ZDHC Wastewater Guidelines V2.1 Update and Release of its Supporting Documents

Since 01 November 2022, the ZDHC Wastewater Guidelines V1.1 have no longer been effective. Within the transition period for the updated version to come into effect, as announced in March 2022, ZDHC incorporated stakeholder feedback in this month’s update. ZDHC is pleased to announce that the updates to the ZDHC Wastewater Guidelines have now been reflected in its Version 2.1, published and effective as of today. We urge all of our stakeholders to study the ZDHC Wastewater Guidelines Industry Standard Implementation Approach V1.0 to understand how to implement the ZDHC Wastewater Guidelines V2.1. 

This update includes the release of the following documents: 

• ZDHC Wastewater Guidelines V2.1
• ZDHC ZDHC Wastewater and Sludge Laboratory Sampling and Analysis Plan V2.1
• ZDHC Gateway Electronic Data Reporting System Guidelines V3.0 
• ZDHC Wastewater Guidelines Industry Standard Implementation Approach V1.0

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Updated: ZDHC Wastewater Guidelines V2.1

We have updated ZDHC Wastewater Guidelines V2.1 to make certain parameters more clear. This update includes: 

• Table 1O PFCs  
• E.Coli - update in applicable units 
• Table 4B - Cyanide was listed in metals and now placed in Anions 
• Table 4D - Cyanide  leachate values are specified in this table

ZDHC strongly recommends its stakeholders to  study all the changes to better understand the potential implications for adoption in the testing, wastewater treatment operations, or supply chain implementation.

→ Click here to download the ZDHC Wastewater Guidelines V2.1

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Updated: ZDHC Wastewater Sampling and Analysis Plan V2.1

To assist the samplers and labs, we updated the ZDHC Wastewater Sampling and Analysis Plan V2.1 with the following points: 

• We clarified that single grab sampling in a homogenisation tank under certain conditions is considered equivalent to a composite sampling.  
• We adjusted content in standard test methods and requirements for wastewater and sludge. 
• We added a footnote in Table 6 related to the parameter for “Fecal Coliform”. 
• We specified  test report requirements. 
• We added Appendix D and E.

ZDHC strongly recommends its stakeholders to  study all the changes to better understand the potential implications for adoption in sampling and testing. 

→ Click here to download the ZDHC Wastewater Sampling and Analysis Plan V2.1

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Release: ZDHC Gateway Electronic Data Reporting System Guidelines V3.0

We have aligned ZDHC Gateway Electronic Data Reporting Systems Guidelines V3.0 with ZDHC Wastewater Guidelines V2.1 to provide the latest ZDHC ClearStream reports with detailed analysis. ZDHC Gateway Electronic Data Reporting System Guidelines V3.0 will help to explain the fields that are present in the EDR and clarify all the data required by ZDHC Approved Wastewater Laboratories to upload wastewater test data on the ZDHC Gateway. 

→ Click here to download the ZDHC Gateway Electronic Data Reporting System Guidelines V3.0

Release: ZDHC Wastewater Guidelines Industry Standard Implementation Approach V1.0

This update also includes the publication of the ZDHC Wastewater Guidelines Industry Standard Implementation Approach Version 1.0, detailing how the industry stakeholders should implement the updated ZDHC Wastewater Guidelines V2.1 across their value chains. 

PLEASE NOTE:

• Wastewater testing results and respective ZDHC ClearStream reports and data from previous versions of the ZDHC Wastewater Guidelines will remain available on the ZDHC Gateway
• All wastewater testing that has already been conducted according to the Wastewater Guidelines V2.0 (e.g. in November) will remain valid for the running April 2023 testing cycle.
• From November 2022, sampling, testing and reporting according to the ZDHC Wastewater Guidelines V1.1 and associated documents will no longer be accepted.

→ Click here to download the ZDHC Wastewater Guidelines Industry Standard Implementation Approach V1.0

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