Production processes in the textile, apparel, leather and footwear industries often use large quantities of both chemicals and water. If the output (e.g. discharged wastewater and sludge) is not properly treated, the resulting effluent can present a threat to people and the environment.

The Output Focus Area supports and verifies the work of the Input and Process Focus Areas. It incorporates the development and ongoing maintenance of the ZDHC Wastewater Guidelines and related implementation tools, which are the ZDHC Gateway - Wastewater Module and ZDHC ClearStream reports.

ZDHC Provisional Laboratory Acceptance Process

In order to support the implementation of the ZDHC Wastewater Guidelines in the value chain and to ensure a consistent level of quality for the wastewater and sludge test data submitted in the ZDHC Wastewater - Gateway Module, ZDHC provides a provisional laboratory acceptance process.

If you are interested in becoming one of the ZDHC accepted labs (provisional) please submit your application through completing the online form below. Pick the one suitable to your case. 

Any questions please contact

Download the current list of ZDHC Provisionally Accepted Labs here

ZDHC Wastewater Guidelines

Together with leading brands, suppliers, academia, testing laboratories, technology providers, and other stakeholders, we created the most comprehensive and unified guidelines for wet processing facilities. The ZDHC Wastewater Guidelines define a single, unified standard for wastewater testing that goes beyond regulatory compliance and conventional wastewater testing parameters. These are the first Guidelines to define pass and fail criteria for hazardous chemicals covered in the ZDHC MRSL (ZDHC Manufacturing Restricted Substances List). The current version 1.0 was released in November 2016.

Download the ZDHC Wastewater Guidelines here.



ZDHC Wastewater Treatment Technologies Document

Wastewater treatment is a complex process, and ZDHC hopes that in combination with regional training programmes and other relevant references, this technical overview of wastewater treatment technologies will help the supply chain to close the knowledge gap and to meet the requirements of the ZDHC Wastewater Guidelines.

Download the ZDHC Wastewater Treatment Technologies Document here.

Related Documents & Tools

  • Wastewater Guidelines FAQ
  • Zero-Liquid Discharge (ZLD) Sampling Interim Guidance
  • Wastewater Laboratory Sampling and Analysis Plan (SAP)