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  1. Stichting ZDHC Foundation Help Centre
  2. Gateway
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  4. Wastewater Module
Knowledge base
What is a ZDHC ClearStream report?

A globally-accepted, easy-to-read wastewater test report. It helps Suppliers to demonstrate their wastewater performance, according to the ZDHC Wastewater Guidelines.

How can I view my wastewater test report?

The wastewater report can be viewed under the WATERDATA tab in the left navigation bar of the ZDHC Gateway. Click here for more information.

How can I view my previous wastewater data?

All previous wastewater data is also accessible in the WATERDATA tab on the ZDHC Gateway. The overview lists all ZDHC ClearStream reports and wastewater test reports.

How can I get a ZDHC ClearStream report?

You can get a ZDHC ClearStream report by having your facility’s wastewater tested against an applicable ZDHC Wastewater Guideline. This testing can be done by one of our Accepted Laboratories. A list of our Accepted Laboratories can be found here.

How can I share my ZDHC ClearStream reports with Brand clients?

Once you have accepted the wastewater test report that has been uploaded by one of the Accepted Laboratories, you can publish the results in the form of a ZDHC ClearStream report. This makes the test report and ClearStream report accessible to all Brands that you are connected with. Click here to learn more about building connections with Brands.

How can I get my wastewater tested?

ZDHC has entrusted several Accepted Laboratories worldwide with the testing against the ZDHC Wastewater Guidelines. These Laboratories conduct testing and submit data on behalf of Suppliers to the ZDHC Gateway. The resulting reports of your wastewater performance can be published on the platform.
A list of our Accepted Laboratories can be found here.

Who should test the wastewater for me?

The wastewater testing should only be conducted by one of the ZDHC Accredited Wastewater Laboratories.

How often should I test my wastewater?

The wastewater should be tested at intervals of three months twice a year. Please refer to the Wastewater Guidelines V2.0 to learn more about the test cycle. The guidelines can be found here.

Can I publish a ClearStream report on the ZDHC Gateway, if I only have partially tested parameters assigned to my specific facility profile?

Via a questionnaire that is presented to the Accepted Laboratory with questions about the Supplier’s facility, the ZDHC Gateway assigns which parameters should be tested and reported on. If a Laboratory has not tested and reported on all assigned parameters, the test results will remain with a status of “Incomplete”. These results will still be shared with Brands through the Test Report data extract, however, no ClearStream will be generated.

What happens if the Accepted Laboratory has made a mistake and needs to retest a parameter, so the Supplier can publish the ClearStream report onto the Gateway?

Laboratories have the ability to use the EDR file to edit and amend already uploaded test results. Using the “Action” column of the EDR file, they can upload new and amended results.

What happens if a Laboratory fills out the questionnaire incorrectly and not based on the Supplier specific profile?

The Laboratory should work in partnership with you as the facility to ensure that all answers provided as part of the Custom EDR builder are correct. In the event the Laboratory provides an answer that is not reflective of your Facilities’ operations or set-up, this may have an impact on which parameters are necessary to test against. The critical factors that determine this are the discharge type and daily average wastewater generated. For MMCF there is an additional factor which is the material type. For more information about how these factors influence which parameters to test, please refer to the ZDHC Wastewater Guidelines.

How can I share my wastewater test results with the Brands I am working together with?

Please follow the steps outlined in this article to publish your wastewater test results and the ZDHC ClearStream report on the ZDHC Gateway, thus making the data available to all Brands that you are connected with.

What to do if my wastewater test results are non-conformant?

If your ClearStream report shows parameters that do not meet the requirements of the applicable ZDHC Wastewater Guideline, it is recommended to perform corrective actions with a Corrective Action Plan. Suppliers should work with the contracted wastewater test laboratory together to create a process for managing actual and potential non-conformity or non-compliance. The process should take remedial and preventive actions to eliminate the causes of non-conformance. A template can be found here.

How are the High-Level Scores calculated on the ClearStream Report?

Please refer to Appendix B on the ClearStream report for a detailed breakdown of the scoring logic used for the high-level scores.

Am I able to decline the results the Laboratory has uploaded?

Yes. Once results are uploaded, they are placed into Pending status, ready for review. Using the Review Result action, the ClearStream report can be viewed and the result can be either accepted or rejected. If rejected the Laboratory is notified and the results are then assigned a Declined status.

How do I know which parameters are applicable to me?

The critical factors that determine this are the discharge type and daily average wastewater generated. For MMCF there is an additional factor which is the material type. For more information about how these factors influence which parameters to test, please refer to the ZDHC Wastewater Guidelines.

What are the costs associated with the ZDHC ClearStream report?

The Wastewater Reporting Fee is 250€ per year and is active for 12 months from the date of the payment. Throughout the active subscription, more wastewater test reports can be uploaded and it is recommended to at least twice a year in April and October, as outlined in the ZDHC Wastewater Guidelines.

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Related articles
  • How can I understand my ClearStream report? (Suppliers)
  • Managing wastewater test results (Suppliers)
  • Publishing a test report (Suppliers)
  • Uploading a Corrective Action Plan (Suppliers)
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