Laboratories and certifiers

ZDHC guidelines help minimise the discharge of hazardous chemicals throughout the textile, apparel, leather, and footwear value chains. 

Brands frequently require proof of conformance to the ZDHC Manufacturing Restricted Substances List (ZDHC MRSL) before committing their production to a specific supplier facility. 

Laboratories and certifiers accepted by ZDHC play a critical role in validating conformance to relevant ZDHC guidelines.

ZDHC MRSL conformance

ZDHC MRSL Conformance Indicators

The ZDHC Manufacturing Restricted Substances List (ZDHC MRSL) limits harmful chemicals in formulations for manufacturing textile, apparel, leather, and footwear products. 

Certifiers who have passed the due diligence process of ZDHC become ZDHC MRSL Conformance Indicators and are in effect approved as able to provide certificates as an indication of conformance to the ZDHC MRSL. 

Wastewater testing

ZDHC Wastewater Testing Laboratories

To analyse the discharge from supplier facilities, laboratories test wastewater and sludge against the ZDHC Wastewater Guidelines.

Laboratories are accepted by ZDHC based on criteria including staff experience, equipment and processes in place to analyse wastewater and sludge samples. 

To ensure consistent data quality, ZDHC Accepted Laboratories submit test report data into the ZDHC Gateway Wastewater Module on behalf of the supplier.

Benefits

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Labs

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Certifiers

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ZDHC Accepted Laboratories and Certifiers 

Over 100 laboratories and certifiers have been accepted by ZDHC.
View the up-to-date list here. 
ZDHC Accepted CertifiersZDHC Accepted Laboratories 

Become a ZDHC Accepted Laboratory or Certifier

We guide laboratories and certifiers through the process of due diligence: the ZDHC Laboratory and Certifier Management Platform offers an easy way to manage the acceptance process.
Read on to check helpful information and tutorial on how to apply and establish your acceptance certification.
Become a ZDHC Accepted Conformance Indicator

Register your laboratory or certification organisation on the ZDHC Laboratory and Certifier Management Platform and complete the ‘ZDHC MRSL’ application under the ‘applications’ tab. 

You can find more information on the requirements for acceptance in the ZDHC MRSL Conformance Guidance.

ZDHC MRSL Conformance Guidance

This document outlines the requirements for indicating ZDHC MRSL conformance.

Download
Become a ZDHC Accepted Wastewater Testing Laboratory

Register your wastewater laboratory on the ZDHC Laboratory and Certifier Management Platform and complete the 'ZDHC Wastewater' application under the ‘applications’ tab. 

You can find more information on the requirements for acceptance in the ZDHC Wastewater Sampling and Analysis Plan, and the ZDHC Wastewater Guidelines.

Wastewater and Sludge Laboratory Sampling and Analysis Plan (SAP)

This document guides labs on ‘how to sample and test’ to determine the concentration of parameters in wastewater and sludge.

Download
Wastewater Guidelines

These Guidelines standardise wastewater testing requirements in the global apparel, textile and footwear supply chain.

Download
Become a ZDHC Accepted Wastewater MMCF Testing Laboratory

Did you apply to become a ZDHC Wastewater Laboratory?  

It is important to note that only ZDHC Accepted Wastewater Testing Laboratories can apply for acceptance to test against the ZDHC MMCF Guidelines.

Refer to section “2. ZDHC Wastewater Testing Laboratory” in the “ZDHC Wastewater” application to learn more about the acceptance criteria. 

Once you have completed your application for ZDHC Wastewater Testing Laboratory, you are ready for the next step. 

Log in to the ZDHC Laboratory and Certifier Management Platform and complete the 'ZDHC Wastewater MMCF' application under the ‘applications’ tab. 

You can find more information on the requirements for acceptance in the ZDHC MMCF Guidelines. 

ZDHC MMCF Industry Standard Implementation Approach

This support document underlines the steps and actions necessary to implement the ZDHC MMCF Guidelines and support the involved stakeholders during the implementation.

Download
Become a ZDHC Accepted Leather Wastewater Testing Laboratory

Did you apply to become a ZDHC Accepted Wastewater Testing Laboratory? 

It is important to note that only ZDHC Accepted Wastewater Testing Laboratories can apply for acceptance to test against the ZDHC Leather Wastewater Guidelines Addendum. 

Read section "2. ZDHC Wastewater Testing Laboratory" in the “ZDHC Wastewater” application to learn about the acceptance criteria. 

Once you have completed your ZDHC Wastewater Testing Laboratory application, you are ready for the next step. 

Log in to the ZDHC Laboratory and Certifier Management Platform and complete the 'ZDHC Wastewater Leather' application under the 'applications' tab. 

You can find more information on the requirements for acceptance in the ZDHC Leather Wastewater Guidelines Addendum.

Leather Wastewater Guidelines Addendum

These Guidelines set a single unified expectation for sampling, testing and reporting of industrial wastewater and sludge resulting from leather processing.

Download

Tutorials

The ZDHC Laboratory and Certifier Management Platform offers an easy way to manage the assessment process.

Join us now

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Labs and certifiers

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You are ready to apply!
Become one of the ZDHC Accepted Laboratories or Certifiers who are able to test and certify against ZDHC MRSL, ZDHC Wastewater Guidelines, the ZDHC Leather Wastewater Guidelines Addendum  and the ZDHC MMCF Guidelines. 
Apply here