WSA TN 10 was originally published on 29 October 2021. The intent of the document was to allow lead free copper alloys to be utilised in products whilst maintaining product certification. There have been some developments in relation to the specification of copper alloys in water industry products since then which has prompted a revision to WSA TN 10.

WSA TN 10 Version 2 was revised and re-issued in February 2023.  The amendments were to necessary to widen the scope for acceptable copper alloys, based on performance criteria.

WSA TN 10 Version 3 has been revised to align with ABCB’s WaterMark Certification Scheme Notice of Direction 2022/1.1 published in May 2023, recognising the revised 3-year transition period commencing on 1 May 2023. 

The document is intended to offer guidance to Conformity Assessment Bodies (CAB’s) until the relevant product Standards can be amended.

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