturing controls and chemical information are more accessible than for discarded consumer goods.

What is ZDHC actually proposing?

ZDHC (Zero Discharge of Hazardous Chemicals) runs the industry's most widely adopted chemical management roadmap, so when it folds circularity into its remit, the effects flow straight into supplier conformance guidance.

The Lisbon convening next month will examine three pressure points:

• recycling barriers across post-industrial waste streams
• feedstock safety, meaning whether incoming waste carries hazardous chemistry
• how much chemical information suppliers can realistically share downstream

That third item is the hard one. Recyclers can't certify output safety if they don't know what went into the input, and the data trail on factory floor waste is thin even where controls exist.

Why start with post-industrial waste?

The logic is practical. In-mill cuttings, off-spec rolls and leather trimmings never leave controlled environments, so the chemical disclosure gap is narrower than for post-consumer garments. A recycler taking selvage from a known mill has a shot at tracing inputs; one shredding mixed wardrobes does not.

What does this change for sourcing teams?

Suppliers already reporting against ZDHC's Manufacturing Restricted Substances List (MRSL) should expect circularity-linked disclosure requirements to build on that reporting rather than sit beside it. Buyers pairing recycled-content targets with chemical compliance will increasingly need both verified through the same chain.

The consultation is open now. Compliance leads at mills and recyclers handling post-industrial waste have the narrowest window and the most to gain from shaping the feedstock-safety rules before they harden.