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  1. Stichting ZDHC Foundation Help Centre
  2. Roadmap To Zero Programme Guidelines
  3. ...
  4. Suppliers Roadmap to zero
  5. Output
  6. Wastewater and sludge
  7. Implementation
Knowledge base

During the transition period, all stakeholders are expected to update their respective policy statements (e.g. chemical management policy) and communicate this to their internal and external stakeholders by referencing the ZDHC Wastewater and Sludge Guidelines (with the current version number) to set clear expectations.

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  • What is the new update in terms of wastewater and sludge sampling from the previous version of the ZDHC Wastewater Guidelines?
  • How many wastewater testing cycles are to be completed per year?
  • Where can I find a ZDHC Approved Wastewater Laboratory to test my wastewater?
  • Will all brands and retailers accept wastewater test reports that are carried out in accordance with the ZDHC Wastewater and Sludge Guidelines?
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  • What happens if a supplier does not agree to do the testing?
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